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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #4ade80;
    --warning-color: #fbbf24;
    --error-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --border-radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;

    /* Mood-based colors */
    --mood-sad: #3b82f6;      /* Blue for sadness */
    --mood-neutral: #6b7280;  /* Gray for neutral */
    --mood-happy: #eab308;    /* Yellow for happiness */
    --mood-very-happy: #f59e0b; /* Orange for very happy */
    --mood-very-sad: #1e40af;  /* Dark blue for very sad */

    /* Dark mode variables */
    --dark-bg-primary: #1f2937;
    --dark-bg-secondary: #111827;
    --dark-bg-tertiary: #374151;
    --dark-text-primary: #f9fafb;
    --dark-text-secondary: #d1d5db;
    --dark-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* Dark Mode Styles */
body.dark-mode {
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --bg-primary: var(--dark-bg-primary);
    --bg-secondary: var(--dark-bg-secondary);
    --bg-tertiary: var(--dark-bg-tertiary);
    --shadow-sm: var(--dark-shadow);
    --shadow-md: var(--dark-shadow);
    --shadow-lg: var(--dark-shadow);
}

/* Force dark mode styles to override */
body.dark-mode .auth-container,
body.dark-mode .sidebar,
body.dark-mode .top-nav,
body.dark-mode .main-content,
body.dark-mode .stat-card,
body.dark-mode .chart-container,
body.dark-mode .recent-moods,
body.dark-mode .mood-selector .mood-option,
body.dark-mode .suggestion-card,
body.dark-mode .chat-container,
body.dark-mode .profile-card,
body.dark-mode .toast {
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border-color: var(--bg-tertiary) !important;
}

body.dark-mode .auth-tabs .tab.active,
body.dark-mode .nav-link.active,
body.dark-mode .mood-option.selected {
    background: var(--bg-secondary) !important;
    color: var(--primary-color) !important;
}

body.dark-mode .form-group input,
body.dark-mode .note-section textarea,
body.dark-mode #chat-input {
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border-color: var(--bg-tertiary) !important;
}

body.dark-mode .form-group input:focus,
body.dark-mode .note-section textarea:focus,
body.dark-mode #chat-input:focus {
    border-color: var(--primary-color) !important;
}

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

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Auth Screen */
.auth-container {
    max-width: 420px;
    margin: 0 auto;
    padding: 2.5rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    margin-top: 5vh;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-illustration {
    margin-bottom: 1.5rem;
    display: inline-block;
}

.auth-header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.welcome-features {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    min-width: 80px;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature-item span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
}

/* Auth Tabs */
.auth-tabs {
    display: flex;
    margin-bottom: 2rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 4px;
}

.tab {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    border-radius: calc(var(--border-radius) - 4px);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tab.active {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    color: var(--primary-color);
}

/* Auth Forms */
.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: slideInUp 0.4s ease;
}

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

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--primary-color);
    font-size: 1rem;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
    background: var(--bg-primary);
    transform: translateY(-1px);
}

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

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--bg-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

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

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

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

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

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

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-google {
    width: 100%;
    padding: 0.875rem;
    background: white;
    color: #757575;
    border: 2px solid #dadce0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.btn-google:hover {
    background: #f8f9fa;
    border-color: #c4c7c5;
    box-shadow: var(--shadow-md);
}

.btn-google i {
    color: #ea4335;
    font-size: 1.1rem;
}

/* Google Auth Section */
.google-auth {
    margin-bottom: 1.5rem;
}

.divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--bg-tertiary);
}

.divider span {
    background: var(--bg-primary);
    padding: 0 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Main App Layout */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    box-shadow: var(--shadow-xl);
    z-index: 100;
    transform: translateX(-100%);
    transition: var(--transition);
    border-right: 1px solid rgba(0, 0, 0, 0.05);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--bg-tertiary);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-logo svg {
    flex-shrink: 0;
}

