/*
Theme Name: VocabPress Premium
Theme URI: https://yoursite.com
Description: Premium vocabulary theme with Ortho-inspired design. Features enhanced gradients, animations, and professional polish built on GeneratePress.
Author: Your Name
Author URI: https://yoursite.com
Template: generatepress
Version: 2.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vocabpress-premium
Tags: education, vocabulary, learning, flashcards, premium, responsive
*/

/* Import the premium design system from vocab-theme */
/* This includes all Ortho-inspired enhancements */
@import url('https://fonts.googleapis.com/css2?family=Anek+Bangla:wght@400;500;600;700;800&family=Inter:wght@400;600;700;800&display=swap');
/*
Theme Name: VocabPress
Theme URI: https://yoursite.com
Description: A premium, colorful vocabulary learning theme built on GeneratePress. Features word posts with meanings, mnemonics, examples, flashcards, and word bank functionality.
Author: Your Name
Author URI: https://yoursite.com
Template: generatepress
Version: 1.1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vocabpress
Tags: education, vocabulary, learning, flashcards, colorful, responsive
*/

/* ==========================================================================
   CSS RESET & BASE STYLES
   ========================================================================== */

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

/* ==========================================================================
   PREMIUM COLOR PALETTE & DESIGN TOKENS
   ========================================================================== */

:root {
    /* Primary Colors */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    /* Secondary Colors */
    --secondary-50: #fdf2f8;
    --secondary-100: #fce7f3;
    --secondary-200: #fbcfe8;
    --secondary-300: #f9a8d4;
    --secondary-400: #f472b6;
    --secondary-500: #ec4899;
    --secondary-600: #db2777;
    --secondary-700: #be185d;
    --secondary-800: #9d174d;
    --secondary-900: #831843;
    
    /* Accent Colors */
    --accent-50: #ecfdf5;
    --accent-100: #d1fae5;
    --accent-200: #a7f3d0;
    --accent-300: #6ee7b7;
    --accent-400: #34d399;
    --accent-500: #10b981;
    --accent-600: #059669;
    --accent-700: #047857;
    --accent-800: #065f46;
    --accent-900: #064e3b;
    
    /* Status Colors */
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-overlay: rgba(15, 23, 42, 0.7);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Border Colors */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-success: linear-gradient(135deg, #0ba360 0%, #3cba92 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-ocean: linear-gradient(135deg, #2e3192 0%, #1bffff 100%);
    --gradient-purple: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-warm: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.4);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* 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);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    font-weight: 400;
    overflow-x: hidden;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-600);
}

strong {
    font-weight: 600;
    color: var(--text-primary);
}

/* Selection */
::selection {
    background: var(--primary-200);
    color: var(--primary-900);
}

::-moz-selection {
    background: var(--primary-200);
    color: var(--primary-900);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* Main Content Area */
.site-content {
    padding: var(--spacing-2xl) 0;
    min-height: 60vh;
}

.site-main {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .site-main {
        padding: 0 var(--spacing-lg);
    }
}

/* ==========================================================================
   PREMIUM WORD CARD DESIGN
   ========================================================================== */

.word-card {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.word-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.word-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-200);
}

/* Word Header Section */
.word-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--gray-100);
    position: relative;
}

.word-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.word-title-wrapper {
    flex: 1;
}

.word-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.word-pronunciation {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-lg);
    color: var(--text-secondary);
    font-style: italic;
    font-family: var(--font-mono);
    background: var(--primary-50);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-100);
    margin-top: var(--spacing-sm);
}

.word-pronunciation::before {
    content: '🔊';
    font-size: 1.2em;
}

/* Word Action Buttons */
.word-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    color: var(--primary-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    font-size: 1.3rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.btn-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary-50);
    transition: all var(--transition-base);
    transform: translate(-50%, -50%);
}

.btn-icon:hover::before {
    width: 100%;
    height: 100%;
}

.btn-icon:hover {
    border-color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon:active {
    transform: translateY(0);
    box-shadow: var(--shadow-xs);
}

.btn-icon.favorite {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border-color: transparent;
    color: white;
}

.btn-icon.favorite:hover {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
}

