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

:root {
    /* Fitness & Health Dark Theme */
    --primary: #00d4aa;
    --primary-dark: #00b894;
    --primary-light: #00e6b8;
    --secondary: #ff6b6b;
    --accent: #4ecdc4;
    --warning: #fdcb6e;
    --danger: #e84393;
    --success: #00b894;
    
    /* Dark Theme Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #252b3d;
    --bg-card: #1e2332;
    --bg-glass: rgba(30, 35, 50, 0.8);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a9c0;
    --text-muted: #6b7280;
    --text-accent: var(--primary);
    
    /* Borders & Shadows */
    --border: #2d3748;
    --border-light: #374151;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.3);
    
    /* Border Radius */
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary) 0%, var(--danger) 100%);
    --gradient-bg: linear-gradient(135deg, #0a0e1a 0%, #1a1f2e 50%, #252b3d 100%);
    --gradient-card: linear-gradient(145deg, rgba(30, 35, 50, 0.9) 0%, rgba(26, 31, 46, 0.9) 100%);
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(78, 205, 196, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 107, 107, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Navigation */
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: slideDown 0.6s ease-out;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: fadeInLeft 0.8s ease-out;
}

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

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    position: relative;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.brand-icon:hover {
    transform: rotate(5deg) scale(1.05);
    box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
}

.brand-icon::after {
    content: 'C';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-primary);
    font-weight: 800;
    font-size: 1.2rem;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-tabs {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.nav-tab {
    padding: 0.875rem 1.75rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.nav-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-tab:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.nav-tab:hover::before {
    left: 0;
}

.nav-tab.active {
    color: var(--bg-primary);
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.nav-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: fadeInRight 0.8s ease-out 0.4s both;
}

.sign-out-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.sign-out-btn:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.profile-avatar {
    width: 44px;
    height: 44px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid var(--border);
    position: relative;
    overflow: hidden;
}

.profile-avatar::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.profile-avatar:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.4);
}

.profile-avatar:hover::before {
    opacity: 1;
    animation: shimmer 0.6s ease;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    animation: fadeIn 0.8s ease-out 0.6s both;
}

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

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Cards */
.card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

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

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto;
    gap: 1.5rem;
}

.progress-card {
    grid-row: span 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding: 1rem;
}

.activity-card,
.insights-preview {
    grid-column: 2;
}

/* Progress Card */
.chart-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.metric-toggles {
    display: flex;
    gap: 0.75rem;
}

.metric-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
}

.metric-toggle:hover {
    color: var(--text-primary);
}

.metric-toggle input[type="checkbox"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 4px;
    background: var(--bg-card);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.metric-toggle input[type="checkbox"]:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.metric-toggle input[type="checkbox"]:checked {
    background: var(--gradient-primary);
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 212, 170, 0.3);
}

.metric-toggle input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-primary);
    font-size: 12px;
    font-weight: bold;
}

.metric-toggle input[type="checkbox"]:checked + span {
    color: var(--primary);
    font-weight: 600;
}

.time-selector {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.time-btn {
    padding: 0.75rem 1.25rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.time-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.time-btn:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.time-btn:hover::before {
    left: 0;
}

.time-btn.active {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-change {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-muted);
}

.stat-change.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
}

.progress-chart {
    height: 300px;
    position: relative;
}

/* Quick Stats */
.quick-stat {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    background: var(--gradient-card);
    border: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.quick-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left 0.6s ease;
}

.quick-stat:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.quick-stat:hover::before {
    left: 100%;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
}

.stat-icon.calories {
    background: linear-gradient(135deg, var(--warning) 0%, #e17055 100%);
    box-shadow: 0 0 20px rgba(253, 203, 110, 0.3);
}

.stat-icon.protein {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--danger) 100%);
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.3);
}

.stat-icon.water {
    background: linear-gradient(135deg, var(--accent) 0%, #74b9ff 100%);
    box-shadow: 0 0 20px rgba(78, 205, 196, 0.3);
}

