/* ==========================================================================
   INVOICEPRO - Professional Invoicing & Billing Software
   Design System & Styles
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */

:root {
    /* Brand Colors - Ocean Blue Professional */
    --color-primary-50: #f0f9ff;
    --color-primary-100: #e0f2fe;
    --color-primary-200: #bae6fd;
    --color-primary-300: #7dd3fc;
    --color-primary-400: #38bdf8;
    --color-primary-500: #0284c7;
    --color-primary-600: #0369a1;
    --color-primary-700: #075985;
    --color-primary-800: #0c4a6e;
    --color-primary-900: #082f49;

    /* Secondary - Success Green (for payments) */
    --color-success-50: #f0fdf4;
    --color-success-100: #dcfce7;
    --color-success-200: #bbf7d0;
    --color-success-300: #86efac;
    --color-success-400: #4ade80;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-700: #15803d;

    /* Warning - Pending Orange */
    --color-warning-50: #fffbeb;
    --color-warning-100: #fef3c7;
    --color-warning-200: #fde68a;
    --color-warning-300: #fcd34d;
    --color-warning-400: #fbbf24;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;

    /* Error - Overdue Red */
    --color-error-50: #fef2f2;
    --color-error-100: #fee2e2;
    --color-error-200: #fecaca;
    --color-error-300: #fca5a5;
    --color-error-400: #f87171;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;

    /* Neutral - Professional Gray */
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e1;
    --color-neutral-400: #94a3b8;
    --color-neutral-500: #64748b;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    --color-neutral-950: #020617;

    /* Typography Scale - Clamp-based Responsive */
    --text-xs: clamp(0.625rem, 0.5rem + 0.25vw, 0.75rem);
    --text-sm: clamp(0.75rem, 0.625rem + 0.25vw, 0.875rem);
    --text-base: clamp(0.875rem, 0.75rem + 0.25vw, 1rem);
    --text-lg: clamp(1rem, 0.875rem + 0.25vw, 1.125rem);
    --text-xl: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --text-2xl: clamp(1.25rem, 1rem + 0.75vw, 1.5rem);
    --text-3xl: clamp(1.5rem, 1.125rem + 1vw, 1.875rem);
    --text-4xl: clamp(1.875rem, 1.25rem + 1.5vw, 2.25rem);
    --text-5xl: clamp(2.25rem, 1.5rem + 2vw, 3rem);
    --text-6xl: clamp(2.75rem, 1.75rem + 2.5vw, 3.75rem);
    --text-7xl: clamp(3.25rem, 2rem + 3vw, 4.5rem);
    --text-hero: clamp(3rem, 2rem + 4vw, 5rem);

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Letter Spacing */
    --tracking-tighter: -0.05em;
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;

    /* Spacing Scale - 8px Base Unit */
    --space-0: 0;
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */
    --space-40: 10rem;    /* 160px */
    --space-48: 12rem;    /* 192px */

    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* Box Shadows - Professional */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);

    /* Glow Effects */
    --glow-primary: 0 0 40px rgba(2, 132, 199, 0.3);
    --glow-success: 0 0 40px rgba(34, 197, 94, 0.3);
    --glow-warning: 0 0 40px rgba(245, 158, 11, 0.3);

    /* Invoice Shadow */
    --shadow-invoice: 0 4px 6px -1px rgb(0 0 0 / 0.1),
                      0 2px 4px -2px rgb(0 0 0 / 0.1),
                      0 20px 40px -10px rgb(0 0 0 / 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;

    /* Container */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1440px;
}

/* Dark Mode Variables */
.dark {
    --color-neutral-50: #0f172a;
    --color-neutral-100: #1e293b;
    --color-neutral-200: #334155;
    --color-neutral-300: #475569;
    --color-neutral-400: #64748b;
    --color-neutral-500: #94a3b8;
    --color-neutral-600: #cbd5e1;
    --color-neutral-700: #e2e8f0;
    --color-neutral-800: #f1f5f9;
    --color-neutral-900: #f8fafc;
    --color-neutral-950: #ffffff;

