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

:root {
    /* Color Palette */
    --color-pink-light: #F6DFEB;
    --color-purple-light: #E4C1F9;
    --color-green-light: #D0F4DE;
    --color-yellow-light: #FCF6BD;
    --color-coral: #FFB7C5;
    
    /* Text Colors - Light Mode */
    --text-primary: #2c3e50;
    --text-secondary: #34495e;
    --text-muted: #7f8c8d;
    --text-light: #ffffff;
    
    /* Holographic Colors */
    --holographic-primary: linear-gradient(135deg, var(--color-purple-light), var(--color-pink-light));
    --holographic-secondary: linear-gradient(45deg, var(--color-green-light), var(--color-yellow-light));
    --holographic-accent: linear-gradient(90deg, var(--color-coral), var(--color-purple-light));
    
    /* Dark Mode Colors */
    --dark-bg: #0f1419;
    --dark-surface: #1a2332;
    --dark-text: #ffffff;
    --dark-text-secondary: #f1f3f4;
    --dark-text-muted: #bdc1c6;
    
    /* Shadows */
    --shadow-light: 0 4px 20px rgba(228, 193, 249, 0.3);
    --shadow-medium: 0 8px 32px rgba(228, 193, 249, 0.4);
    --shadow-heavy: 0 12px 48px rgba(228, 193, 249, 0.5);
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--holographic-primary);
    background-attachment: fixed;
    min-height: 100vh;
    transition: var(--transition-smooth);
    line-height: 1.6;
    color: var(--text-primary);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Dark Mode */
body.dark-mode {
    background: linear-gradient(135deg, var(--dark-bg), var(--dark-surface));
    color: var(--dark-text);
}

/* Text Color Classes */
.text-primary {
    color: var(--text-primary) !important;
}

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

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

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

/* Dark Mode Text Colors */
body.dark-mode .text-primary {
    color: var(--dark-text) !important;
}

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

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

body.dark-mode .text-light {
    color: var(--dark-text) !important;
}

/* Header Styles */
.header-holographic {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: visible;
}

.header-holographic::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(228, 193, 249, 0.5), transparent);
}

/* Header buttons - modern design */
.header-holographic .btn.btn-outline-light {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 8px 16px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    z-index: 1000;
}

/* Language toggle dropdown */
.language-dropdown {
    position: relative;
    z-index: 9999;
}

.language-dropdown .dropdown-menu {
    z-index: 9999 !important;
    position: absolute !important;
    top: calc(100% + 8px) !important;
    left: 0 !important;
    right: auto !important;
    transform: none !important;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    min-width: 120px;
    margin-top: 0 !important;
}

body.dark-mode .language-dropdown .dropdown-menu {
    background: rgba(26, 35, 50, 0.95);
    border-color: rgba(228, 193, 249, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.language-dropdown .dropdown-item {
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    background: transparent;
}

.language-dropdown .dropdown-item:hover,
.language-dropdown .dropdown-item:focus {
    background: rgba(228, 193, 249, 0.1);
    color: var(--color-purple-light);
    transform: translateX(4px);
}

body.dark-mode .language-dropdown .dropdown-item {
    color: var(--dark-text);
}

body.dark-mode .language-dropdown .dropdown-item:hover,
body.dark-mode .language-dropdown .dropdown-item:focus {
    background: rgba(228, 193, 249, 0.15);
    color: var(--color-purple-light);
}

/* Ensure navbar doesn't clip dropdown */
.navbar {
    overflow: visible !important;
}

.navbar-nav {
    overflow: visible !important;
}

.navbar-collapse {
    overflow: visible !important;
}

.navbar .container {
    overflow: visible !important;
}

.navbar .container-fluid {
    overflow: visible !important;
}

/* Additional dropdown positioning fixes */
.language-dropdown .dropdown-menu.show {
    display: block !important;
    position: absolute !important;
    top: calc(100% + 8px) !important;
    left: 0 !important;
    right: auto !important;
    transform: none !important;
    will-change: auto !important;
}

.header-holographic .btn.btn-outline-light::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.header-holographic .btn.btn-outline-light:hover::before {
    left: 100%;
}

.header-holographic .btn.btn-outline-light:hover,
.header-holographic .btn.btn-outline-light:focus {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header-holographic .btn.btn-outline-light i {
    color: inherit;
    opacity: 0.9;
    transition: transform 0.2s ease;
}

