:root {
    /* Modern Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #8b5cf6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Dark Mode Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-surface: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color);
    --shadow-xl: 0 20px 25px -5px var(--shadow-color);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Modern Header with Glass Effect */
.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-normal);
    position: relative;
}

.logo::before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: var(--primary-gradient);
    transition: var(--transition-normal);
}

.logo:hover::before {
    width: 100%;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Modern Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    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: var(--transition-normal);
}

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

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

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

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

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

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    border-radius: 10px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.btn-icon:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

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

/* Main Content */
.main-content {
    margin-top: 80px;
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dashboard Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 2rem 0;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    animation: slideInLeft 0.6s ease;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Search and Filters */
.filters {
    margin-bottom: 2rem;
    animation: slideInRight 0.6s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.search-form {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-box input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: scale(1.02);
}

.search-box button {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    transition: var(--transition-normal);
}

.search-box input:focus + button {
    color: var(--primary-color);
}

.search-box select {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.search-box select:focus {
    outline: none;
    border-color: var(--primary-color);
    transform: scale(1.02);
}

/* Notes Grid with Staggered Animation */
.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.note-card {
    background: var(--bg-secondary) !important;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    border: 1px solid var(--border-color);
    animation: cardAppear 0.6s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes cardAppear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.note-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.note-card:nth-child(1) { animation-delay: 0.1s; }
.note-card:nth-child(2) { animation-delay: 0.2s; }
.note-card:nth-child(3) { animation-delay: 0.3s; }
.note-card:nth-child(4) { animation-delay: 0.4s; }
.note-card:nth-child(5) { animation-delay: 0.5s; }
.note-card:nth-child(6) { animation-delay: 0.6s; }

.note-pinned {
    position: absolute;
    top: -8px;
    right: 20px;
    background: var(--warning-gradient);
    color: white;
    padding: 6px 12px;
    border-radius: 0 0 10px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.note-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.note-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-right: 1rem;
    line-height: 1.4;
}

.note-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition-normal);
}

.note-card:hover .note-actions {
    opacity: 1;
}

.note-content {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-height: 120px;
    overflow: hidden;
    line-height: 1.6;
    position: relative;
}

.note-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(transparent, var(--bg-secondary));
}

.note-category {
    margin-bottom: 1rem;
}

.category-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-gradient);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.category-tag:hover {
    transform: scale(1.05);
}

.note-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Authentication Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.auth-container {
    width: 100%;
    max-width: 440px;
    padding: 2rem;
    position: relative;
    z-index: 2;
}

.auth-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 3rem 2rem;
    border-radius: 25px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    animation: authCardAppear 0.8s ease;
}

@keyframes authCardAppear {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(50px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    transform: scale(1.02);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
    font-size: 1rem;
    padding: 1rem 2rem;
}

.auth-link {
    text-align: center;
    margin-top: 2rem;
    color: var(--text-secondary);
}

.auth-link a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    position: relative;
}

.auth-link a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: white;
    transition: var(--transition-normal);
}

.auth-link a:hover::after {
    width: 100%;
}

/* Alerts with Animation */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    animation: slideInDown 0.5s ease;
    border-left: 4px solid;
}

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

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #fecaca;
    border-left-color: var(--error-color);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #a7f3d0;
    border-left-color: var(--success-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    grid-column: 1 / -1;
    animation: bounceIn 0.8s ease;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.5;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Note View Page */
.note-view {
    background: var(--bg-secondary) !important;
    border-radius: 25px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    animation: noteViewAppear 0.6s ease;
}

@keyframes noteViewAppear {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.note-view-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.note-view-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
    line-height: 1.3;
}

.note-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.note-date {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.note-view-content {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    color: var(--text-secondary);
}

.note-view-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Form Styles */
.form-header {
    margin: 2rem 0;
    animation: fadeIn 0.6s ease;
}

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

.note-form {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    animation: formAppear 0.6s ease;
}

@keyframes formAppear {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Color Picker */
.color-picker {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.color-picker input[type="color"] {
    width: 4rem;
    height: 4rem;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.color-picker input[type="color"]:hover {
    transform: scale(1.1);
}

.color-preview {
    width: 3rem;
    height: 3rem;
    border-radius: 12px;
    border: 3px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.color-preview:hover {
    transform: scale(1.1);
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: var(--transition-normal);
}

.checkbox-label:hover {
    transform: translateX(5px);
}

.checkbox-label input {
    display: none;
}

.checkmark {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    position: relative;
    transition: all var(--transition-normal);
    background: var(--bg-surface);
}

.checkbox-label input:checked + .checkmark {
    background: var(--primary-gradient);
    border-color: transparent;
    animation: checkmarkPop 0.3s ease;
}

@keyframes checkmarkPop {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 0.875rem;
    font-weight: bold;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Landing Page */
.landing-page {
    background: var(--primary-gradient);
    min-height: 100vh;
    color: white;
    position: relative;
    overflow: hidden;
}

.landing-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 10s ease-in-out infinite;
}

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

.hero {
    text-align: center;
    padding: 8rem 0 4rem;
    position: relative;
    z-index: 2;
    animation: heroAppear 1s ease;
}

@keyframes heroAppear {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero .logo {
    display: flex;
    justify-content: center;
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: white;
}

.hero .logo i {
    background: linear-gradient(135deg, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.5rem;
    opacity: 0.9;
    margin-bottom: 3rem;
    font-weight: 300;
}

.hero-content {
    padding: 2rem 0;
    position: relative;
    z-index: 2;
}

.features-grid {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 4rem 0;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2.5rem 2rem;
    width: 300px;
    height: 240px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all var(--transition-normal);
    animation: featureCardAppear 0.8s ease forwards;
    opacity: 0;
    transform: translateY(30px);
}

.feature-card:nth-child(1) { animation-delay: 0.2s; }
.feature-card:nth-child(2) { animation-delay: 0.4s; }
.feature-card:nth-child(3) { animation-delay: 0.6s; }
.feature-card:nth-child(4) { animation-delay: 0.8s; }

@keyframes featureCardAppear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--glass-shadow);
}

.feature-card i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    opacity: 0.8;
    line-height: 1.6;
}

.auth-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 3rem;
    flex-wrap: wrap;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .notes-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .search-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .note-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .note-view-actions {
        flex-direction: column;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .auth-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero .logo {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.25rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .note-view {
        padding: 2rem 1.5rem;
    }
    
    .note-form {
        padding: 2rem 1.5rem;
    }
    
    .auth-card {
        padding: 2rem 1.5rem;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #ffffff;
        --bg-secondary: #f8fafc;
        --bg-surface: #ffffff;
        --text-primary: #1e293b;
        --text-secondary: #475569;
        --text-muted: #64748b;
        --border-color: #e2e8f0;
        --shadow-color: rgba(0, 0, 0, 0.1);
    }
    
    .auth-card {
        background: rgba(255, 255, 255, 0.9);
    }
    
    .feature-card {
        background: rgba(255, 255, 255, 0.9);
    }
}

/* Print Styles */
@media print {
    .header, .btn, .note-actions {
        display: none !important;
    }
    
    .note-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
}

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

/* Focus styles for keyboard navigation */
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 4px;
}

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