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

.nav-links {
    list-style: none;
    padding: 1.5rem 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    margin: 0.25rem 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border-radius: var(--border-radius);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--bg-gradient);
    border-radius: 0 2px 2px 0;
    transform: scaleY(0);
    transition: var(--transition);
}

.nav-link:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.nav-link.active::before {
    transform: scaleY(1);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

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

/* Top Navigation */
.top-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: 60px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.nav-spacer {
    flex: 1;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.user-avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.profile-dropdown {
    position: absolute;
    top: 100%;
    right: 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--bg-tertiary);
}

.dropdown-item:last-child {
    border-bottom: none;
}

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

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

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

.main-content {
    margin-left: 0;
    padding: 2rem;
    padding-top: 5rem; /* Account for top nav */
    min-height: 100vh;
    background: var(--bg-secondary);
    transition: var(--transition);
}

.sidebar.open ~ .main-content {
    margin-left: 250px;
}

/* Page Management */
.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

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

/* Page Header */
.page-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.mood-header-icon,
.suggestions-header-icon,
.assistant-header-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: inline-block;
}

.page-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: 1.75rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.stat-trend i {
    font-size: 0.8rem;
}

.stat-trend.positive {
    color: var(--success-color);
}

/* Chart Container */
.chart-container {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.chart-header {
    text-align: center;
    margin-bottom: 2rem;
}

.chart-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.chart-header h3 i {
    color: var(--primary-color);
}

.chart-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.chart-wrapper {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Recent Moods */
.recent-moods {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.section-header h3 i {
    color: var(--primary-color);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.moods-list {
    display: grid;
    gap: 1rem;
}

.mood-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.mood-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.mood-item .mood-emoji {
    font-size: 2rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.mood-item .mood-info {
    flex: 1;
    min-width: 0;
}

.mood-item .mood-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.mood-item .mood-note {
    color: var(--text-primary);
    font-size: 0.9rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    opacity: 0.6;
}

.empty-state h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 1rem;
    line-height: 1.5;
    max-width: 300px;
    margin: 0 auto;
}

/* Mood Selector */
.mood-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.mood-option {
    background: var(--bg-primary);
    padding: 2rem 1.5rem;
    border-radius: var(--border-radius-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.mood-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-gradient);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.mood-option:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.mood-option:hover::before {
    opacity: 0.05;
}

.mood-option.selected {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mood-option.selected::before {
    opacity: 0.1;
}

.mood-emoji {
    font-size: 3rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
    display: block;
}

.mood-option:hover .mood-emoji {
    transform: scale(1.15) rotate(5deg);
}

.mood-option.selected .mood-emoji {
    transform: scale(1.1);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.mood-option span {
    display: block;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
    letter-spacing: 0.025em;
}

/* Note Section */
.note-section {
    margin-bottom: 2.5rem;
}

.note-section label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.note-section label i {
    color: var(--primary-color);
}

.note-section textarea {
    width: 100%;
    padding: 1.25rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    min-height: 120px;
    transition: var(--transition);
    background: var(--bg-secondary);
    line-height: 1.6;
}

.note-section textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
    background: var(--bg-primary);
    transform: translateY(-1px);
}

.note-section textarea::placeholder {
    color: var(--text-muted);
}

/* Suggestions */
.suggestions-grid {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.suggestion-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 5px solid var(--primary-color);
    animation: slideIn 0.4s ease;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.suggestion-card i {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-right: 0.75rem;
    opacity: 0.8;
}

.suggestion-card p {
    margin: 0;
    line-height: 1.7;
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.suggestion-placeholder {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 2px dashed var(--bg-tertiary);
}

.placeholder-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    opacity: 0.6;
}

.suggestion-placeholder h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.suggestion-placeholder p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto;
}

.suggestions-actions {
    text-align: center;
    margin-top: 2rem;
}

/* Chat/Assistant Styles */
.chat-container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 650px;
    max-height: 80vh;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    display: flex;
    gap: 0.75rem;
    max-width: 80%;
    animation: messageSlideIn 0.3s ease;
}