.header-holographic .btn.btn-outline-light:hover i {
    transform: scale(1.1);
}

body.dark-mode .header-holographic .btn.btn-outline-light {
    background: rgba(26, 35, 50, 0.3);
    color: var(--dark-text);
    border: 1px solid rgba(228, 193, 249, 0.3);
}

body.dark-mode .header-holographic .btn.btn-outline-light:hover,
body.dark-mode .header-holographic .btn.btn-outline-light:focus {
    background: rgba(228, 193, 249, 0.15);
    color: var(--dark-text);
    border-color: rgba(228, 193, 249, 0.4);
    box-shadow: 0 4px 12px rgba(228, 193, 249, 0.2);
}

.navbar-brand {
    color: var(--text-primary);
    font-size: 1.6rem;
    font-weight: 800;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.02em;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
}

/* Dark mode header improvements */
body.dark-mode .header-holographic {
    background: rgba(15, 20, 25, 0.08);
    border-bottom: 1px solid rgba(228, 193, 249, 0.15);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

body.dark-mode .header-holographic::before {
    background: linear-gradient(90deg, transparent, rgba(228, 193, 249, 0.3), transparent);
}

body.dark-mode .navbar-brand {
    color: var(--dark-text);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.navbar-brand:hover {
    color: var(--color-purple-light);
    text-decoration: none;
    transform: translateY(-1px);
    text-shadow: 0 4px 12px rgba(228, 193, 249, 0.3);
}

body.dark-mode .navbar-brand:hover {
    color: var(--color-purple-light);
    text-shadow: 0 4px 12px rgba(228, 193, 249, 0.4);
}

/* Navbar Logo (imagem) */
.navbar-logo-img {
    display: inline-block;
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background-color: rgba(255, 255, 255, 0.95);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    vertical-align: middle;
    position: relative;
    overflow: hidden;
}

.navbar-logo-img:hover {
    transform: scale(1.08) rotate(2deg);
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.2));
    border-color: rgba(228, 193, 249, 0.3);
}

body.dark-mode .navbar-logo-img {
    background-color: rgba(26, 35, 50, 0.95);
    border-color: rgba(228, 193, 249, 0.3);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

body.dark-mode .navbar-logo-img:hover {
    border-color: rgba(228, 193, 249, 0.5);
    filter: drop-shadow(0 6px 12px rgba(228, 193, 249, 0.2));
}

/* Navbar Logo Emoji (fallback) */
.navbar-logo-emoji {
    font-size: 1.4rem;
    line-height: 1;
    display: inline-block;
    vertical-align: middle;
    transition: var(--transition-smooth);
}

.navbar-logo-emoji:hover {
    transform: scale(1.06) rotate(8deg);
}

@keyframes logoGlow {
    0% { 
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1)) drop-shadow(0 0 10px rgba(228, 193, 249, 0.3));
    }
    100% { 
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1)) drop-shadow(0 0 20px rgba(255, 183, 197, 0.5));
    }
}

/* Holographic Elements - Improved Legibility */
.holographic-text {
    color: var(--text-primary);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15), 0 0 20px rgba(228, 193, 249, 0.3);
    font-weight: 700;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

body.dark-mode .holographic-text {
    color: var(--dark-text);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3), 0 0 20px rgba(228, 193, 249, 0.4);
}

/* Optional: Keep holographic effect for decorative elements only */
.holographic-text.decorative {
    background: var(--holographic-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: holographicGlow 3s ease-in-out infinite alternate;
}

/* Fallback for decorative holographic text */
@supports not (-webkit-background-clip: text) {
    .holographic-text.decorative {
        background: none;
        -webkit-text-fill-color: initial;
        color: var(--text-primary);
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    body.dark-mode .holographic-text.decorative {
        color: var(--dark-text);
    }
}

@keyframes holographicGlow {
    0% { text-shadow: 0 0 30px rgba(228, 193, 249, 0.6); }
    100% { text-shadow: 0 0 40px rgba(255, 183, 197, 0.8); }
}

.holographic-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.holographic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.holographic-card:hover::before {
    left: 100%;
}

