/* ===== MINIMAL & PROFESSIONAL UI DESIGN ===== */

/* CSS Custom Properties - Enhanced */
:root {
    /* Colors - Minimal Palette */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary: #64748b;
    --success: #059669;
    --success-hover: #047857;
    --success-light: #d1fae5;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --danger-light: #fee2e2;
    --warning: #d97706;
    --warning-light: #fed7aa;
    --info: #0ea5e9;
    --info-light: #e0f2fe;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Semantic Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-inverse: var(--white);
    
    /* Background Colors */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --bg-accent: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    
    /* Border Colors */
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);
    --border-dark: var(--gray-400);
    
    /* Shadows - Enhanced */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --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;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 100ms ease-in-out;
    --transition: 150ms ease-in-out;
    --transition-slow: 250ms ease-in-out;
    
    /* 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;
    --z-toast: 1080;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    background: 
        /* Professional gradient background */
        linear-gradient(135deg, 
            #f8fafc 0%, 
            #e2e8f0 25%, 
            #f1f5f9 50%, 
            #e2e8f0 75%, 
            #f8fafc 100%
        ),
        /* Subtle overlay pattern */
        radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(37, 99, 235, 0.01) 0%, transparent 50%);
    background-size: 100% 100%, 300px 300px, 400px 400px, 250px 250px;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: var(--font-weight-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #223f7e 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

/* Enhanced Container with Increased Width */
.container {
    max-width: 60%;
    margin: 0 auto;
    padding: var(--space-6);
    min-height: 100vh;
    position: relative;
}

.container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        /* Subtle professional pattern */
        radial-gradient(circle at 25% 25%, rgba(37, 99, 235, 0.02) 0%, transparent 25%),
        radial-gradient(circle at 75% 75%, rgba(37, 99, 235, 0.015) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.01) 0%, transparent 30%),
        /* Clean grid overlay */
        linear-gradient(90deg, rgba(37, 99, 235, 0.01) 1px, transparent 1px),
        linear-gradient(rgba(37, 99, 235, 0.01) 1px, transparent 1px);
    background-size: 
        200px 200px, 
        250px 250px, 
        300px 300px,
        50px 50px,
        50px 50px;
    pointer-events: none;
    z-index: -1;
}

.container::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        /* Professional glass effect */
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.05) 0%, 
            rgba(255, 255, 255, 0.02) 25%, 
            rgba(255, 255, 255, 0.01) 50%, 
            rgba(255, 255, 255, 0.02) 75%, 
            rgba(255, 255, 255, 0.05) 100%
        );
    backdrop-filter: blur(0.5px);
    pointer-events: none;
    z-index: -1;
}

/* Enhanced Header */
.header {
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    margin-bottom: var(--space-8);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--success), var(--primary));
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

.header h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    text-align: center;
    position: relative;
}

.header h1::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: var(--radius-sm);
}

.session-info {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

#sessionId {
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    background: var(--bg-tertiary);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-light);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    position: relative;
    transition: all var(--transition);
}

#sessionId:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-medium);
}

.status-active {
    background: var(--success);
    color: var(--text-inverse);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.status-active::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: statusShine 2s infinite;
}

@keyframes statusShine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.status-expired {
    background: var(--danger);
    color: var(--text-inverse);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm);
}

/* Enhanced Cards with Glassmorphism */
.welcome-card,
.question-form-card,
.expired-card,
.admin-controls,
.questions-section {
    background: rgb(249, 249, 249) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    margin-bottom: var(--space-8);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    transition: all var(--transition-slow);
    overflow: hidden;
}

.welcome-card:hover,
.question-form-card:hover,
.questions-section:hover {
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.4);
}

.welcome-card::before,
.question-form-card::before,
.questions-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 25%, 
        rgba(255, 255, 255, 0.05) 50%, 
        transparent 75%, 
        rgba(255, 255, 255, 0.1) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.welcome-card:hover::before,
.question-form-card:hover::before,
.questions-section:hover::before {
    opacity: 1;
}

.welcome-card {
    text-align: center;
    background: rgba(255, 255, 255, 0.3);
}

.welcome-card h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    position: relative;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.welcome-card h2::before {
    content: '✨';
    margin-right: var(--space-3);
    font-size: var(--font-size-3xl);
    animation: sparkle 2s ease-in-out infinite;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.welcome-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-10);
    font-size: var(--font-size-xl);
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.question-form-card {
    border-left: 4px solid rgba(37, 99, 235, 0.6);
}

.question-form-card h3 {
    margin-bottom: var(--space-8);
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.question-form-card h3::before {
    content: '💭';
    font-size: var(--font-size-3xl);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.join-session {
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-light);
    position: relative;
}

.join-session::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.join-session p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
    text-align: center;
}

.create-session-password {
    margin-top: var(--space-6);
    margin-bottom: var(--space-6);
}

