/**
 * ============================================
 *  WINKSTER GLOBAL DESIGN SYSTEM
 *  Centralized Theme Variables & Tokens
 * ============================================
 *  Usage: Include this file FIRST in all pages.
 *  Theme is controlled via `data-theme` attribute on <html>
 */

/* ========================================
   1. ROOT VARIABLES - DARK THEME (Default)
   ======================================== */
:root {
    /* === Color Palette === */
    --color-primary: #E94057;
    --color-primary-light: #FF6B81;
    --color-primary-dark: #C4324A;
    --color-primary-rgb: 233, 64, 87;

    --color-secondary: #8A2387;
    --color-secondary-light: #A855F7;

    --color-accent: #F59E0B;
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* === Gradient Presets === */
    --gradient-primary: linear-gradient(135deg, #E94057 0%, #8A2387 100%);
    --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FDB931 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

    /* === Typography === */
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Outfit', 'Plus Jakarta Sans', sans-serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 1.875rem;
    /* 30px */
    --font-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* === Spacing Scale === */
    --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 */

    /* === Border Radius === */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;

    /* === Shadows === */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(233, 64, 87, 0.3);

    /* === Transitions === */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-theme: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* === Z-Index Scale === */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* === Layout === */
    --sidebar-width: 280px;
    --sidebar-collapsed: 80px;
    --header-height: 70px;
    --container-max: 1200px;
}

/* ========================================
   2. DARK THEME SEMANTIC TOKENS (Default)
   ======================================== */
:root,
[data-theme="dark"] {
    /* Background Colors */
    --bg-body: #050505;
    --bg-surface: #0A0A0B;
    --bg-elevated: #121215;
    --bg-card: #1A1A1F;
    --bg-card-hover: #222228;
    --bg-input: #1A1A1F;
    --bg-overlay: rgba(0, 0, 0, 0.8);

    /* Glass/Blur Effects */
    --bg-glass: rgba(20, 20, 25, 0.7);
    --bg-glass-border: rgba(255, 255, 255, 0.08);
    --bg-glass-shine: rgba(255, 255, 255, 0.1);

    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --text-disabled: #52525B;
    --text-inverse: #18181B;
    --text-link: var(--color-primary-light);
    --text-link-hover: var(--color-primary);

    /* Border Colors */
    --border-default: #27272A;
    --border-muted: #1F1F23;
    --border-focus: var(--color-primary);

    /* Component Specific */
    --sidebar-bg: var(--bg-surface);
    --header-bg: var(--bg-glass);
    --modal-bg: var(--bg-card);
    --tooltip-bg: #27272A;
    --tooltip-text: #FAFAFA;

    /* Button Variants */
    --btn-primary-bg: var(--gradient-primary);
    --btn-primary-text: #FFFFFF;
    --btn-secondary-bg: transparent;
    --btn-secondary-border: var(--border-default);
    --btn-secondary-text: var(--text-secondary);
    --btn-ghost-hover: rgba(255, 255, 255, 0.1);

    /* Form Controls */
    --input-bg: var(--bg-input);
    --input-border: var(--border-default);
    --input-border-focus: var(--color-primary);
    --input-text: var(--text-primary);
    --input-placeholder: var(--text-muted);

    /* Scrollbar */
    --scrollbar-track: var(--bg-surface);
    --scrollbar-thumb: #3F3F46;
    --scrollbar-thumb-hover: #52525B;

    /* Ambient Gradients (Background Accents) */
    --ambient-1: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
    --ambient-2: radial-gradient(circle at 90% 80%, rgba(233, 64, 87, 0.1) 0%, transparent 40%);
}

/* ========================================
   3. LIGHT THEME SEMANTIC TOKENS
   ======================================== */
[data-theme="light"] {
    /* Background Colors */
    --bg-body: #F8FAFC;
    --bg-surface: #FFFFFF;
    --bg-elevated: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F1F5F9;
    --bg-input: #F1F5F9;
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Glass/Blur Effects */
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-glass-border: rgba(0, 0, 0, 0.08);
    --bg-glass-shine: rgba(255, 255, 255, 0.5);