@keyframes messageSlideIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.assistant-message .message-avatar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background: var(--text-secondary);
    color: white;
}

.message-content {
    background: var(--bg-secondary);
    padding: 0.875rem 1rem;
    border-radius: 18px;
    position: relative;
}

.user-message .message-content {
    background: var(--primary-color);
    color: white;
}

.message-content p {
    margin: 0;
    line-height: 1.5;
    word-wrap: break-word;
}

.message-time {
    font-size: 0.75rem;
    color: rgba(0, 0, 0, 0.5);
    margin-top: 0.25rem;
    display: block;
    text-align: right;
}

.message.user-message .message-time {
    color: rgba(255, 255, 255, 0.7);
}

.chat-input-container {
    border-top: 1px solid var(--bg-tertiary);
    padding: 1rem 1.5rem;
    background: var(--bg-primary);
}

.chat-input-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

#chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

#chat-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn-send {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.btn-send:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

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

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem 0;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.typing-dots {
    display: flex;
    gap: 0.25rem;
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* Profile Styles */
.profile-container {
    max-width: 600px;
    margin: 0 auto;
}

.profile-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    margin-bottom: 2rem;
}

.profile-avatar-section {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--bg-tertiary);
}

.profile-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    margin: 0 auto 1rem;
    box-shadow: var(--shadow-md);
}

.profile-info {
    display: grid;
    gap: 1.5rem;
}

.info-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.info-group label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-weight: 500;
    color: var(--text-primary);
}

.profile-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-danger {
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
}

.toast {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: toastSlideIn 0.3s ease;
    min-width: 300px;
}

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

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast i {
    font-size: 1.25rem;
}

.toast.success i {
    color: var(--success-color);
}

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

.toast.warning i {
    color: var(--warning-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }

    .main-content {
        padding: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }

    .mood-selector {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        padding: 1rem;
        padding-top: 4rem;
    }

    .sidebar.open ~ .main-content {
        margin-left: 0;
    }

    .top-nav {
        padding: 0 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .mood-selector {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .mood-option {
        padding: 1rem;
    }

    .mood-emoji {
        font-size: 2rem;
    }

    .auth-container {
        margin: 1rem;
        padding: 1.5rem;
        max-width: none;
    }

    .auth-header h1 {
        font-size: 1.75rem;
    }

    .page-header h2 {
        font-size: 1.5rem;
    }

    .chart-container,
    .recent-moods {
        padding: 1.5rem;
    }

    .chat-container {
        height: 500px;
        max-height: 70vh;
    }

    .toast-container {
        left: 20px;
        right: 20px;
        top: 10px;
    }

    .toast {
        min-width: auto;
        font-size: 0.9rem;
    }

    .profile-card {
        padding: 1.5rem;
    }

    .profile-avatar-large {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .mood-selector {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .mood-option {
        padding: 0.75rem;
    }

    .mood-emoji {
        font-size: 1.75rem;
        margin-bottom: 0.25rem;
    }

    .mood-option span {
        font-size: 0.875rem;
    }

    .stat-card {
        padding: 1rem;
        gap: 0.75rem;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .stat-content h3 {
        font-size: 1.25rem;
    }

    .chart-container,
    .recent-moods {
        padding: 1rem;
    }

    .page-header {
        margin-bottom: 1.5rem;
    }

    .page-header h2 {
        font-size: 1.25rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .auth-container {
        margin: 0.5rem;
        padding: 1rem;
    }

    .auth-header h1 {
        font-size: 1.5rem;
    }

    .auth-header i {
        font-size: 2.5rem;
    }

    .form-group input,
    .note-section textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .chat-container {
        height: 450px;
        max-height: 60vh;
    }

    .message {
        max-width: 90%;
        gap: 0.5rem;
    }

    .message-avatar {
        width: 35px;
        height: 35px;
        font-size: 0.875rem;
    }