/* Enhanced Form Elements */
.input,
.textarea {
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: all var(--transition);
    background: var(--bg-primary);
    font-family: inherit;
    color: var(--text-primary);
    position: relative;
}

.input:focus,
.textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.input:hover:not(:focus),
.textarea:hover:not(:focus) {
    border-color: var(--border-dark);
}

.textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-4);
    gap: var(--space-4);
}

.char-count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
    padding: var(--space-1) var(--space-2);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

/* Enhanced Buttons */
.btn {
    padding: var(--space-4) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: inherit;
    min-height: 44px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--primary);
}

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--danger);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--danger);
}

.btn-danger:hover {
    background: var(--danger-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled::before {
    display: none;
}

/* ===== ENHANCED ADMIN CONTROLS ===== */
.admin-controls {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--gray-50) 100%);
    border: 1px solid var(--primary);
    border-left: 4px solid var(--primary);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.admin-controls::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--success), var(--primary));
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

.admin-controls h4 {
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.admin-controls h4::before {
    content: '🔧';
    font-size: var(--font-size-xl);
    animation: toolRotate 3s ease-in-out infinite;
}

@keyframes toolRotate {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

.admin-controls h4::after {
    content: 'ADMIN';
    background: var(--primary);
    color: var(--text-inverse);
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05em;
    margin-left: auto;
    box-shadow: var(--shadow-sm);
}

.admin-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.admin-controls-buttons {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    flex-wrap: wrap;
}

.admin-controls .btn {
    position: relative;
    overflow: hidden;
    flex: 1;
    min-width: 150px;
}

/* ===== ENHANCED QUESTION ADMIN ACTIONS ===== */
.question-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    flex-wrap: wrap;
}

.admin-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    padding: var(--space-3);
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition);
}

.admin-actions:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

/* ===== ENHANCED MARK ANSWERED BUTTON ===== */
.admin-btn {
    padding: var(--space-3) var(--space-4);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition);
    text-transform: none;
    letter-spacing: 0;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    overflow: hidden;
    min-width: 120px;
    justify-content: center;
}

/* Mark Answered Button - Default State */
.admin-btn:not(.answered) {
    background: var(--success);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--success);
}

.admin-btn:not(.answered):hover {
    background: var(--success-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.admin-btn:not(.answered)::before {
    content: '✓';
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

/* Mark Answered Button - Answered State */
.admin-btn.answered {
    background: linear-gradient(135deg, var(--success-light), var(--bg-primary));
    color: var(--success-hover);
    border: 1px solid var(--success);
    cursor: default;
    transform: none !important;
    box-shadow: var(--shadow-inner);
}

.admin-btn.answered::before {
    content: '✅';
    font-size: var(--font-size-lg);
}

.admin-btn.answered::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(5, 150, 105, 0.1) 50%, transparent 70%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Delete Button - Enhanced */
.delete-btn {
    background: rgb(246, 32, 32) !important;
    color: var(--text-inverse) !important;
    border: 1px solid var(--danger);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 100px;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.delete-btn:hover {
    background: rgb(207, 3, 3)!important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.delete-btn::before {
    content: '🗑️';
    font-size: var(--font-size-base);
}

/* Enhanced Questions Section with Better Layout */
.questions-section {
    border-left: 4px solid rgba(14, 165, 233, 0.6);
}

.questions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

.questions-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, rgba(14, 165, 233, 0.8), transparent);
    border-radius: var(--radius-sm);
}

.questions-header h3 {
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.questions-header h3::before {
    content: '💬';
    font-size: var(--font-size-3xl);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.sort-info span {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xs);
}

.questions-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--space-6);
}

.no-questions {
    text-align: center;
    padding: var(--space-12);
    color: var(--text-muted);
    font-size: var(--font-size-lg);
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-radius: var(--radius-xl);
    border: 2px dashed var(--border-medium);
}

.no-questions::before {
    content: '🤔';
    display: block;
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
    animation: bounce 2s ease-in-out infinite;
}

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

/* Enhanced Question Cards with Better Layout */
.question-card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    border: 1px solid rgba(255, 255, 255, 0.25);
    transition: all var(--transition-slow);
    position: relative;
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.1),
        0 1px 4px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.6s ease-out;
    overflow: hidden;
}

.question-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%, 
        rgba(255, 255, 255, 0.05) 100%
    );
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.question-card:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.15),
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.4);
}

.question-card:hover::before {
    opacity: 1;
}

.question-card.answered {
    background: rgba(209, 250, 229, 0.3);
    border-color: rgba(5, 150, 105, 0.4);
    opacity: 0.9;
    order: 999;
    margin-top: var(--space-3);
}

.question-card.answered:hover {
    background: rgba(209, 250, 229, 0.4);
    transform: translateY(-3px);
    opacity: 1;
}

.question-card.answered .question-text {
    text-decoration: line-through;
    color: var(--text-muted);
}



/* Add a subtle divider before answered questions */
.question-card.answered:first-of-type {
    position: relative;
    margin-top: var(--space-8);
}

