/* ==========================================================================
   BANKSTACK - Premium Neo Banking Platform
   Design System & Core Styles
   ========================================================================== */

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

:root {
    /* Brand Colors */
    --color-primary: #475569;
    --color-primary-light: #64748b;
    --color-primary-dark: #334155;
    --color-accent: #CA8A04;
    --color-accent-light: #EAB308;
    --color-accent-dark: #A16207;

    /* Semantic Colors */
    --color-success: #10B981;
    --color-success-light: #34D399;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-black: #000000;
    --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;

    /* Background Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-neutral-50);
    --bg-tertiary: var(--color-neutral-100);
    --bg-card: var(--color-white);
    --bg-card-hover: var(--color-neutral-50);

    /* Text Colors */
    --text-primary: var(--color-neutral-900);
    --text-secondary: var(--color-neutral-600);
    --text-tertiary: var(--color-neutral-500);
    --text-muted: var(--color-neutral-400);
    --text-inverse: var(--color-white);

    /* Border Colors */
    --border-light: var(--color-neutral-200);
    --border-default: var(--color-neutral-300);
    --border-dark: var(--color-neutral-400);

    /* Typography Scale (Fluid) */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
    --text-5xl: clamp(3rem, 2rem + 5vw, 4rem);
    --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 5rem);
    --text-hero: clamp(3rem, 2rem + 6vw, 6rem);

    /* 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: 1.1;
    --leading-snug: 1.25;
    --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 */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --space-40: 10rem;
    --space-48: 12rem;
    --space-64: 16rem;

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

    /* Shadows */
    --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-default: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-2xl: 0 50px 100px -20px 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(71, 85, 105, 0.3);
    --glow-accent: 0 0 40px rgba(202, 138, 4, 0.3);
    --glow-success: 0 0 40px rgba(16, 185, 129, 0.3);
    --glow-card: 0 0 60px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-default: 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: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* ==========================================================================
   DARK MODE TOKENS
   ========================================================================== */

.dark {
    --bg-primary: var(--color-neutral-950);
    --bg-secondary: var(--color-neutral-900);
    --bg-tertiary: var(--color-neutral-800);
    --bg-card: var(--color-neutral-900);
    --bg-card-hover: var(--color-neutral-800);

    --text-primary: var(--color-neutral-50);
    --text-secondary: var(--color-neutral-300);
    --text-tertiary: var(--color-neutral-400);
    --text-muted: var(--color-neutral-500);

    --border-light: var(--color-neutral-800);
    --border-default: var(--color-neutral-700);
    --border-dark: var(--color-neutral-600);

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

    --glow-primary: 0 0 40px rgba(71, 85, 105, 0.2);
    --glow-accent: 0 0 40px rgba(202, 138, 4, 0.2);
    --glow-card: 0 0 60px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   BASE RESET & DEFAULTS
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

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

ul, ol {
    list-style: none;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

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

.text-gradient-gold {
    background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent-light) 50%, var(--color-accent-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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

.section-lg {
    padding-block: var(--space-32);
}

/* ==========================================================================
   COMPONENTS - NAVIGATION
   ========================================================================== */

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

.dark .nav {
    background: rgba(2, 6, 23, 0.8);
}

.nav.scrolled {
    box-shadow: var(--shadow-sm);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.nav-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.nav-links {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

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

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    transition: color var(--transition-default);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-default);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-default);
}

.nav-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

/* Mobile Menu */
.mobile-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: var(--z-modal);
    overflow-y: auto;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mobile-nav-link {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: all var(--transition-default);
}

.mobile-nav-link:hover {
    background: var(--bg-tertiary);
}

/* ==========================================================================
   COMPONENTS - BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    line-height: var(--leading-normal);
    border-radius: var(--radius-lg);
    transition: all var(--transition-default);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

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

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-light);
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    background: var(--bg-tertiary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
}

/* ==========================================================================
   COMPONENTS - CARDS
   ========================================================================== */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    transition: all var(--transition-slow);
}

.card:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-lg);
}

.card-lg {
    padding: var(--space-8);
}

.card-gradient {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
}

.card-elevated {
    box-shadow: var(--shadow-lg);
}

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

.dark .card-glass {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   COMPONENTS - BANKING CARD (3D Tilt)
   ========================================================================== */

.bank-card-container {
    perspective: 1000px;
}

.bank-card {
    position: relative;
    width: 340px;
    height: 215px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    color: var(--color-white);
    overflow: hidden;
    transform-style: preserve-3d;
    transition: transform var(--transition-slow);
    box-shadow: var(--shadow-xl);
}

.bank-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.bank-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.bank-card-gold {
    background: linear-gradient(135deg, #CA8A04 0%, #A16207 100%);
}

.bank-card-dark {
    background: linear-gradient(135deg, var(--color-neutral-800) 0%, var(--color-neutral-950) 100%);
}

.bank-card-chip {
    width: 45px;
    height: 35px;
    background: linear-gradient(135deg, #e8d5b7 0%, #b8a07a 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
    position: relative;
}

.bank-card-chip::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
}

.bank-card-number {
    font-size: var(--text-xl);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wider);
    margin-bottom: var(--space-6);
    font-family: 'Monaco', 'Consolas', monospace;
}

.bank-card-details {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.bank-card-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

.bank-card-expiry {
    font-size: var(--text-xs);
    opacity: 0.8;
}

.bank-card-brand {
    position: absolute;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    gap: -8px;
}

.bank-card-brand-circle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.bank-card-brand-circle:first-child {
    background: rgba(255, 255, 255, 0.7);
}

.bank-card-brand-circle:last-child {
    background: rgba(255, 255, 255, 0.4);
    margin-left: -12px;
}

