/* ============================================
   KUDENA TOOLS - MAIN STYLESHEET
   Theme: Dark/Light with Black-White-Orange
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Dark Theme (Default) */
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1e1e1e;
    --bg-hover: #252525;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #6b6b6b;
    
    --accent-primary: #ff6b00;
    --accent-secondary: #ff8533;
    --accent-glow: rgba(255, 107, 0, 0.3);
    
    --border-color: #2a2a2a;
    --border-hover: #3a3a3a;
    
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ff6b00 0%, #ff8533 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    --gradient-card: linear-gradient(145deg, #1e1e1e 0%, #141414 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 107, 0, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #eeeeee;
    --bg-card: #ffffff;
    --bg-hover: #e8e8e8;
    
    --text-primary: #0a0a0a;
    --text-secondary: #4a4a4a;
    --text-muted: #8a8a8a;
    
    --border-color: #e0e0e0;
    --border-hover: #d0d0d0;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition-normal), color var(--transition-normal);
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

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

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

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

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.nav-link i {
    font-size: 1rem;
}

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

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--accent-primary);
    background: var(--bg-hover);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.user-menu-btn:hover {
    background: var(--bg-hover);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1001;
}

.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.dropdown-item.logout {
    color: var(--error);
}

.dropdown-item.logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

.user-dropdown hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--space-sm) 0;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-card);
    z-index: 2000;
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.mobile-menu-links {
    flex: 1;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.mobile-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.mobile-link:hover,
.mobile-link.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.mobile-menu-actions {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 107, 0, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

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

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.85rem;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-label span {
    color: var(--error);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    margin-top: var(--space-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-error {
    margin-top: var(--space-xs);
    font-size: 0.85rem;
    color: var(--error);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-check-input {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.form-check-label {
    color: var(--text-secondary);
    cursor: pointer;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    position: fixed;
    top: 90px;
    right: var(--space-lg);
    max-width: 400px;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    box-shadow: var(--shadow-lg);
    z-index: 1500;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--info);
    color: var(--info);
}

.alert-close {
    margin-left: auto;
    color: inherit;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
}

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

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Tool Card */
.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.tool-card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--accent-primary);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-normal);
}

.tool-card:hover .tool-card-icon {
    background: var(--gradient-primary);
    color: white;
}

.tool-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.tool-card-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.tool-card-category {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Prompt Card */
.prompt-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.prompt-card-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background: var(--bg-tertiary);
}

.prompt-card-video {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
}

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

.prompt-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.prompt-card-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.prompt-card-actions {
    display: flex;
    gap: var(--space-sm);
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--error);
    color: white;
}

.modal-body {
    padding: var(--space-xl);
    text-align: center;
}

.modal-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 2.5rem;
    color: var(--accent-primary);
}

.modal-body p {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
}

.modal-subtext {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-footer {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.modal-footer .btn {
    flex: 1;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: auto;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

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

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

.social-link:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-credit i {
    color: var(--error);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    padding: calc(70px + var(--space-3xl)) 0 var(--space-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 107, 0, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 107, 0, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.hero-badge span {
    color: var(--accent-primary);
    font-weight: 600;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    margin-top: var(--space-3xl);
}

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

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

.hero-stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============================================
   SEARCH & FILTER
   ============================================ */
.search-section {
    padding: var(--space-xl) 0;
}

.search-container {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.search-input-wrapper {
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--space-lg) var(--space-lg) var(--space-lg) 3.5rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.search-icon {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.25rem;
}

.filter-tabs {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-lg);
}

.filter-tab {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

/* ============================================
   GRID LAYOUTS
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.prompts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   AUTH PAGES
   ============================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(70px + var(--space-xl)) var(--space-lg) var(--space-xl);
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 107, 0, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 107, 0, 0.03) 0%, transparent 50%);
}

.auth-card {
    width: 100%;
    max-width: 450px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-header .logo-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent-primary);
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ============================================
   TOOL PAGE
   ============================================ */
.tool-page {
    padding: calc(70px + var(--space-xl)) 0 var(--space-xl);
    min-height: 100vh;
}

.tool-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.tool-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.tool-header-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto var(--space-lg);
    box-shadow: var(--shadow-glow);
}

.tool-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.tool-header p {
    color: var(--text-secondary);
}

.tool-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

/* ============================================
   ADMIN PANEL
   ============================================ */
.admin-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--space-lg);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    overflow-y: auto;
}

.admin-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    padding-bottom: var(--space-lg);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.admin-nav-item i {
    width: 24px;
    text-align: center;
}

.admin-main {
    margin-left: 260px;
    padding: var(--space-xl);
}

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

.admin-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
}

.stat-info p {
    color: var(--text-secondary);
}

/* ============================================
   TABLE
   ============================================ */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.table tr:hover td {
    background: var(--bg-hover);
}

.table td {
    color: var(--text-secondary);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.badge-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

/* ============================================
   LOADING
   ============================================ */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.empty-description {
    color: var(--text-secondary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-layout {
        grid-template-columns: 1fr;
    }
    
    .admin-sidebar {
        display: none;
    }
    
    .admin-main {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .tools-grid,
    .prompts-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-footer {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .auth-card {
        padding: var(--space-lg);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.animate-fadeIn {
    animation: fadeIn 0.5s ease;
}

.animate-slideUp {
    animation: slideUp 0.5s ease;
}

/* Tool specific styles */
.tool-result {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
    font-family: 'Courier New', monospace;
    word-break: break-all;
}

.copy-btn {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.result-container {
    position: relative;
}

/* Calculator specific */
.calculator {
    max-width: 400px;
    margin: 0 auto;
}

.calculator-display {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    text-align: right;
}

.calculator-display .previous {
    color: var(--text-muted);
    font-size: 0.9rem;
    min-height: 1.5em;
}

.calculator-display .current {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 600;
    word-break: break-all;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.calc-btn {
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.calc-btn.operator {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.calc-btn.operator:hover {
    background: var(--accent-secondary);
}

.calc-btn.span-2 {
    grid-column: span 2;
}

/* Color picker specific */
.color-picker-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.color-input {
    width: 80px;
    height: 50px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
}

.color-preview {
    flex: 1;
    height: 50px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.color-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.color-value-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.color-value-group label {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Pomodoro specific */
.pomodoro-timer {
    text-align: center;
}

.timer-display {
    font-size: 6rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    text-shadow: 0 0 30px var(--accent-glow);
}

.timer-modes {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.timer-mode {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.timer-mode:hover,
.timer-mode.active {
    background: var(--gradient-primary);
    border-color: var(--accent-primary);
    color: white;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.timer-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-fast);
}

.timer-btn:hover {
    transform: scale(1.1);
}

/* Todo specific */
.todo-input-wrapper {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.todo-input {
    flex: 1;
}

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

.todo-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.todo-item:hover {
    border-color: var(--border-hover);
}

.todo-item.completed .todo-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.todo-checkbox {
    width: 22px;
    height: 22px;
    accent-color: var(--accent-primary);
}

.todo-text {
    flex: 1;
    color: var(--text-primary);
}

.todo-delete {
    color: var(--error);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.todo-item:hover .todo-delete {
    opacity: 1;
}

/* Stopwatch specific */
.stopwatch-display {
    font-size: 4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
}

.stopwatch-laps {
    max-height: 300px;
    overflow-y: auto;
    margin-top: var(--space-lg);
}

.stopwatch-lap {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}