    /* Text Colors */
    --text-primary: #18181B;
    --text-secondary: #52525B;
    --text-muted: #71717A;
    --text-disabled: #A1A1AA;
    --text-inverse: #FFFFFF;
    --text-link: var(--color-primary);
    --text-link-hover: var(--color-primary-dark);

    /* Border Colors */
    --border-default: #E4E4E7;
    --border-muted: #F4F4F5;
    --border-focus: var(--color-primary);

    /* Component Specific */
    --sidebar-bg: var(--bg-surface);
    --header-bg: var(--bg-glass);
    --modal-bg: var(--bg-card);
    --tooltip-bg: #18181B;
    --tooltip-text: #FAFAFA;

    /* Button Variants */
    --btn-primary-bg: var(--gradient-primary);
    --btn-primary-text: #FFFFFF;
    --btn-secondary-bg: transparent;
    --btn-secondary-border: var(--border-default);
    --btn-secondary-text: var(--text-secondary);
    --btn-ghost-hover: rgba(0, 0, 0, 0.05);

    /* Form Controls */
    --input-bg: var(--bg-input);
    --input-border: var(--border-default);
    --input-border-focus: var(--color-primary);
    --input-text: var(--text-primary);
    --input-placeholder: var(--text-muted);

    /* Scrollbar */
    --scrollbar-track: #F1F5F9;
    --scrollbar-thumb: #CBD5E1;
    --scrollbar-thumb-hover: #94A3B8;

    /* Shadows - Lighter for light mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);

    /* Ambient Gradients (Background Accents) */
    --ambient-1: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
    --ambient-2: radial-gradient(circle at 90% 80%, rgba(233, 64, 87, 0.06) 0%, transparent 40%);
}

/* ========================================
   4. GLOBAL RESETS & BASE STYLES
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* Ambient Background Layer */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ambient-1), var(--ambient-2);
    pointer-events: none;
    z-index: -1;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

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

/* Links */
a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-link-hover);
}

/* ========================================
   5. UTILITY CLASSES
   ======================================== */
/* Text Colors */
.text-primary {
    color: var(--text-primary) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-accent {
    color: var(--color-primary) !important;
}

.text-success {
    color: var(--color-success) !important;
}

.text-error {
    color: var(--color-error) !important;
}

/* Background Colors */
.bg-body {
    background-color: var(--bg-body) !important;
}

.bg-surface {
    background-color: var(--bg-surface) !important;
}

.bg-card {
    background-color: var(--bg-card) !important;
}

.bg-elevated {
    background-color: var(--bg-elevated) !important;
}

/* Gradients */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-gold {
    background: var(--gradient-gold) !important;
}

/* Glass Effect */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--bg-glass-border);
}

/* Border Utilities */
.border {
    border: 1px solid var(--border-default);
}

.border-muted {
    border: 1px solid var(--border-muted);
}

.rounded-sm {
    border-radius: var(--radius-sm);
}

.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

/* Shadow Utilities */
.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);
}

/* ========================================
   6. COMPONENT BASE STYLES
   ======================================== */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border: 1px solid var(--btn-secondary-border);
}

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

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

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

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
}

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

/* Form Inputs */
.input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
textarea,
select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--input-text);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-lg);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus,
input:focus,
textarea:focus,
select:focus {
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

.input::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--input-placeholder);
}

/* Labels */
label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

/* ========================================
   7. THEME TRANSITION ANIMATIONS
   ======================================== */
/* Smooth transition for all themed elements */
body,
.sidebar,
.card,
.btn,
.input,
input,
textarea,
select,
.modal,
.nav-item,
header,
footer,
main,
aside {
    transition:
        background-color var(--transition-theme),
        border-color var(--transition-theme),
        color var(--transition-theme),
        box-shadow var(--transition-theme);
}

/* Disable transitions during theme switch to prevent flicker */
.theme-transitioning * {
    transition: none !important;
}

/* ========================================
   8. PRINT STYLES
   ======================================== */
@media print {
    :root {
        --bg-body: white;
        --text-primary: black;
    }

    body::before {
        display: none;
    }
}