.stat-icon.sleep {
    background: linear-gradient(135deg, #a29bfe 0%, #6c5ce7 100%);
    box-shadow: 0 0 20px rgba(162, 155, 254, 0.3);
}

.stat-icon.steps {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.steps-stat {
    position: relative;
}

.log-steps-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.log-steps-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.quick-stat:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-icon::after {
    content: '';
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 6px;
    opacity: 0.9;
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

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

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2s infinite;
}

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

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Nutrition Layout */
.nutrition-layout,
.fitness-layout,
.insights-layout,
.chat-layout {
    max-width: 1200px;
    margin: 0 auto;
}

.nutrition-header,
.fitness-header,
.insights-header,
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.nutrition-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.date-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.date-nav-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.date-nav-btn:hover {
    background: var(--primary);
    color: var(--bg-primary);
    transform: scale(1.05);
}

#nutrition-date {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    outline: none;
    transition: all 0.3s ease;
}

#nutrition-date:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.data-generation {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.05) 0%, rgba(78, 205, 196, 0.05) 100%);
    border-color: var(--primary);
}

.section-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
}

/* Weight Logging */
.weight-logging {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.weight-log-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.weight-log-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.weight-log-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#weight-date,
#weight-input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.875rem;
    outline: none;
    transition: all 0.3s ease;
}

#weight-input {
    width: 120px;
}

#weight-date:focus,
#weight-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.weight-log-controls .btn-primary {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.nutrition-header h2,
.fitness-header h2,
.insights-header h2,
.chat-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nutrition-grid,
.fitness-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* Macro Rings */
.macro-overview {
    grid-column: span 2;
}

.food-log.full-width {
    grid-column: span 2;
}

.macro-rings {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
}

.macro-ring {
    position: relative;
    aspect-ratio: 1;
}

.ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-bg {
    fill: none;
    stroke: var(--border-light);
    stroke-width: 8;
}

.ring-progress {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    animation: ringLoad 2s ease-out forwards;
}

@keyframes ringLoad {
    0% {
        stroke-dashoffset: 283;
        opacity: 0.3;
    }
    50% {
        opacity: 0.7;
    }
    100% {
        opacity: 1;
    }
}

.macro-ring {
    position: relative;
    aspect-ratio: 1;
    animation: fadeInScale 0.8s ease-out forwards;
}

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

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

.macro-ring[data-macro="calories"] .ring-progress {
    stroke: var(--warning);
}

.macro-ring[data-macro="protein"] .ring-progress {
    stroke: var(--danger);
}

.macro-ring[data-macro="carbs"] .ring-progress {
    stroke: var(--primary);
}

.macro-ring[data-macro="fat"] .ring-progress {
    stroke: var(--accent);
}

.ring-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    animation: numberCount 2s ease-out forwards;
}

@keyframes numberCount {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0;
    }
    60% {
        transform: translate(-50%, -50%) scale(1.1);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
}

.ring-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.ring-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Food Log */
.meal-sections {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.meal-section {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    animation: slideInUp 0.6s ease-out forwards;
}

.meal-section:nth-child(1) { animation-delay: 0.1s; }
.meal-section:nth-child(2) { animation-delay: 0.2s; }
.meal-section:nth-child(3) { animation-delay: 0.3s; }
.meal-section:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInUp {
    0% {
        transform: translateY(30px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.meal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.meal-header h4 {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.add-food-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow);
}

.add-food-btn:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-glow);
}

.add-meal-btn {
    width: 100%;
    padding: 1rem;
    border: 2px dashed var(--border);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.add-meal-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 212, 170, 0.05);
    transform: translateY(-2px);
}

.food-items {
    padding: 1.25rem;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.empty-meal {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 2rem;
}

.food-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.food-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    transform: translateX(4px);
}

.food-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.food-name {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

.food-macros {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.macro-item {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--bg-primary);
    transition: all 0.2s ease;
}