    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.5);
    --shadow-invoice: 0 4px 6px -1px rgb(0 0 0 / 0.4),
                      0 2px 4px -2px rgb(0 0 0 / 0.4),
                      0 20px 40px -10px rgb(0 0 0 / 0.5);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-neutral-700);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.dark body {
    color: var(--color-neutral-300);
    background-color: #0a0f1a;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-neutral-900);
}

.dark h1, .dark h2, .dark h3, .dark h4, .dark h5, .dark h6 {
    color: #ffffff;
}

a {
    color: inherit;
    text-decoration: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* Selection */
::selection {
    background-color: var(--color-primary-500);
    color: white;
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only:focus {
    position: fixed;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    padding: var(--space-4);
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--color-primary-500);
    color: white;
    z-index: var(--z-tooltip);
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

.container-sm {
    max-width: var(--container-md);
}

.container-lg {
    max-width: var(--container-2xl);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-neutral-200);
    transition: all var(--transition-base);
}

.dark .nav {
    background: rgba(10, 15, 26, 0.8);
    border-bottom-color: var(--color-neutral-800);
}

.nav-scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.dark .nav-scrolled {
    background: rgba(10, 15, 26, 0.95);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: 'Lato', sans-serif;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
}

.dark .nav-logo {
    color: #ffffff;
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-logo-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.nav-links {
    display: none;
    align-items: center;
    gap: var(--space-1);
}

@media (min-width: 1024px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-600);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-neutral-900);
    background: var(--color-neutral-100);
}

.dark .nav-link {
    color: var(--color-neutral-400);
}

.dark .nav-link:hover {
    color: #ffffff;
    background: var(--color-neutral-800);
}

.nav-link.active {
    color: var(--color-primary-500);
    background: var(--color-primary-50);
}

.dark .nav-link.active {
    background: rgba(2, 132, 199, 0.1);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 200px;
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.dark .nav-dropdown-content {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-700);
}

.nav-dropdown:hover .nav-dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
    transition: all var(--transition-fast);
}

.nav-dropdown-link:hover {
    background: var(--color-neutral-100);
    color: var(--color-neutral-900);
}

.dark .nav-dropdown-link:hover {
    background: var(--color-neutral-800);
    color: #ffffff;
}

.nav-dropdown-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    color: var(--color-primary-500);
}

.dark .nav-dropdown-icon {
    background: rgba(2, 132, 199, 0.2);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav-btn-login {
    display: none;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-700);
    transition: color var(--transition-fast);
}

.nav-btn-login:hover {
    color: var(--color-primary-500);
}

.dark .nav-btn-login {
    color: var(--color-neutral-300);
}

@media (min-width: 768px) {
    .nav-btn-login {
        display: block;
    }
}

.nav-btn-cta {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: white;
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
    transition: all var(--transition-base);
}

.nav-btn-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.4);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-neutral-500);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-neutral-100);
    color: var(--color-neutral-700);
}

.dark .theme-toggle:hover {
    background: var(--color-neutral-800);
    color: #ffffff;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-neutral-700);
}

.dark .mobile-menu-btn {
    color: var(--color-neutral-300);
}

@media (min-width: 1024px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: white;
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.dark .mobile-menu {
    background: #0a0f1a;
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
}

.mobile-menu-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-neutral-100);
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-neutral-700);
}

.dark .mobile-menu-close {
    background: var(--color-neutral-800);
    color: var(--color-neutral-300);
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-neutral-700);
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
    background: var(--color-neutral-100);
}

.dark .mobile-nav-link {
    color: var(--color-neutral-300);
}

.dark .mobile-nav-link:hover {
    background: var(--color-neutral-800);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: 'Lato', sans-serif;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    line-height: var(--leading-none);
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
    border-radius: var(--radius-xl);
}

.btn-primary {
    color: white;
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.4);
}

.btn-secondary {
    color: var(--color-neutral-700);
    background: white;
    border: 1px solid var(--color-neutral-300);
}

.btn-secondary:hover {
    border-color: var(--color-primary-500);
    color: var(--color-primary-500);
}