/* ==========================================================================
   PREMIUM WORD CONTENT SECTIONS
   ========================================================================== */

.word-section {
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out backwards;
}

.word-section:nth-child(2) { animation-delay: 0.1s; }
.word-section:nth-child(3) { animation-delay: 0.2s; }
.word-section:nth-child(4) { animation-delay: 0.3s; }

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

/* Section Labels */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.section-label:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.section-label.meaning {
    background: var(--gradient-primary);
    color: white;
}

.section-label.meaning::before {
    content: '📖';
    font-size: 1.2em;
}

.section-label.mnemonic {
    background: var(--gradient-secondary);
    color: white;
}

.section-label.mnemonic::before {
    content: '💡';
    font-size: 1.2em;
}

.section-label.example {
    background: var(--gradient-accent);
    color: white;
}

.section-label.example::before {
    content: '✍️';
    font-size: 1.2em;
}

/* Meaning Section */
.word-meaning {
    font-size: var(--text-xl);
    line-height: 1.8;
    color: var(--text-primary);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, 
        var(--primary-50) 0%, 
        rgba(255, 255, 255, 0) 100%);
    border-left: 5px solid var(--primary-500);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.word-meaning::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 10px;
    font-size: 6rem;
    color: var(--primary-100);
    font-family: Georgia, serif;
    line-height: 1;
    pointer-events: none;
}

/* Mnemonic Section */
.word-mnemonic {
    background: linear-gradient(135deg, 
        rgba(240, 147, 251, 0.1) 0%, 
        rgba(245, 87, 108, 0.1) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--secondary-200);
    font-size: var(--text-lg);
    line-height: 1.7;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.word-mnemonic::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.word-mnemonic:hover::before {
    opacity: 0.1;
}

.word-mnemonic .mnemonic-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Examples Section */
.word-examples {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.word-example-item {
    background: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--accent-500);
    font-size: var(--text-lg);
    line-height: 1.7;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.word-example-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-accent);
}

.word-example-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    background: var(--accent-50);
}

.word-example-item .example-number {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-500);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 700;
}

.word-example-item .example-text {
    padding-right: var(--spacing-2xl);
    display: block;
}

/* ==========================================================================
   PREMIUM IMAGE & VIDEO SECTIONS
   ========================================================================== */

.word-image-container {
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
    background: var(--gray-100);
}

.word-image-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(0, 0, 0, 0.3) 100%);
    z-index: 1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.word-image-container:hover::before {
    opacity: 1;
}

.word-image {
    width: 100%;
    height: auto;
    display: block;
    max-height: 500px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    background: linear-gradient(to top, 
        rgba(0, 0, 0, 0.7) 0%, 
        transparent 100%);
    color: white;
    transform: translateY(100%);
    transition: transform var(--transition-base);
    z-index: 2;
}

.word-image-container:hover .image-caption {
    transform: translateY(0);
}

/* Video Container */
.word-video-container {
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 16/9;
    background: var(--gray-900);
    position: relative;
}

.word-video-container::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-2xl);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

.word-video {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ==========================================================================
   PREMIUM 3D FLASHCARD SYSTEM
   ========================================================================== */

.flashcard-container {
    perspective: 1500px;
    margin: var(--spacing-3xl) auto;
    max-width: 700px;
    padding: var(--spacing-lg);
}

.flashcard {
    position: relative;
    width: 100%;
    height: 450px;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    cursor: pointer;
}

.flashcard.flipped {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

/* Front Side */
.flashcard-front {
    background: linear-gradient(135deg, 
        var(--primary-500) 0%, 
        var(--primary-700) 100%);
    color: white;
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.flashcard-front::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 70%);
    animation: rotate 20s linear infinite;
}

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

/* Back Side */
.flashcard-back {
    background: linear-gradient(135deg, 
        var(--secondary-500) 0%, 
        var(--secondary-700) 100%);
    color: white;
    transform: rotateY(180deg);
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.flashcard-back::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 70%);
}

/* Flashcard Content */
.flashcard-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 100%;
}

.flashcard-word {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--spacing-xl);
    line-height: 1.1;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