.holographic-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

/* Dark Mode Cards */
body.dark-mode .holographic-card {
    background: rgba(26, 35, 50, 0.95);
    border-color: rgba(228, 193, 249, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Buttons */
.holographic-btn {
    background: linear-gradient(135deg, var(--color-purple-light), #d4a5f0);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 14px 32px;
    font-weight: 700;
    font-size: 1.1rem;
    color: #2a2139;
    text-transform: none;
    letter-spacing: 0.5px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(228, 193, 249, 0.4);
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.holographic-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.holographic-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(228, 193, 249, 0.5);
    background: linear-gradient(135deg, #e6b8f7, var(--color-purple-light));
}

.holographic-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(228, 193, 249, 0.4);
}

.holographic-btn:focus {
    outline: 3px solid rgba(228, 193, 249, 0.5);
    outline-offset: 2px;
}

/* Dark mode for holographic button */
body.dark-mode .holographic-btn {
    background: linear-gradient(135deg, rgba(228, 193, 249, 0.9), rgba(212, 165, 240, 0.9));
    color: #1d1830;
    border-color: rgba(228, 193, 249, 0.4);
    box-shadow: 0 6px 20px rgba(228, 193, 249, 0.3);
}

body.dark-mode .holographic-btn:hover {
    background: linear-gradient(135deg, rgba(228, 193, 249, 1), rgba(212, 165, 240, 1));
    box-shadow: 0 8px 25px rgba(228, 193, 249, 0.4);
}

/* Form Elements */
.form-control, .form-select {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    transition: var(--transition-smooth);
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-control:focus, .form-select:focus {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--color-purple-light);
    box-shadow: 0 0 20px rgba(228, 193, 249, 0.4), 0 4px 12px rgba(0, 0, 0, 0.15);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

body.dark-mode .form-control,
body.dark-mode .form-select {
    background: rgba(26, 35, 50, 0.9);
    border-color: rgba(228, 193, 249, 0.5);
    color: var(--dark-text);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-mode .form-control:focus,
body.dark-mode .form-select:focus {
    background: rgba(26, 35, 50, 1);
    border-color: var(--color-purple-light);
    color: var(--dark-text);
    box-shadow: 0 0 20px rgba(228, 193, 249, 0.4), 0 4px 12px rgba(0, 0, 0, 0.4);
}

body.dark-mode .form-control::placeholder {
    color: var(--dark-text-muted);
}

/* Form Labels */
.form-label {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

body.dark-mode .form-label {
    color: var(--dark-text);
}

.form-text {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

body.dark-mode .form-text {
    color: var(--dark-text-muted);
}

/* Navigation Pills */
.nav-pills .nav-link {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    margin: 0 5px;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.nav-pills .nav-link.active {
    background: var(--holographic-secondary);
    border-color: transparent;
    color: #333;
    font-weight: 600;
}

.nav-pills .nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Results Container */
.results-container {
    animation: slideInUp 0.5s ease-out;
}

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

.sleep-times-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sleep-time-item {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    position: relative;
}

.sleep-time-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.02);
    box-shadow: var(--shadow-light);
}

.sleep-time-item.recommended {
    border-color: var(--color-green-light);
    background: rgba(208, 244, 222, 0.2);
}

.sleep-time-item.recommended::before {
    content: '⭐';
    position: absolute;
    top: -5px;
    right: -5px;
    font-size: 1.2rem;
}

.sleep-time-display {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    margin-bottom: 10px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Dark mode for sleep time display */
body.dark-mode .sleep-time-display {
    color: var(--dark-text);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.sleep-cycles-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

body.dark-mode .sleep-cycles-info {
    color: var(--dark-text-secondary);
}

/* Sleep Tips */
.tip-card {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    height: 100%;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.tip-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
    background: rgba(255, 255, 255, 0.2);
}

body.dark-mode .tip-card {
    background: rgba(26, 35, 50, 0.9);
    border-color: rgba(228, 193, 249, 0.4);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

body.dark-mode .tip-card:hover {
    background: rgba(26, 35, 50, 1);
}

.tip-card h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

body.dark-mode .tip-card h5 {
    color: var(--dark-text);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.tip-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

body.dark-mode .tip-card p {
    color: var(--dark-text-secondary);
}

.tip-icon {
    font-size: 2.5rem;
    background: var(--holographic-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* FAQ Accordion */
.accordion-item {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px !important;
    margin-bottom: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark-mode .accordion-item {
    background: rgba(26, 35, 50, 0.9);
    border-color: rgba(228, 193, 249, 0.4);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.accordion-button {
    background: transparent;
    border: none;
    border-radius: 15px !important;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

body.dark-mode .accordion-button {
    color: var(--dark-text);
}

.accordion-button:not(.collapsed) {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    box-shadow: none;
}

body.dark-mode .accordion-button:not(.collapsed) {
    background: rgba(26, 35, 50, 1);
    color: var(--dark-text);
}