.dark .btn-secondary {
    color: var(--color-neutral-300);
    background: var(--color-neutral-800);
    border-color: var(--color-neutral-700);
}

.dark .btn-secondary:hover {
    border-color: var(--color-primary-400);
    color: var(--color-primary-400);
}

.btn-ghost {
    color: var(--color-neutral-700);
    background: transparent;
}

.btn-ghost:hover {
    background: var(--color-neutral-100);
}

.dark .btn-ghost {
    color: var(--color-neutral-300);
}

.dark .btn-ghost:hover {
    background: var(--color-neutral-800);
}

.btn-success {
    color: white;
    background: linear-gradient(135deg, var(--color-success-500) 0%, var(--color-success-600) 100%);
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.35);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
}

/* ==========================================================================
   INVOICE MOCKUP COMPONENT
   ========================================================================== */

.invoice-mockup {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-invoice);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.invoice-mockup:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.dark .invoice-mockup {
    background: var(--color-neutral-900);
    border: 1px solid var(--color-neutral-800);
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-neutral-200);
}

.dark .invoice-header {
    border-bottom-color: var(--color-neutral-800);
}

.invoice-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.invoice-brand-name {
    font-family: 'Lato', sans-serif;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary-500);
}

.invoice-brand-tagline {
    font-size: var(--text-xs);
    color: var(--color-neutral-500);
}

.invoice-meta {
    text-align: right;
}

.invoice-number {
    font-family: 'Lato', sans-serif;
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
}

.dark .invoice-number {
    color: #ffffff;
}

.invoice-date {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
    margin-top: var(--space-1);
}

.invoice-parties {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    padding: var(--space-6);
}

.invoice-party-label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-neutral-500);
    margin-bottom: var(--space-2);
}

.invoice-party-name {
    font-weight: var(--font-semibold);
    color: var(--color-neutral-900);
}

.dark .invoice-party-name {
    color: #ffffff;
}

.invoice-party-address {
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
    margin-top: var(--space-1);
}

.dark .invoice-party-address {
    color: var(--color-neutral-400);
}

.invoice-items {
    padding: 0 var(--space-6);
}

.invoice-items-table {
    width: 100%;
    border-collapse: collapse;
}

.invoice-items-table th {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-neutral-500);
    background: var(--color-neutral-50);
    text-align: left;
}

.dark .invoice-items-table th {
    background: var(--color-neutral-800);
}

.invoice-items-table th:last-child {
    text-align: right;
}

.invoice-items-table td {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-neutral-700);
    border-bottom: 1px solid var(--color-neutral-100);
}

.dark .invoice-items-table td {
    color: var(--color-neutral-300);
    border-bottom-color: var(--color-neutral-800);
}

.invoice-items-table td:last-child {
    text-align: right;
    font-weight: var(--font-medium);
}

.invoice-item-name {
    font-weight: var(--font-medium);
    color: var(--color-neutral-900);
}

.dark .invoice-item-name {
    color: #ffffff;
}

.invoice-totals {
    padding: var(--space-6);
    display: flex;
    justify-content: flex-end;
}

.invoice-totals-table {
    width: 200px;
}

.invoice-totals-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
}

.dark .invoice-totals-row {
    color: var(--color-neutral-400);
}

.invoice-totals-row.total {
    padding-top: var(--space-3);
    margin-top: var(--space-2);
    border-top: 2px solid var(--color-neutral-900);
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
}

.dark .invoice-totals-row.total {
    border-top-color: #ffffff;
    color: #ffffff;
}

.invoice-footer {
    padding: var(--space-6);
    background: var(--color-neutral-50);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dark .invoice-footer {
    background: var(--color-neutral-800);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    border-radius: var(--radius-full);
}

.status-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
}

.status-draft {
    background: var(--color-neutral-100);
    color: var(--color-neutral-600);
}

.status-draft .status-badge-dot {
    background: var(--color-neutral-400);
}

.dark .status-draft {
    background: var(--color-neutral-700);
    color: var(--color-neutral-300);
}

.status-sent {
    background: var(--color-primary-50);
    color: var(--color-primary-600);
}