.flashcard-meaning {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    line-height: 1.6;
    opacity: 0.95;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.flashcard-pronunciation {
    font-size: var(--text-xl);
    opacity: 0.85;
    font-family: var(--font-mono);
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.flashcard-hint {
    margin-top: var(--spacing-2xl);
    font-size: var(--text-sm);
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: bounce 2s ease-in-out infinite;
}

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

/* Flashcard Navigation */
.flashcard-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    flex-wrap: wrap;
}

.flashcard-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    border: none;
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: var(--text-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.flashcard-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.6s ease;
    transform: translate(-50%, -50%);
}

.flashcard-btn:hover::before {
    width: 300%;
    height: 300%;
}

.flashcard-btn-prev {
    background: linear-gradient(135deg, 
        var(--gray-600) 0%, 
        var(--gray-700) 100%);
    color: white;
}

.flashcard-btn-prev::after {
    content: '←';
    margin-left: var(--spacing-sm);
}

.flashcard-btn-next {
    background: var(--gradient-primary);
    color: white;
}

.flashcard-btn-next::after {
    content: '→';
    margin-left: var(--spacing-sm);
}

.flashcard-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.flashcard-btn:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.flashcard-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Counter */
.flashcard-counter {
    text-align: center;
    margin-top: var(--spacing-xl);
    font-size: var(--text-xl);
    color: var(--text-secondary);
    font-weight: 700;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    display: inline-block;
    min-width: 200px;
}

.flashcard-counter .current {
    color: var(--primary-600);
    font-size: var(--text-2xl);
}

.flashcard-counter .total {
    color: var(--text-tertiary);
}

/* ==========================================================================
   Word Bank Styles
   ========================================================================== */

.word-bank {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.word-bank-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.word-bank-title {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.word-bank-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.word-bank-search {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    margin-bottom: 2rem;
    transition: border-color 0.3s ease;
}

.word-bank-search:focus {
    outline: none;
    border-color: var(--primary-color);
}

.word-bank-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.word-bank-item {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.word-bank-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.word-bank-item-word {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.word-bank-item-meaning {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.4;
}

.word-bank-item-meta {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.word-bank-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    background: var(--accent-color);
    color: white;
    font-weight: 600;
}

/* ==========================================================================
   Import Section
   ========================================================================== */

.import-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

.import-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.import-dropzone {
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    background: var(--bg-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

.import-dropzone:hover,
.import-dropzone.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.import-dropzone-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.import-dropzone-text {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 0.5rem;
}

.import-btn {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    margin-top: 1rem;
}

.import-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Progress & Statistics
   ========================================================================== */

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .word-title {
        font-size: 2rem;
    }
    
    .word-bank-grid {
        grid-template-columns: 1fr;
    }
    
    .flashcard-word {
        font-size: 2rem;
    }
    
    .flashcard-meaning {
        font-size: 1.2rem;
    }
    
    .word-card {
        padding: 1.5rem;
    }
    
    .progress-stats {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

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

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}

.gradient-bg {
    background: var(--gradient-1);
    color: white;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* ==========================================================================
   PREMIUM WORD BANK DESIGN
   ========================================================================== */

.word-bank {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-lg);
    margin: var(--spacing-2xl) 0;
}

.word-bank-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 3px solid var(--gray-100);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.word-bank-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.word-bank-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-50);
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary-100);
}

.stat-badge-value {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--primary-600);
}

.stat-badge-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-xs);
}

/* Search Box */
.word-bank-search {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xl);
    transition: all var(--transition-base);
    background: white;
    box-shadow: var(--shadow-sm);
}

.word-bank-search:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px var(--primary-50), var(--shadow-md);
    transform: translateY(-2px);
}

.word-bank-search::placeholder {
    color: var(--text-tertiary);
}

/* Filter Buttons */
.word-bank-filters {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--border-light);
    background: white;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
    color: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

/* Word Grid */
.word-bank-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.word-bank-item {
    background: linear-gradient(135deg, 
        rgba(99, 102, 241, 0.03) 0%, 
        rgba(118, 75, 162, 0.03) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-light);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.word-bank-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.word-bank-item:hover::before {
    transform: translateX(0);
}