.accordion-button:focus {
    box-shadow: 0 0 20px rgba(228, 193, 249, 0.4);
}

.accordion-body {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0 0 15px 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

body.dark-mode .accordion-body {
    background: rgba(26, 35, 50, 0.6);
    color: var(--dark-text-secondary);
}

/* Footer */
.footer-holographic {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(25px);
    border-top: 2px solid rgba(255, 255, 255, 0.2);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
    color: var(--text-secondary);
    position: relative;
    overflow: hidden;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.footer-holographic::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--color-purple-light) 20%, 
        var(--color-blue-light) 50%, 
        var(--color-purple-light) 80%, 
        transparent 100%);
    opacity: 0.8;
}

.footer-holographic::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        transparent 100%);
}

body.dark-mode .footer-holographic {
    background: rgba(0, 0, 0, 0.4);
    border-top-color: rgba(255, 255, 255, 0.15);
    border-bottom-color: rgba(255, 255, 255, 0.1);
    color: var(--dark-text-secondary);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

/* Footer Brand */
.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.footer-brand .navbar-logo-emoji {
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

/* Footer Links */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.footer-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.1), 
        transparent);
    transition: left 0.5s ease;
}

.footer-link:hover::before {
    left: 100%;
}

.footer-link:hover {
    color: var(--color-purple-light);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.footer-link i {
    font-size: 1rem;
    margin-right: 0.5rem;
    transition: transform 0.3s ease;
}

.footer-link:hover i {
    transform: scale(1.1);
}

body.dark-mode .footer-link {
    color: var(--dark-text-secondary);
}

body.dark-mode .footer-link:hover {
    color: var(--color-purple-light);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Footer Divider */
.footer-divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 20%, 
        rgba(255, 255, 255, 0.4) 50%, 
        rgba(255, 255, 255, 0.2) 80%, 
        transparent 100%);
    margin: 2rem 0;
}

body.dark-mode .footer-divider {
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.1) 20%, 
        rgba(255, 255, 255, 0.2) 50%, 
        rgba(255, 255, 255, 0.1) 80%, 
        transparent 100%);
}

/* Footer Links Responsive */
@media (max-width: 768px) {
    .footer-links {
        gap: 0.75rem;
        justify-content: center !important;
        margin-top: 1rem;
    }
    
    .footer-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
    
    .footer-brand {
        justify-content: center;
        text-align: center;
    }
    
    .footer-brand .navbar-logo-emoji {
        font-size: 1.25rem;
    }
    
    .footer-holographic {
        text-align: center;
    }
}

/* Typography Improvements */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4,
body.dark-mode h5,
body.dark-mode h6 {
    color: var(--dark-text);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.display-4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

body.dark-mode .display-4 {
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.lead {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.1rem;
    line-height: 1.6;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

body.dark-mode .lead {
    color: var(--dark-text-secondary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Section Titles */
.section-title {
    color: var(--text-primary);
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body.dark-mode .section-title {
    color: var(--dark-text);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Small text improvements */
.small {
    color: var(--text-muted);
    font-weight: 400;
}

body.dark-mode .small {
    color: var(--dark-text-muted);
}

/* Offcanvas */
.offcanvas {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1050;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    width: 320px;
    max-width: 85vw;
    will-change: transform;
}

.offcanvas-backdrop {
    z-index: 1040;
    transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body.dark-mode .offcanvas {
    background: rgba(26, 35, 50, 0.98);
    border-left-color: rgba(228, 193, 249, 0.4);
    color: var(--dark-text);
}

.offcanvas-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 1.5rem 1rem;
}

body.dark-mode .offcanvas-header {
    border-bottom-color: rgba(228, 193, 249, 0.3);
}

.offcanvas-title {
    font-weight: 600;
    color: var(--text-primary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

body.dark-mode .offcanvas-title {
    color: var(--dark-text);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.offcanvas-body {
    padding: 1rem 1.5rem;
    overflow-y: auto;
}