.status-sent .status-badge-dot {
    background: var(--color-primary-500);
}

.dark .status-sent {
    background: rgba(2, 132, 199, 0.2);
    color: var(--color-primary-400);
}

.status-pending {
    background: var(--color-warning-100);
    color: var(--color-warning-600);
}

.status-pending .status-badge-dot {
    background: var(--color-warning-500);
}

.status-paid {
    background: var(--color-success-100);
    color: var(--color-success-600);
}

.status-paid .status-badge-dot {
    background: var(--color-success-500);
    animation: pulse-success 2s ease-in-out infinite;
}

.dark .status-paid {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-success-400);
}

.status-overdue {
    background: var(--color-error-100);
    color: var(--color-error-600);
}

.status-overdue .status-badge-dot {
    background: var(--color-error-500);
    animation: pulse-error 1s ease-in-out infinite;
}

@keyframes pulse-success {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

@keyframes pulse-error {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-50) 0%, white 50%, var(--color-neutral-50) 100%);
}

.dark .hero-bg {
    background: linear-gradient(135deg, rgba(2, 132, 199, 0.1) 0%, #0a0f1a 50%, var(--color-neutral-900) 100%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(2, 132, 199, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(2, 132, 199, 0.05) 0%, transparent 50%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(2, 132, 199, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(2, 132, 199, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.dark .hero-grid {
    background-image:
        linear-gradient(rgba(2, 132, 199, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(2, 132, 199, 0.05) 1px, transparent 1px);
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1.1fr;
        gap: var(--space-16);
    }
}

.hero-text {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero-text {
        text-align: left;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-600);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.dark .hero-badge {
    background: var(--color-neutral-800);
    border-color: var(--color-neutral-700);
    color: var(--color-neutral-300);
}

.hero-badge-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--color-success-100);
    border-radius: var(--radius-full);
}

.hero-badge-icon svg {
    width: 12px;
    height: 12px;
    color: var(--color-success-600);
}

.hero-title {
    font-size: var(--text-hero);
    font-weight: var(--font-extrabold);
    line-height: var(--leading-none);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-6);
}

.hero-title-gradient {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-neutral-600);
    max-width: 540px;
    margin-bottom: var(--space-8);
}

.dark .hero-subtitle {
    color: var(--color-neutral-400);
}

@media (min-width: 1024px) {
    .hero-subtitle {
        margin-left: 0;
        margin-right: auto;
    }
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
    }
}

@media (min-width: 1024px) {
    .hero-actions {
        justify-content: flex-start;
    }
}

.hero-cta-note {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
    margin-top: var(--space-4);
}

.hero-visual {
    position: relative;
}

.hero-invoice-wrapper {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
}

/* Floating elements around invoice */
.hero-float-element {
    position: absolute;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.dark .hero-float-element {
    background: var(--color-neutral-800);
    border: 1px solid var(--color-neutral-700);
}

.hero-float-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-float-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.hero-float-text {
    font-size: var(--text-sm);
}

.hero-float-value {
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
}

.dark .hero-float-value {
    color: #ffffff;
}

.hero-float-label {
    font-size: var(--text-xs);
    color: var(--color-neutral-500);
}

.hero-float-1 {
    top: 10%;
    right: -20px;
    animation: float-1 6s ease-in-out infinite;
}

.hero-float-2 {
    bottom: 20%;
    left: -30px;
    animation: float-2 7s ease-in-out infinite;
}

.hero-float-3 {
    bottom: 5%;
    right: 10%;
    animation: float-3 5s ease-in-out infinite;
}

@keyframes float-1 {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

@keyframes float-2 {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-10px) rotate(-2deg); }
}

@keyframes float-3 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.section {
    padding: var(--space-20) 0;
}

.section-lg {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-4);
    background: var(--color-primary-50);
    color: var(--color-primary-600);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-4);
}

.dark .section-tag {
    background: rgba(2, 132, 199, 0.2);
    color: var(--color-primary-400);
}

.section-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-6);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-neutral-600);
}

.dark .section-subtitle {
    color: var(--color-neutral-400);
}

/* ==========================================================================
   FEATURES GRID
   ========================================================================== */