.word-bank-item:hover {
    border-color: var(--primary-300);
    background: white;
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.word-bank-item-word {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--primary-600);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.word-bank-item-meaning {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.word-bank-item-meta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.word-bank-tag {
    font-size: var(--text-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    background: var(--accent-500);
    color: white;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-xs);
}

.word-bank-tag.difficulty-beginner {
    background: var(--success-color);
}

.word-bank-tag.difficulty-intermediate {
    background: var(--warning-color);
}

.word-bank-tag.difficulty-advanced {
    background: var(--error-color);
}

/* ==========================================================================
   PROGRESS & STATISTICS CARDS
   ========================================================================== */

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-3xl) 0;
}

.stat-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 2px solid var(--border-light);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-200);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

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

.stat-value {
    font-size: var(--text-5xl);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ==========================================================================
   BUTTONS & INTERACTIVE ELEMENTS
   ========================================================================== */

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-2xl);
    border: none;
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.6s ease;
    transform: translate(-50%, -50%);
}

.btn-primary:hover::before {
    width: 300%;
    height: 300%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background: white;
    color: var(--primary-600);
    border: 2px solid var(--primary-500);
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-xl);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--primary-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   LOADING & EMPTY STATES
   ========================================================================== */

.loading-state,
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-tertiary);
}

.loading-state .spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--primary-100);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-xl);
}

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

.empty-state-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
}

.empty-state-text {
    font-size: var(--text-xl);
    color: var(--text-secondary);
}

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

@media (max-width: 1024px) {
    .word-bank-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --text-4xl: 2rem;
        --text-3xl: 1.75rem;
        --text-2xl: 1.5rem;
    }
    
    .word-card {
        padding: var(--spacing-xl);
    }
    
    .word-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .word-bank-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .flashcard {
        height: 380px;
    }
    
    .flashcard-word {
        font-size: clamp(2rem, 10vw, 3rem);
    }
    
    .flashcard-meaning {
        font-size: clamp(1.1rem, 4vw, 1.5rem);
    }
    
    .progress-stats {
        grid-template-columns: 1fr;
    }
    
    .word-bank-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .word-bank-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        font-size: var(--text-xs);
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .site-main {
        padding: 0 var(--spacing-sm);
    }
    
    .word-card {
        padding: var(--spacing-lg);
    }
    
    .flashcard-container {
        padding: 0;
    }
    
    .flashcard {
        height: 320px;
    }
    
    .flashcard-front,
    .flashcard-back {
        padding: var(--spacing-xl);
    }
    
    .flashcard-nav {
        flex-direction: column;
        width: 100%;
    }
    
    .flashcard-btn {
        width: 100%;
    }
    
    .word-actions {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ==========================================================================
   ACCESSIBILITY & FOCUS STATES
   ========================================================================== */

.btn-icon:focus,
.btn-primary:focus,
.btn-secondary:focus,
.filter-btn:focus,
.word-bank-search:focus {
    outline: 3px solid var(--primary-300);
    outline-offset: 2px;
}

.word-bank-item:focus {
    outline: 3px solid var(--primary-300);
    outline-offset: 4px;
}

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

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

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

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.gradient-bg {
    background: var(--gradient-primary);
    color: white;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* ============================================================================
   VOCABPRESS PREMIUM - ORTHO-INSPIRED DESIGN
   ============================================================================ */

/* Enhanced Color System from Ortho */
:root {
    /* Base Colors (keep your existing ones) */
    --primary-color: #3730a3;
    --primary-dark: #1e1b4b;
    --secondary-color: #ec4899;
    --accent-color: #10b981;
    
    /* New: Enhanced Palette */
    --indigo-50: #eef2ff;
    --indigo-100: #e0e7ff;
    --indigo-600: #4f46e5;
    --indigo-700: #4338ca;
    --indigo-800: #3730a3;
    
    --rose-50: #fff1f2;
    --rose-600: #e11d48;
    --rose-700: #be123c;
    
    --emerald-50: #ecfdf5;
    --emerald-600: #059669;
    --emerald-700: #047857;
    