    .message-content {
        padding: 0.75rem;
        font-size: 0.9rem;
    }

    .chat-input-wrapper {
        gap: 0.5rem;
    }

    #chat-input {
        padding: 0.625rem 0.875rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .btn-send {
        width: 40px;
        height: 40px;
    }

    .profile-card {
        padding: 1rem;
    }

    .profile-avatar-large {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

    .info-group {
        padding: 0.75rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .info-group label {
        font-size: 0.75rem;
    }

    .profile-actions {
        grid-template-columns: 1fr;
    }

    .toast {
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }
}

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

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

/* Hamburger Menu */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* Mood Actions */
.mood-actions {
    text-align: center;
    margin-top: 2rem;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--bg-tertiary);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.crop-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
    border: 2px dashed var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 1rem;
    background: var(--bg-secondary);
}

.crop-controls {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

/* Calendar Styles */
.calendar-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.calendar-container {
    margin-top: 1.5rem;
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.calendar-nav {
    background: none;
    border: 2px solid var(--bg-tertiary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.calendar-nav:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: scale(1.05);
}

.calendar-header h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.calendar-day-name {
    color: var(--text-secondary);
    font-weight: 600;
    cursor: default;
}

.calendar-day:hover {
    transform: scale(1.05);
}

.calendar-day.today {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.calendar-day.mood-very-sad { background: var(--mood-very-sad); color: white; }
.calendar-day.mood-sad { background: var(--mood-sad); color: white; }
.calendar-day.mood-neutral { background: var(--mood-neutral); color: white; }
.calendar-day.mood-happy { background: var(--mood-happy); color: black; }
.calendar-day.mood-very-happy { background: var(--mood-very-happy); color: black; }

/* Achievements & Badges */
.achievements-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.badge-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}

.badge-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.badge-item.unlocked {
    background: linear-gradient(135deg, var(--success-color), #22c55e);
    color: white;
    border-color: var(--success-color);
    animation: badgeUnlock 0.6s ease;
}

.badge-item.locked {
    opacity: 0.6;
    filter: grayscale(100%);
}

.badge-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.badge-item span {
    font-size: 0.875rem;
    font-weight: 500;
}

@keyframes badgeUnlock {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

/* Challenges Section */
.challenges-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.challenges-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.challenge-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.challenge-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

.challenge-item.completed {
    background: linear-gradient(135deg, var(--success-color), #22c55e);
    color: white;
    border-color: var(--success-color);
}

.challenge-checkbox {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.challenge-item.completed .challenge-checkbox {
    background: white;
    border-color: white;
}

.challenge-item.completed .challenge-checkbox i {
    color: var(--success-color);
    font-size: 0.75rem;
}

.challenge-content span {
    font-weight: 500;
    display: block;
    margin-bottom: 0.25rem;
}

.challenge-content small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.challenge-item.completed .challenge-content small {
    color: rgba(255, 255, 255, 0.8);
}

/* Quote Section */
.quote-section {
    margin-bottom: 2rem;
}

.quote-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    padding: 2rem;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.quote-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: quoteGlow 4s ease-in-out infinite alternate;
}

@keyframes quoteGlow {
    0% { transform: rotate(0deg) scale(1); }
    100% { transform: rotate(180deg) scale(1.1); }
}

.quote-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.quote-content p {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.quote-content cite {
    font-style: italic;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.quote-refresh {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: white;
    backdrop-filter: blur(10px);
}

.quote-refresh:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(180deg);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--bg-tertiary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: scale(1.05);
}

.theme-toggle.dark i::before {
    content: '\f185'; /* sun icon */
}

/* Editable Fields */
.editable {
    position: relative;
}

.edit-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
    opacity: 0;
}

.editable:hover .edit-btn {
    opacity: 1;
}

.edit-btn:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.editable-field {
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
    min-height: 2rem;
    display: flex;
    align-items: center;
}

