/* ==========================================================================
   FINANCEFLOW - Premium Personal Finance SaaS Template
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */

:root {
    /* Colors - Green & Emerald Gradient with Gold Accents */
    --color-primary-400: #34D399;
    --color-primary-500: #10B981;
    --color-primary-600: #059669;
    --color-primary-700: #047857;

    --color-gold-400: #FBBF24;
    --color-gold-500: #F59E0B;
    --color-gold-600: #D97706;

    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Neutral colors */
    --color-white: #FFFFFF;
    --color-neutral-50: #F9FAFB;
    --color-neutral-100: #F3F4F6;
    --color-neutral-200: #E5E7EB;
    --color-neutral-300: #D1D5DB;
    --color-neutral-400: #9CA3AF;
    --color-neutral-500: #6B7280;
    --color-neutral-600: #4B5563;
    --color-neutral-700: #374151;
    --color-neutral-800: #1F2937;
    --color-neutral-900: #111827;
    --color-black: #000000;

    /* Dark mode colors */
    --color-dark-bg: #0a0a0a;
    --color-dark-surface: #111111;
    --color-dark-elevated: #1a1a1a;

    /* Typography Scale */
    --text-hero: clamp(3rem, 8vw, 6rem);        /* 48-96px */
    --text-display: clamp(2.5rem, 5vw, 4rem);   /* 40-64px */
    --text-h1: clamp(2rem, 4vw, 3rem);          /* 32-48px */
    --text-h2: clamp(1.5rem, 3vw, 2.25rem);     /* 24-36px */
    --text-h3: clamp(1.25rem, 2vw, 1.5rem);     /* 20-24px */
    --text-h4: 1.125rem;                         /* 18px */
    --text-body: 1rem;                           /* 16px */
    --text-small: 0.875rem;                      /* 14px */
    --text-xs: 0.75rem;                          /* 12px */

    /* Spacing Scale (8px base) */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* Shadows with Glow */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 60px rgba(16, 185, 129, 0.3);
    --shadow-glow-gold: 0 0 60px rgba(245, 158, 11, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 800ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-nav: 300;
    --z-modal: 400;
    --z-toast: 500;
}

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

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--text-body);
    line-height: 1.6;
    color: var(--color-neutral-900);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.dark body {
    color: var(--color-white);
    background-color: var(--color-dark-bg);
}

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

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

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-neutral-900);
}

.dark h1, .dark h2, .dark h3, .dark h4, .dark h5, .dark h6 {
    color: var(--color-white);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }
h4 { font-size: var(--text-h4); }

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

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-primary-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-gold {
    background: linear-gradient(135deg, var(--color-gold-400) 0%, var(--color-gold-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================================================
   GLASSMORPHISM STYLES
   ========================================================================== */

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-heavy {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dark .glass-heavy {
    background: rgba(10, 10, 10, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   GRADIENT BACKGROUNDS
   ========================================================================== */

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
}

.bg-gradient-mesh {
    background:
        radial-gradient(at 40% 20%, rgba(16, 185, 129, 0.3) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(5, 150, 105, 0.3) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(52, 211, 153, 0.3) 0px, transparent 50%),
        radial-gradient(at 80% 100%, rgba(245, 158, 11, 0.2) 0px, transparent 50%);
}

.bg-grid {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.dark .bg-grid {
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-smooth),
                transform var(--transition-smooth);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all var(--transition-smooth);
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all var(--transition-smooth);
}

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

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all var(--transition-smooth);
}

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

.reveal-blur {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(20px);
    transition: all var(--transition-smooth);
}

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

/* 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; }

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

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform var(--transition-slow);
}

.hover-zoom:hover img {
    transform: scale(1.05);
}

.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.hover-shine:hover::before {
    left: 100%;
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

@keyframes subtle-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.animate-bounce-subtle {
    animation: subtle-bounce 2s ease-in-out infinite;
}

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin-slow {
    animation: spin-slow 20s linear infinite;
}

/* Money flow animation */
@keyframes money-flow {
    0% { transform: translateY(0) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

.money-flow {
    animation: money-flow 10s ease-in-out infinite;
}

/* Chart bar animation */
@keyframes bar-grow {
    from { transform: scaleY(0); transform-origin: bottom; }
    to { transform: scaleY(1); transform-origin: bottom; }
}

.chart-bar {
    animation: bar-grow 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-weight: 600;
    font-size: var(--text-small);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    color: var(--color-white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-gold {
    background: linear-gradient(135deg, var(--color-gold-500) 0%, var(--color-gold-600) 100%);
    color: var(--color-white);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-gold);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary-500);
    color: var(--color-primary-500);
}

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

.btn-outline:hover {
    background: var(--color-primary-500);
    color: var(--color-white);
}

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

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

.card-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
}

.dark .card-glass {
    background: rgba(17, 17, 17, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Feature Icons */
.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    color: var(--color-white);
}

.feature-icon-gold {
    background: linear-gradient(135deg, var(--color-gold-500) 0%, var(--color-gold-600) 100%);
}

/* Stats Counter */
.stat-number {
    font-size: var(--text-display);
    font-weight: 700;
    color: var(--color-primary-500);
}

.dark .stat-number {
    color: var(--color-primary-400);
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--color-neutral-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.dark .progress-bar {
    background: var(--color-neutral-800);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

.dark .badge {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-primary-400);
}

.badge-gold {
    background: var(--color-gold-100);
    color: var(--color-gold-700);
}

.dark .badge-gold {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-gold-400);
}

/* ==========================================================================
   DASHBOARD MOCKUP STYLES
   ========================================================================== */

.dashboard-mockup {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-2xl);
}

.dark .dashboard-mockup {
    background: var(--color-dark-surface);
    border-color: var(--color-neutral-800);
}

.chart-container {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: flex-end;
    gap: var(--space-2);
    padding: var(--space-4);
}

.chart-bar-item {
    flex: 1;
    background: linear-gradient(to top, var(--color-primary-600), var(--color-primary-400));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    min-height: 20px;
}

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

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

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

.pricing-card.featured {
    border-color: var(--color-primary-500);
    box-shadow: var(--shadow-glow);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

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

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

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

footer {
    background: var(--color-neutral-50);
    border-top: 1px solid var(--color-neutral-200);
}

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

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

.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-visible {
    position: static;
    width: auto;
    height: auto;
    padding: var(--space-4);
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* ==========================================================================
   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, .reveal-blur {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
    :root {
        --space-20: 3rem;
        --space-24: 4rem;
        --space-32: 5rem;
    }
}

/* ==========================================================================
   PERFORMANCE OPTIMIZATIONS
   ========================================================================== */

section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.animated {
    transform: translateZ(0);
    will-change: transform, opacity;
}

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

@media print {
    nav, footer, .btn, button {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    a {
        text-decoration: underline;
    }
}

/* ==========================================================================
   CUSTOM SCROLLBAR
   ========================================================================== */

::-webkit-scrollbar {
    width: 12px;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-neutral-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-500);
}