.question-card.answered:first-of-type::after {
    content: 'Answered Questions';
    position: absolute;
    top: calc(-1 * var(--space-6));
    left: 0;
    right: 0;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: var(--font-weight-semibold);
    background: var(--bg-secondary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xs);
}

.question-text {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    word-wrap: break-word;
    font-weight: var(--font-weight-medium);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.question-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

/* Enhanced Vote Section */
.vote-section {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.vote-btn {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-4) var(--space-6);
    cursor: pointer;
    transition: all var(--transition);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.vote-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 
        0 6px 16px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.vote-btn.voted {
    background: rgba(37, 99, 235, 0.8);
    color: var(--text-inverse);
    border-color: rgba(37, 99, 235, 0.9);
    box-shadow: 
        0 4px 12px rgba(37, 99, 235, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.vote-count {
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.question-timestamp {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.question-card.answered .question-timestamp {
    top: var(--space-12);
}

/* Enhanced Toast Notifications */
.toast {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-medium);
    z-index: var(--z-toast);
    transform: translateX(120%);
    transition: all var(--transition-slow);
    font-weight: var(--font-weight-medium);
    max-width: 400px;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: var(--success);
    color: var(--text-inverse);
    border-color: var(--success);
}

.toast.error {
    background: var(--danger);
    color: var(--text-inverse);
    border-color: var(--danger);
}

.toast.warning {
    background: var(--warning);
    color: var(--text-inverse);
    border-color: var(--warning);
}

.toast.info {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

/* Enhanced Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(8px);
}

.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-lg);
}

.loading-overlay p {
    color: var(--text-inverse);
    font-size: var(--font-size-lg);
    text-align: center;
    font-weight: var(--font-weight-medium);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Enhanced Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-slow);
    backdrop-filter: blur(8px);
}

.modal.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-medium);
    padding: var(--space-10);
    text-align: center;
    max-width: 450px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    transform: translateY(-20px) scale(0.95);
    transition: all var(--transition-slow);
}

.modal.show .modal-content {
    transform: translateY(0) scale(1);
}

.modal-content p {
    margin-bottom: var(--space-8);
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: var(--font-weight-medium);
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.modal-actions button {
    min-width: 120px;
}

.modal.hidden {
    display: none;
}

/* Screen Management */
.screen {
    display: block;
}

.screen.hidden {
    display: none;
}

/* Enhanced Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.question-card {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.vote-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Responsive Design for Enhanced Layout */
@media (max-width: 1400px) {
    .container {
        max-width: 1000px;
    }
    
    .questions-list {
        grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 900px;
    }
    
    .questions-list {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--space-4);
        max-width: 100%;
    }
    
    .welcome-card,
    .question-form-card,
    .expired-card,
    .admin-controls,
    .questions-section {
        padding: var(--space-6);
        margin-bottom: var(--space-6);
    }
    
    .header {
        padding: var(--space-6);
    }
    
    .header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .welcome-card h2 {
        font-size: var(--font-size-2xl);
    }
    
    .welcome-card p {
        font-size: var(--font-size-lg);
    }
    
    .question-form-card h3,
    .questions-header h3 {
        font-size: var(--font-size-xl);
    }
    
    .questions-list {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .questions-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    
    .question-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }
    
    .question-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .admin-controls .btn {
        width: 100%;
        margin-right: 0;
        justify-content: center;
    }
    
    .admin-controls-buttons {
        flex-direction: column;
        gap: var(--space-8);
    }
    
    .admin-controls-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-actions {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .admin-btn,
    .delete-btn {
        flex: 1;
        min-width: 120px;
    }
    
    .vote-section {
        width: 100%;
        justify-content: space-between;
    }
    
    .toast {
        right: var(--space-4);
        left: var(--space-4);
        transform: translateY(-120%);
    }
    
    .toast.show {
        transform: translateY(0);
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .modal-actions button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--space-3);
    }
    
    .welcome-card,
    .question-form-card,
    .expired-card,
    .admin-controls,
    .questions-section {
        padding: var(--space-4);
    }
    
    .session-info {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .form-footer {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
    }
    
    .question-timestamp {
        position: static;
        margin-bottom: var(--space-3);
        align-self: flex-start;
        display: inline-block;
        width: auto;
    }
    
    .question-card.answered .question-timestamp {
        position: static;
        margin-top: var(--space-3);
    }
    
    .admin-controls h4::after {
        display: none;
    }
    
    .modal-content {
        padding: var(--space-6);
    }
    
    .vote-btn,
    .vote-count {
        font-size: var(--font-size-sm);
        padding: var(--space-2) var(--space-3);
    }
    
    .question-text {
        font-size: var(--font-size-lg);
    }
}

/* Accessibility */
.btn:focus,
.input:focus,
.textarea:focus,
.vote-btn:focus,
.admin-btn:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-light: var(--gray-400);
        --border-medium: var(--gray-600);
    }
}

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