.editable-field[contenteditable="true"] {
    background: var(--bg-secondary);
    border: 2px solid var(--primary-color);
    outline: none;
}

.editable-field[contenteditable="false"]:hover {
    background: var(--bg-tertiary);
}

.bio-field {
    min-height: 3rem;
    align-items: flex-start;
    padding-top: 0.75rem;
}

.bio-field[data-placeholder]:empty::before {
    content: attr(data-placeholder);
    color: var(--text-secondary);
    font-style: italic;
    pointer-events: none;
}

/* Tooltips */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 0.5rem;
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: calc(100% - 5px);
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--text-primary);
    z-index: 1000;
}

/* Dark Mode */
body.dark-mode {
    --bg-primary: var(--dark-bg-primary);
    --bg-secondary: var(--dark-bg-secondary);
    --bg-tertiary: var(--dark-bg-tertiary);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --shadow-lg: var(--dark-shadow);
    --shadow-md: var(--dark-shadow);
    --shadow-sm: var(--dark-shadow);
}

body.dark-mode .sidebar {
    background: var(--dark-bg-primary);
    border-right: 1px solid var(--dark-bg-tertiary);
}

body.dark-mode .top-nav {
    background: var(--dark-bg-primary);
    border-bottom: 1px solid var(--dark-bg-tertiary);
}

/* Micro-animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-4px); }
    60% { transform: translateY(-2px); }
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-bounce {
    animation: bounce 1s infinite;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        font-size: 0.75rem;
    }

    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .challenges-list {
        gap: 0.75rem;
    }

    .challenge-item {
        padding: 0.75rem;
    }

    .quote-card {
        padding: 1.5rem;
    }

    .quote-content p {
        font-size: 1.1rem;
    }
}

/* Enhanced Chart Animations */
.chart-container canvas {
    animation: chartFadeIn 0.8s ease-out;
}

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

/* Mood Selection Animations */
.mood-option {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

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

.mood-option:hover::before {
    left: 100%;
}

.mood-option.selected {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    animation: moodSelect 0.4s ease-out;
}

@keyframes moodSelect {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1.05); }
}

/* Button Animations */
.btn-primary, .btn-secondary {
    position: relative;
    overflow: hidden;
}

.btn-primary::before, .btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:active::before, .btn-secondary:active::before {
    width: 300px;
    height: 300px;
}

/* Form Animations */
.form-group input:focus, .form-group textarea:focus {
    animation: inputFocus 0.3s ease-out;
}

@keyframes inputFocus {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Page Transitions */
.page {
    animation: pageSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Stats Card Animations */
.stat-card {
    animation: statCardFloat 0.6s ease-out;
    animation-fill-mode: both;
}

.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }

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

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success/Error States */
.success-animation {
    animation: successPulse 0.6s ease-out;
}

.error-animation {
    animation: errorShake 0.5s ease-in-out;
}

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

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: 2px;
        font-size: 0.75rem;
    }

    .calendar-day {
        padding: 0.5rem;
        min-height: 35px;
    }

    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .badge-item {
        padding: 0.75rem;
        font-size: 0.8rem;
    }

    .challenges-list {
        gap: 0.5rem;
    }

    .challenge-item {
        padding: 0.75rem;
    }

    .quote-card {
        padding: 1.25rem;
    }

    .quote-content p {
        font-size: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .mood-selector {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .mood-option {
        padding: 1rem;
    }

    .mood-emoji {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .mood-selector {
        grid-template-columns: 1fr;
    }

    .badges-grid {
        grid-template-columns: 1fr;
    }

    .calendar-header h4 {
        font-size: 1rem;
    }

    .calendar-nav {
        width: 35px;
        height: 35px;
    }

    .quote-section {
        margin-bottom: 1.5rem;
    }

    .quote-card {
        padding: 1rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

/* Enhanced Focus States for Accessibility */
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success/Error States */
.success-message {
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.3);
    color: #16a34a;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #dc2626;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
}