/**
 * AdultTok Design System v2.0
 * Modern, Professional Design Foundation
 * Last Updated: January 2026
 */

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

:root {
    /* ===== COLOR PALETTE ===== */
    
    /* Primary Brand Colors */
    --color-primary: #6366f1;        /* Indigo - main brand color */
    --color-primary-dark: #4f46e5;   /* Darker indigo for hover states */
    --color-primary-light: #818cf8;  /* Lighter indigo for backgrounds */
    --color-primary-subtle: #eef2ff; /* Very light indigo for highlights */
    
    /* Secondary/Accent Colors */
    --color-accent: #ec4899;         /* Pink - for emphasis and CTAs */
    --color-accent-dark: #db2777;
    --color-accent-light: #f9a8d4;
    
    /* Neutral Colors (Dark Theme Base) */
    --color-background: #0f0f0f;     /* Almost black background */
    --color-surface: #1a1a1a;        /* Cards, panels, elevated surfaces */
    --color-surface-hover: #242424;  /* Hover state for surfaces */
    --color-border: #2a2a2a;         /* Subtle borders */
    --color-divider: #333333;        /* Dividers, separators */
    
    /* Text Colors */
    --color-text-primary: #ffffff;   /* Main text */
    --color-text-secondary: #a3a3a3; /* Secondary text, labels */
    --color-text-tertiary: #737373;  /* Placeholder, disabled text */
    --color-text-inverse: #0f0f0f;   /* Text on light backgrounds */
    
    /* Semantic Colors */
    --color-success: #10b981;        /* Green - success states */
    --color-success-bg: #064e3b;
    --color-warning: #f59e0b;        /* Amber - warnings */
    --color-warning-bg: #78350f;
    --color-error: #ef4444;          /* Red - errors */
    --color-error-bg: #7f1d1d;
    --color-info: #3b82f6;           /* Blue - info */
    --color-info-bg: #1e3a8a;
    
    /* ===== TYPOGRAPHY ===== */
    
    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    
    /* Font Weights */
    --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;
    
    /* ===== SPACING ===== */
    --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 */
    
    /* ===== BORDERS ===== */
    --border-width-thin: 1px;
    --border-width-medium: 2px;
    --border-width-thick: 4px;
    
    --border-radius-none: 0;
    --border-radius-sm: 0.25rem;    /* 4px */
    --border-radius-md: 0.5rem;     /* 8px */
    --border-radius-lg: 0.75rem;    /* 12px */
    --border-radius-xl: 1rem;       /* 16px */
    --border-radius-2xl: 1.5rem;    /* 24px */
    --border-radius-full: 9999px;   /* Pill shape */
    
    /* ===== SHADOWS ===== */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.4);
    
    /* ===== Z-INDEX SCALE ===== */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1100;
    --z-fixed: 1200;
    --z-modal-backdrop: 1300;
    --z-modal: 1400;
    --z-popover: 1500;
    --z-tooltip: 1600;
    --z-notification: 1700;
    
    /* ===== TRANSITIONS ===== */
    --transition-fast: 150ms;
    --transition-base: 250ms;
    --transition-slow: 350ms;
    --transition-slower: 500ms;
    
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* ===== LAYOUT ===== */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    
    --sidebar-width: 240px;
    --header-height: 64px;
    --footer-height: 80px;
    
    /* ===== BREAKPOINTS (for JS) ===== */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
}

/* ==========================================
   GLOBAL RESETS & BASE STYLES
   ========================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
}

h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

h5 {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
}

h6 {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-out);
}

a:hover {
    color: var(--color-primary-dark);
}

strong, b {
    font-weight: var(--font-semibold);
}

em, i {
    font-style: italic;
}

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background-color: var(--color-surface);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius-sm);
    color: var(--color-accent);
}

pre {
    background-color: var(--color-surface);
    padding: var(--space-4);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    margin-bottom: var(--space-4);
}

pre code {
    background: none;
    padding: 0;
}

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

/* Text Colors */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-info { color: var(--color-info); }

/* Background Colors */
.bg-surface { background-color: var(--color-surface); }
.bg-primary { background-color: var(--color-primary); }
.bg-accent { background-color: var(--color-accent); }
.bg-success { background-color: var(--color-success-bg); }
.bg-warning { background-color: var(--color-warning-bg); }
.bg-error { background-color: var(--color-error-bg); }
.bg-info { background-color: var(--color-info-bg); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.ml-2 { margin-left: var(--space-2); }
.mr-2 { margin-right: var(--space-2); }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox Utilities */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Font Weights */
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Border Radius */
.rounded-none { border-radius: var(--border-radius-none); }
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }
.rounded-full { border-radius: var(--border-radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }

/* Height */
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* Transitions */
.transition-all {
    transition: all var(--transition-base) var(--ease-out);
}

.transition-colors {
    transition: color var(--transition-fast) var(--ease-out),
                background-color var(--transition-fast) var(--ease-out),
                border-color var(--transition-fast) var(--ease-out);
}

.transition-transform {
    transition: transform var(--transition-base) var(--ease-out);
}

/* ==========================================
   BREADCRUMBS CONTAINER
   ========================================== */

.breadcrumbs-container {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
}

@media (max-width: 767px) {
    .breadcrumbs-container {
        display: none; /* Hide on mobile - navigation is in bottom bar */
    }
}

/* ==========================================
   SCROLLBAR STYLING (Dark Theme)
   ========================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) var(--color-background);
}

/* ==========================================
   SELECTION STYLING
   ========================================== */

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

::-moz-selection {
    background-color: var(--color-primary);
    color: white;
}

/* ==========================================
   FOCUS STYLES (Accessibility)
   ========================================== */

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================
   CONTAINER & LAYOUT
   ========================================== */

.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

@media (min-width: 640px) {
    .container { max-width: var(--container-sm); }
}

@media (min-width: 768px) {
    .container { max-width: var(--container-md); }
}

@media (min-width: 1024px) {
    .container { max-width: var(--container-lg); }
}

@media (min-width: 1280px) {
    .container { max-width: var(--container-xl); }
}

@media (min-width: 1536px) {
    .container { max-width: var(--container-2xl); }
}

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

/* Hide on mobile */
@media (max-width: 767px) {
    .hidden-mobile { display: none !important; }
}

/* Hide on tablet */
@media (min-width: 768px) and (max-width: 1023px) {
    .hidden-tablet { display: none !important; }
}

/* Hide on desktop */
@media (min-width: 1024px) {
    .hidden-desktop { display: none !important; }
}

/* Show only on mobile */
@media (min-width: 768px) {
    .show-mobile-only { display: none !important; }
}

/* ==========================================
   ANIMATIONS & KEYFRAMES
   ========================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

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

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

@keyframes slideInLeft {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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

.animate-fadeIn {
    animation: fadeIn var(--transition-base) var(--ease-out);
}

.animate-slideInUp {
    animation: slideInUp var(--transition-base) var(--ease-out);
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ==========================================
   ACCESSIBILITY 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-width: 0;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

@media print {
    body {
        background: white;
        color: black;
    }
    
    .no-print {
        display: none !important;
    }
}