.features-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    position: relative;
    padding: var(--space-8);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-primary-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.dark .feature-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.dark .feature-card:hover {
    border-color: var(--color-primary-500);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.dark .feature-icon {
    background: linear-gradient(135deg, rgba(2, 132, 199, 0.2) 0%, rgba(2, 132, 199, 0.1) 100%);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary-500);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--text-base);
    color: var(--color-neutral-600);
    line-height: var(--leading-relaxed);
}

.dark .feature-description {
    color: var(--color-neutral-400);
}

/* ==========================================================================
   STATS SECTION
   ========================================================================== */

.stats-section {
    background: var(--color-neutral-50);
}

.dark .stats-section {
    background: var(--color-neutral-900);
}

.stats-grid {
    display: grid;
    gap: var(--space-8);
    text-align: center;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-item {
    padding: var(--space-6);
}

.stat-value {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-base);
    color: var(--color-neutral-600);
    font-weight: var(--font-medium);
}

.dark .stat-label {
    color: var(--color-neutral-400);
}

/* ==========================================================================
   PRICING
   ========================================================================== */

.pricing-toggle-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.pricing-toggle-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-600);
}

.dark .pricing-toggle-label {
    color: var(--color-neutral-400);
}

.pricing-toggle-label.active {
    color: var(--color-neutral-900);
}

.dark .pricing-toggle-label.active {
    color: #ffffff;
}

.pricing-toggle {
    position: relative;
    width: 56px;
    height: 28px;
    background: var(--color-neutral-200);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-base);
}

.dark .pricing-toggle {
    background: var(--color-neutral-700);
}

.pricing-toggle.active {
    background: var(--color-primary-500);
}

.pricing-toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.pricing-toggle.active .pricing-toggle-knob {
    transform: translateX(28px);
}

.pricing-save-badge {
    display: inline-flex;
    padding: var(--space-1) var(--space-3);
    background: var(--color-success-100);
    color: var(--color-success-700);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}

.dark .pricing-save-badge {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-success-400);
}

.pricing-grid {
    display: grid;
    gap: var(--space-8);
    align-items: start;
}

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    position: relative;
    padding: var(--space-8);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.dark .pricing-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.pricing-card:hover {
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--color-primary-500);
    border-width: 2px;
    transform: scale(1.02);
}

.pricing-card.featured::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    border-radius: var(--radius-2xl);
    z-index: -1;
    opacity: 0.1;
}

.pricing-popular {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-5);
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-neutral-200);
    margin-bottom: var(--space-6);
}

.dark .pricing-header {
    border-bottom-color: var(--color-neutral-800);
}

.pricing-plan-name {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-2);
}

.dark .pricing-plan-name {
    color: #ffffff;
}

.pricing-plan-description {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
    margin-bottom: var(--space-6);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-1);
}

.pricing-currency {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--color-neutral-600);
}

.dark .pricing-currency {
    color: var(--color-neutral-400);
}

.pricing-amount {
    font-size: var(--text-6xl);
    font-weight: var(--font-extrabold);
    line-height: var(--leading-none);
    color: var(--color-neutral-900);
}

.dark .pricing-amount {
    color: #ffffff;
}

.pricing-period {
    font-size: var(--text-base);
    color: var(--color-neutral-500);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.pricing-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--color-neutral-700);
}

.dark .pricing-feature {
    color: var(--color-neutral-300);
}

.pricing-feature-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-success-100);
    border-radius: var(--radius-full);
    color: var(--color-success-600);
}

.dark .pricing-feature-icon {
    background: rgba(34, 197, 94, 0.2);
}

.pricing-feature-icon svg {
    width: 12px;
    height: 12px;
}

.pricing-cta {
    width: 100%;
}

/* ==========================================================================
   TESTIMONIALS
   ========================================================================== */

.testimonials-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    padding: var(--space-8);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.dark .testimonial-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.testimonial-rating {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}

.testimonial-star {
    width: 20px;
    height: 20px;
    color: var(--color-warning-400);
}