/* Menu Navigation */
.menu-navigation {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.menu-section {
    margin-bottom: 2rem;
}

.menu-section:last-child {
    margin-bottom: 0;
}

.menu-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    color: var(--text-primary);
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

body.dark-mode .menu-section-title {
    color: var(--dark-text);
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.menu-item {
    margin-bottom: 0.5rem;
}

.menu-item:last-child {
    margin-bottom: 0;
}

.menu-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: inherit;
    border-radius: 12px;
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
}

.menu-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(3px);
    color: inherit;
    text-decoration: none;
}

.menu-link:focus {
    outline: 2px solid var(--color-purple-light);
    outline-offset: 2px;
}

body.dark-mode .menu-link {
    background: rgba(26, 35, 50, 0.8);
    border-color: rgba(228, 193, 249, 0.4);
    color: var(--dark-text);
}

body.dark-mode .menu-link:hover {
    background: rgba(228, 193, 249, 0.2);
    color: var(--dark-text);
}

.menu-link i {
    font-size: 1.25rem;
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

.menu-link span {
    font-weight: 500;
}

.menu-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 1.5rem 0;
    border: none;
}

body.dark-mode .menu-divider {
    background: rgba(228, 193, 249, 0.3);
}

.menu-info {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark-mode .menu-info {
    background: rgba(26, 35, 50, 0.6);
    border-color: rgba(228, 193, 249, 0.3);
}

.menu-info-text {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.5;
    opacity: 0.8;
}

/* Modal */
.modal-backdrop.show {
    opacity: 0.5;
}

.modal-content {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    color: var(--text-primary);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.modal-title {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.01em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.modal-body p {
    color: var(--text-secondary);
}

/* Form elements inside modal */
.modal-content .form-label {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-content .form-text {
    color: var(--text-muted);
}

.modal-content .form-control,
.modal-content .form-select {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid rgba(0, 0, 0, 0.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06) inset;
}

.modal-content .form-control:focus,
.modal-content .form-select:focus {
    border-color: var(--color-purple-light);
    box-shadow: 0 0 0 3px rgba(228, 193, 249, 0.35);
}

/* Buttons inside modal */
.modal-content .btn-primary {
    background: var(--color-purple-light);
    border-color: var(--color-purple-light);
    color: #2a2139;
    font-weight: 600;
}

.modal-content .btn-primary:hover,
.modal-content .btn-primary:focus {
    filter: brightness(0.95);
}

.modal-content .btn-secondary {
    background: #ffffff;
    color: var(--text-primary);
    border: 1px solid rgba(0, 0, 0, 0.2);
    font-weight: 600;
}

.modal-content .btn-secondary:hover,
.modal-content .btn-secondary:focus {
    background: #f7f7f9;
    border-color: rgba(0, 0, 0, 0.35);
}

/* Dark mode variants */
body.dark-mode .modal-backdrop.show {
    opacity: 0.6;
}

body.dark-mode .modal-content {
    background: rgba(26, 35, 50, 0.98);
    color: var(--dark-text);
    border: 1px solid rgba(228, 193, 249, 0.4);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

body.dark-mode .modal-header {
    border-bottom-color: rgba(228, 193, 249, 0.25);
}

body.dark-mode .modal-title {
    color: var(--dark-text);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

body.dark-mode .modal-content .form-label {
    color: var(--dark-text);
}

body.dark-mode .modal-content .form-text {
    color: var(--dark-text-muted);
}

body.dark-mode .modal-content .form-control,
body.dark-mode .modal-content .form-select {
    background: rgba(26, 35, 50, 0.9);
    color: var(--dark-text);
    border: 1px solid rgba(228, 193, 249, 0.4);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3) inset;
}

body.dark-mode .modal-content .form-control:focus,
body.dark-mode .modal-content .form-select:focus {
    border-color: rgba(228, 193, 249, 0.6);
    box-shadow: 0 0 0 3px rgba(228, 193, 249, 0.35);
}

body.dark-mode .modal-content .btn-primary {
    background: rgba(228, 193, 249, 0.9);
    border-color: rgba(228, 193, 249, 0.9);
    color: #1d1830;
}

body.dark-mode .modal-content .btn-secondary {
    background: rgba(26, 35, 50, 0.8);
    color: var(--dark-text);
    border: 1px solid rgba(228, 193, 249, 0.4);
}