    --amber-50: #fffbeb;
    --amber-500: #f59e0b;
    --amber-600: #d97706;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* Premium Word Card Enhancement */
.word-card {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-light);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

/* Decorative Top Border */
.word-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.word-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-200);
}

/* Enhanced Word Title */
.word-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

/* Pronunciation Badge - Ortho Style */
.word-pronunciation {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-base);
    color: var(--text-secondary);
    font-style: italic;
    font-family: 'Courier New', monospace;
    background: rgba(99, 102, 241, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    border: 2px solid rgba(99, 102, 241, 0.2);
    margin-top: var(--spacing-sm);
}

/* Premium Section Labels */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.section-label::before {
    font-size: 1.3em;
}

.section-label.meaning::before { content: '📖'; }
.section-label.mnemonic::before { content: '💡'; }
.section-label.example::before { content: '✍️'; }

/* Enhanced Meaning Section */
.word-meaning {
    font-size: var(--text-xl);
    line-height: 1.8;
    color: var(--text-primary);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, 
        rgba(99, 102, 241, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 100%);
    border-left: 4px solid var(--primary-500);
    border-radius: var(--radius-lg);
    position: relative;
}

/* Mnemonic - Premium Style */
.word-mnemonic {
    background: linear-gradient(135deg, 
        rgba(236, 72, 153, 0.08) 0%, 
        rgba(245, 87, 108, 0.08) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(236, 72, 153, 0.2);
    font-size: var(--text-lg);
    line-height: 1.7;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.word-mnemonic::before {
    content: '💡';
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    font-size: 2rem;
    opacity: 0.3;
}

/* Example Items - Card Style */
.word-example-item {
    background: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--accent-500);
    font-size: var(--text-lg);
    line-height: 1.7;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
}

.word-example-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    background: var(--accent-50);
}

.word-example-item::before {
    content: '→';
    position: absolute;
    left: var(--spacing-md);
    color: var(--accent-500);
    font-weight: bold;
}

.word-example-item .example-text {
    padding-left: var(--spacing-xl);
}

/* Flashcard Premium Styling */
.flashcard {
    background: linear-gradient(135deg, 
        var(--primary-500) 0%, 
        var(--primary-700) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.flashcard::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.flashcard-word {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: white;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

/* Word Bank Grid - Enhanced */
.word-bank-item {
    background: linear-gradient(135deg, 
        rgba(99, 102, 241, 0.03) 0%, 
        rgba(118, 75, 162, 0.03) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-light);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.word-bank-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.word-bank-item:hover::before {
    transform: translateX(0);
}

.word-bank-item:hover {
    border-color: var(--primary-300);
    background: white;
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Progress Stats - Premium Cards */
.stat-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 2px solid var(--border-light);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-200);
}

.stat-value {
    font-size: var(--text-5xl);
    font-weight: 900;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

/* Buttons - Premium Style */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-2xl);
    border: none;
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.6s ease;
    transform: translate(-50%, -50%);
}

.btn-primary:hover::before {
    width: 300%;
    height: 300%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* Icon Buttons - Ortho Style */
.btn-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    color: var(--primary-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    font-size: 1.3rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.btn-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary-50);
    transition: all var(--transition-base);
    transform: translate(-50%, -50%);
}

.btn-icon:hover::before {
    width: 100%;
    height: 100%;
}

.btn-icon:hover {
    border-color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Animations from Ortho */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

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

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--gray-200) 0%,
        var(--gray-100) 50%,
        var(--gray-200) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .word-card {
        padding: var(--spacing-xl);
    }
    
    .word-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .flashcard-word {
        font-size: clamp(2rem, 10vw, 3rem);
    }
}

/* Accessibility */
*:focus-visible {
    outline: 3px solid var(--primary-300);
    outline-offset: 2px;
    border-radius: 4px;
}

@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 {
    .btn-icon,
    .btn-primary,
    .animate-float {
        display: none !important;
    }
    
    .word-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}


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

@media print {
    .word-actions,
    .flashcard-nav,
    .word-bank-filters,
    .word-bank-search {
        display: none;
    }
    
    .word-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}