/* ==========================================================================
   COMPONENTS - TRANSACTION LIST
   ========================================================================== */

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

.transaction-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    transition: all var(--transition-default);
}

.transaction-item:hover {
    background: var(--bg-tertiary);
}

.transaction-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-xl);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.transaction-icon img {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-md);
}

.transaction-details {
    flex: 1;
    min-width: 0;
}

.transaction-name {
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.transaction-category {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.transaction-amount {
    text-align: right;
}

.transaction-value {
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.transaction-value.positive {
    color: var(--color-success);
}

.transaction-value.negative {
    color: var(--color-error);
}

.transaction-date {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* ==========================================================================
   COMPONENTS - SPARKLINE CHART
   ========================================================================== */

.sparkline-container {
    height: 60px;
    position: relative;
}

.sparkline {
    width: 100%;
    height: 100%;
}

.sparkline-path {
    fill: none;
    stroke: var(--color-success);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.sparkline-area {
    fill: url(#sparkline-gradient);
    opacity: 0.2;
}

/* ==========================================================================
   COMPONENTS - DASHBOARD WIDGET
   ========================================================================== */

.dashboard-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    transition: all var(--transition-slow);
}

.dashboard-widget:hover {
    box-shadow: var(--shadow-lg);
}

.widget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.widget-title {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

.widget-action {
    color: var(--text-muted);
    transition: color var(--transition-default);
}

.widget-action:hover {
    color: var(--text-primary);
}

.widget-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.widget-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.widget-change.positive {
    color: var(--color-success);
}

.widget-change.negative {
    color: var(--color-error);
}

/* ==========================================================================
   COMPONENTS - QUICK ACTIONS
   ========================================================================== */

.quick-actions {
    display: flex;
    gap: var(--space-4);
}

.quick-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    transition: all var(--transition-default);
    min-width: 80px;
}

.quick-action:hover {
    background: var(--bg-tertiary);
}

.quick-action-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-default);
}

.quick-action:hover .quick-action-icon {
    transform: scale(1.1);
    box-shadow: var(--glow-primary);
}

.quick-action-label {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

/* ==========================================================================
   COMPONENTS - CURRENCY SELECTOR
   ========================================================================== */

.currency-selector {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-default);
}

.currency-selector:hover {
    background: var(--border-light);
}

.currency-flag {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.currency-code {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.currency-dropdown-icon {
    color: var(--text-muted);
}

/* ==========================================================================
   COMPONENTS - FEATURE GRID
   ========================================================================== */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
}

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

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-slow);
}

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

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

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

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

/* ==========================================================================
   COMPONENTS - PRICING TABLE
   ========================================================================== */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
}

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

.pricing-card {
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-slow);
    position: relative;
}

.pricing-card:hover {
    border-color: var(--border-default);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    transform: scale(1.02);
}

.pricing-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

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

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

.pricing-price {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

.pricing-price span {
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    color: var(--text-tertiary);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.pricing-feature-icon {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* ==========================================================================
   COMPONENTS - TESTIMONIALS
   ========================================================================== */

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-slow);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
}

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

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

.testimonial-quote {
    font-size: var(--text-lg);
    color: var(--text-primary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

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

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial-name {
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

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

/* ==========================================================================
   COMPONENTS - FORM ELEMENTS
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-6);
}

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

.form-input {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-default);
}

.form-input:hover {
    border-color: var(--border-default);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(71, 85, 105, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: var(--space-12);
}

.form-input-icon svg {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
}

.form-checkbox input {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-md);
    accent-color: var(--color-primary);
}

.form-checkbox-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* ==========================================================================
   COMPONENTS - STATS
   ========================================================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

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

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* ==========================================================================
   COMPONENTS - FOOTER
   ========================================================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding-block: var(--space-16);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

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

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(4, 1fr);
    }
}

.footer-brand {
    grid-column: 1 / -1;
}

@media (min-width: 1024px) {
    .footer-brand {
        grid-column: auto;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-description {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    max-width: 280px;
    margin-bottom: var(--space-6);
}

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

.footer-social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-default);
}

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

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

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-link {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    transition: color var(--transition-default);
}

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

.footer-bottom {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
}

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

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

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

.footer-legal-link {
    font-size: var(--text-sm);
    color: var(--text-muted);
    transition: color var(--transition-default);
}

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

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

.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);
}

.reveal-blur {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.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; }
.stagger-7 { transition-delay: 0.7s; }
.stagger-8 { transition-delay: 0.8s; }

/* ==========================================================================
   ANIMATIONS - HOVER EFFECTS
   ========================================================================== */

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

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

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

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

.hover-glow {
    transition: box-shadow var(--transition-slow);
}

.hover-glow:hover {
    box-shadow: var(--glow-accent);
}

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

@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; }
}

.animate-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 shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.animate-shimmer {
    position: relative;
    overflow: hidden;
}

.animate-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes card-tilt {
    0%, 100% { transform: rotateY(0deg) rotateX(0deg); }
    25% { transform: rotateY(10deg) rotateX(5deg); }
    75% { transform: rotateY(-10deg) rotateX(-5deg); }
}

.animate-tilt {
    animation: card-tilt 8s ease-in-out infinite;
}

@keyframes count-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

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

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-2) var(--space-4);
    z-index: 100;
    transition: top var(--transition-default);
}

.skip-link:focus {
    top: 0;
}

/* Text utilities */
.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }

/* ==========================================================================
   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;
    }
}

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

@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    a[href]::after {
        content: " (" attr(href) ")";
    }

    .nav,
    .footer,
    .btn,
    .skip-link {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }

    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
}

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

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-dark);
}

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

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

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