/* Loading Animation */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-purple-light);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 20px 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .holographic-card {
        margin: 10px;
        border-radius: 15px;
    }
    
    .sleep-time-display {
        font-size: 1.5rem;
    }
    
    .nav-pills .nav-link {
        margin: 5px 0;
        font-size: 0.9rem;
    }
    
    .btn-lg {
        padding: 10px 20px;
        font-size: 1rem;
    }
    
    .tip-card {
        margin-bottom: 20px;
    }
    
    /* Header mobile adjustments */
    .navbar-brand {
        font-size: 1.4rem;
        gap: 0.5rem;
    }
    
    .navbar-logo-img {
        width: 32px;
        height: 32px;
    }
    
    .header-holographic .btn.btn-outline-light {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    /* Offcanvas mobile adjustments */
    .offcanvas {
        width: 100vw;
        max-width: 100vw;
        transition: transform 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    
    .offcanvas-header {
        padding: 1rem;
    }
    
    .offcanvas-body {
        padding: 0.75rem 1rem;
    }
    
    .menu-link {
        padding: 1rem;
        font-size: 1rem;
        transition: all 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    
    .menu-link:hover {
        transform: translateX(2px);
    }
    
    .menu-link i {
        font-size: 1.5rem;
        margin-right: 1rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .holographic-card {
        margin: 5px;
        padding: 15px;
    }
    
    .card-body {
        padding: 20px !important;
    }
    
    .hero-section h1 {
        font-size: 1.8rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    .sleep-time-item {
        padding: 15px;
    }
    
    .sleep-time-display {
        font-size: 1.3rem;
    }
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --text-muted: #666666;
        --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.5);
        --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.6);
        --shadow-heavy: 0 12px 48px rgba(0, 0, 0, 0.7);
    }
    
    body.dark-mode {
        --dark-text: #ffffff;
        --dark-text-secondary: #e0e0e0;
        --dark-text-muted: #b0b0b0;
    }
    
    .holographic-card {
        border-width: 2px;
        border-color: #000000;
    }
    
    body.dark-mode .holographic-card {
        border-color: #ffffff;
    }
    
    .form-control, .form-select {
        border-width: 2px;
        border-color: #000000;
    }
    
    body.dark-mode .form-control,
    body.dark-mode .form-select {
        border-color: #ffffff;
    }
    
    .holographic-text {
        background: none;
        -webkit-background-clip: initial;
        background-clip: initial;
        -webkit-text-fill-color: initial;
        color: var(--text-primary);
    }
    
    body.dark-mode .holographic-text {
        color: var(--dark-text);
    }
}

/* Print Styles */
@media print {
    .header-holographic,
    .footer-holographic,
    .btn,
    .offcanvas,
    .modal {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .holographic-card {
        background: white !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
}

/* Focus Styles for Accessibility */
button:focus,
input:focus,
select:focus,
a:focus {
    outline: 2px solid var(--color-purple-light);
    outline-offset: 2px;
}

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

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

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

/* Privacy and Terms Pages */
.privacy-content,
.terms-content {
    line-height: 1.7;
}

.privacy-content h2,
.terms-content h2 {
    color: var(--text-primary);
    border-bottom: 2px solid var(--color-purple-light);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

body.dark-mode .privacy-content h2,
body.dark-mode .terms-content h2 {
    color: var(--dark-text);
    border-bottom-color: var(--color-purple-light);
}

.privacy-content h3,
.terms-content h3 {
    color: var(--text-secondary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

body.dark-mode .privacy-content h3,
body.dark-mode .terms-content h3 {
    color: var(--dark-text-secondary);
}

.privacy-content h4,
.terms-content h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

body.dark-mode .privacy-content h4,
body.dark-mode .terms-content h4 {
    color: var(--dark-text);
}

.privacy-content ul,
.terms-content ul {
    margin-bottom: 1rem;
}

.privacy-content li,
.terms-content li {
    margin-bottom: 0.5rem;
}

.privacy-content .alert,
.terms-content .alert {
    border-radius: 12px;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body.dark-mode .privacy-content .alert,
body.dark-mode .terms-content .alert {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Utility Classes */
.text-gradient {
    background: var(--holographic-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hover-lift {
    transition: var(--transition-smooth);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-light);
}