.testimonial-content {
    font-size: var(--text-base);
    color: var(--color-neutral-700);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.dark .testimonial-content {
    color: var(--color-neutral-300);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-primary-200) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-semibold);
    color: var(--color-primary-600);
}

.testimonial-author-info {
    flex: 1;
}

.testimonial-author-name {
    font-weight: var(--font-semibold);
    color: var(--color-neutral-900);
}

.dark .testimonial-author-name {
    color: #ffffff;
}

.testimonial-author-role {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.cta-section {
    position: relative;
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
    overflow: hidden;
}

.cta-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    color: white;
    margin-bottom: var(--space-6);
}

.cta-subtitle {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    justify-content: center;
    align-items: center;
}

@media (min-width: 640px) {
    .cta-actions {
        flex-direction: row;
    }
}

.cta-btn-primary {
    padding: var(--space-4) var(--space-8);
    background: white;
    color: var(--color-primary-600);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-base);
}

.cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.cta-btn-secondary {
    padding: var(--space-4) var(--space-8);
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    transition: all var(--transition-base);
}

.cta-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-neutral-50);
    border-top: 1px solid var(--color-neutral-200);
}

.dark .footer {
    background: var(--color-neutral-900);
    border-top-color: var(--color-neutral-800);
}

.footer-grid {
    display: grid;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-4);
}

.dark .footer-logo {
    color: #ffffff;
}

.footer-description {
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.dark .footer-description {
    color: var(--color-neutral-400);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-lg);
    color: var(--color-neutral-600);
    transition: all var(--transition-fast);
}

.footer-social-link:hover {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
    color: white;
}

.dark .footer-social-link {
    background: var(--color-neutral-800);
    border-color: var(--color-neutral-700);
    color: var(--color-neutral-400);
}

.dark .footer-social-link:hover {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
    color: white;
}

.footer-nav-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-4);
}

.dark .footer-nav-title {
    color: #ffffff;
}

.footer-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-nav-link {
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
    transition: color var(--transition-fast);
}

.footer-nav-link:hover {
    color: var(--color-primary-500);
}

.dark .footer-nav-link {
    color: var(--color-neutral-400);
}

.dark .footer-nav-link:hover {
    color: var(--color-primary-400);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-neutral-200);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.dark .footer-bottom {
    border-top-color: var(--color-neutral-800);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
}

.footer-legal-links {
    display: flex;
    gap: var(--space-6);
}

.footer-legal-link {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
    transition: color var(--transition-fast);
}

.footer-legal-link:hover {
    color: var(--color-primary-500);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Counter Animation */
.counter {
    display: inline-block;
}

/* Payment Success Animation */
@keyframes payment-success {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.payment-success-icon {
    animation: payment-success 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Check mark animation */
@keyframes check-draw {
    0% {
        stroke-dashoffset: 100;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.check-animated {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: check-draw 0.4s ease-out 0.2s forwards;
}

/* Pulse animation for active items */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(2, 132, 199, 0);
    }
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.hidden { display: none; }
.block { display: block; }

@media (min-width: 768px) {
    .md\:flex { display: flex; }
    .md\:hidden { display: none; }
    .md\:block { display: block; }
}

@media (min-width: 1024px) {
    .lg\:flex { display: flex; }
    .lg\:hidden { display: none; }
    .lg\:block { display: block; }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal, .reveal-left, .reveal-right, .reveal-scale {
        opacity: 1;
        transform: none;
    }

    .hero-float-element {
        animation: none;
    }

    .invoice-mockup {
        transform: none;
    }

    .invoice-mockup:hover {
        transform: none;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .nav,
    .mobile-menu,
    .footer,
    .cta-section {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: black;
        background: white;
    }

    .hero {
        min-height: auto;
        padding: 2cm 0;
    }

    a {
        text-decoration: underline;
    }

    .section {
        padding: 1cm 0;
    }
}

/* ==========================================================================
   SCROLLBAR STYLES
   ========================================================================== */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-neutral-100);
}

.dark ::-webkit-scrollbar-track {
    background: var(--color-neutral-900);
}

::-webkit-scrollbar-thumb {
    background: var(--color-neutral-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-400);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--color-neutral-700);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-600);
}

/* ==========================================================================
   PAGE-SPECIFIC STYLES
   ========================================================================== */

/* Templates Gallery */
.templates-gallery {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .templates-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .templates-gallery {
        grid-template-columns: repeat(3, 1fr);
    }
}

.template-card {
    position: relative;
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.template-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.dark .template-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.template-preview {
    position: relative;
    aspect-ratio: 4/3;
    background: var(--color-neutral-100);
    overflow: hidden;
}

.dark .template-preview {
    background: var(--color-neutral-800);
}

.template-preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slower);
}

.template-card:hover .template-preview-img {
    transform: scale(1.05);
}

.template-info {
    padding: var(--space-6);
}

.template-name {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-2);
}

.dark .template-name {
    color: #ffffff;
}

.template-description {
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
}

.dark .template-description {
    color: var(--color-neutral-400);
}

/* Integrations Grid */
.integrations-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .integrations-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .integrations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .integrations-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.integration-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-8);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.integration-card:hover {
    border-color: var(--color-primary-300);
    box-shadow: var(--shadow-md);
}

.dark .integration-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.dark .integration-card:hover {
    border-color: var(--color-primary-500);
}

.integration-logo {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-neutral-100);
    border-radius: var(--radius-xl);
}

.dark .integration-logo {
    background: var(--color-neutral-800);
}

.integration-name {
    font-weight: var(--font-semibold);
    color: var(--color-neutral-900);
}

.dark .integration-name {
    color: #ffffff;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.blog-card {
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.dark .blog-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.blog-card-image {
    aspect-ratio: 16/10;
    background: var(--color-neutral-100);
    overflow: hidden;
}

.dark .blog-card-image {
    background: var(--color-neutral-800);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slower);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--space-6);
}

.blog-card-category {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-primary-500);
    margin-bottom: var(--space-3);
}

.blog-card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
}

.dark .blog-card-title {
    color: #ffffff;
}

.blog-card-excerpt {
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.dark .blog-card-excerpt {
    color: var(--color-neutral-400);
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-700);
    margin-bottom: var(--space-2);
}

.dark .form-label {
    color: var(--color-neutral-300);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    color: var(--color-neutral-900);
    background: white;
    border: 1px solid var(--color-neutral-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.1);
}

.dark .form-input {
    color: #ffffff;
    background: var(--color-neutral-800);
    border-color: var(--color-neutral-700);
}

.dark .form-input:focus {
    border-color: var(--color-primary-400);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}

.form-input::placeholder {
    color: var(--color-neutral-400);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* Auth Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: var(--space-10);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.dark .auth-card {
    background: var(--color-neutral-900);
    border-color: var(--color-neutral-800);
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-8);
}

.auth-title {
    text-align: center;
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-2);
}

.dark .auth-title {
    color: #ffffff;
}

.auth-subtitle {
    text-align: center;
    font-size: var(--text-base);
    color: var(--color-neutral-600);
    margin-bottom: var(--space-8);
}

.dark .auth-subtitle {
    color: var(--color-neutral-400);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--color-neutral-200);
}

.dark .auth-divider-line {
    background: var(--color-neutral-700);
}

.auth-divider-text {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
}

.auth-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-3);
    background: white;
    border: 1px solid var(--color-neutral-300);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-neutral-700);
    transition: all var(--transition-fast);
}

.auth-social-btn:hover {
    background: var(--color-neutral-50);
    border-color: var(--color-neutral-400);
}

.dark .auth-social-btn {
    background: var(--color-neutral-800);
    border-color: var(--color-neutral-700);
    color: var(--color-neutral-300);
}

.dark .auth-social-btn:hover {
    background: var(--color-neutral-700);
}

.auth-link {
    color: var(--color-primary-500);
    font-weight: var(--font-medium);
    transition: color var(--transition-fast);
}

.auth-link:hover {
    color: var(--color-primary-600);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-neutral-600);
}

.dark .auth-footer {
    color: var(--color-neutral-400);
}

/* Content visibility for performance */
.section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}