.macro-item.calories {
    background: var(--warning);
}

.macro-item.protein {
    background: var(--danger);
}

.macro-item.carbs {
    background: var(--primary);
}

.macro-item.fat {
    background: var(--accent);
}

.macro-item.legacy {
    background: var(--text-muted);
    font-style: italic;
    font-weight: 400;
}

.remove-food-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: var(--danger);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.remove-food-btn:hover {
    opacity: 1;
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(232, 67, 147, 0.4);
}

.food-item:not(:hover) .remove-food-btn {
    opacity: 0;
}

/* Notes App Layout */
.notes-app {
    display: grid;
    grid-template-columns: 320px 1fr;
    height: 700px;
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    animation: slideUp 0.6s ease-out;
}

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

/* Sidebar */
.notes-sidebar {
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: relative;
}

.notes-sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.folder-list {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-light);
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.875rem;
    position: relative;
    font-weight: 500;
    margin: 0.25rem 0;
}

.folder-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
    border-radius: 0 2px 2px 0;
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.folder-item:hover {
    background: var(--bg-card);
    transform: translateX(8px);
    box-shadow: var(--shadow);
}

.folder-item:hover::before {
    transform: scaleY(1);
}

.folder-item.active {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    transform: translateX(8px);
    box-shadow: var(--shadow-glow);
}

.folder-item.active::before {
    transform: scaleY(1);
}

.folder-item.create-folder {
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-light);
    padding-top: 1rem;
    color: var(--text-muted);
    font-style: italic;
}

.folder-item.create-folder:hover {
    background: var(--accent);
    color: white;
}

.folder-item.create-folder .folder-icon {
    background: currentColor;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-style: normal;
}

.folder-icon {
    width: 16px;
    height: 16px;
    background: currentColor;
    border-radius: 3px;
    opacity: 0.7;
}

.note-count {
    margin-left: auto;
    font-size: 0.75rem;
    opacity: 0.7;
}

.edit-folder {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-right: 6px;
    box-shadow: var(--shadow-sm);
}

.delete-folder {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-secondary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.folder-item:hover .edit-folder,
.folder-item:hover .delete-folder {
    opacity: 1;
    transform: scale(1);
}

.edit-folder:hover {
    transform: scale(1.2) rotate(15deg);
    box-shadow: 0 0 15px rgba(0, 212, 170, 0.5);
}

.delete-folder:hover {
    transform: scale(1.2) rotate(-15deg);
    box-shadow: 0 0 15px rgba(255, 107, 107, 0.5);
}

.folder-edit-input {
    background: var(--bg-primary);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-size: 0.875rem;
    outline: none;
    width: 120px;
}

/* Notes List */
.notes-list {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.notes-list-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.search-container {
    margin-bottom: 0.75rem;
}

.search-container input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: var(--bg-primary);
}

.sort-container select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: var(--bg-primary);
}

.notes-items {
    flex: 1;
    overflow-y: auto;
}

.note-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.note-item:hover {
    background: var(--bg-tertiary);
}

.note-item.active {
    background: var(--primary);
    color: white;
}

.note-item-title {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.note-item-preview {
    font-size: 0.75rem;
    opacity: 0.7;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.note-item-date {
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 0.25rem;
}

/* Editor */
.notes-editor {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

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

.editor-actions {
    display: flex;
    gap: 0.5rem;
}

.editor-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.empty-editor {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-editor h3 {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.note-editor {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 100%;
}

.note-title-input {
    font-size: 1.25rem;
    font-weight: 600;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-light);
}

.note-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.note-meta select {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    background: var(--bg-secondary);
}

.note-content-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.6;
    resize: none;
    font-family: inherit;
}

.empty-notes-list {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.875rem;
}

/* Chat Layout */
.chat-layout {
    max-width: 900px;
    margin: 0 auto;
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 700px;
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    animation: slideUp 0.6s ease-out;
}

/* Chat Header */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-avatar {
    position: relative;
}

.ai-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--shadow-glow);
    animation: avatarPulse 3s ease-in-out infinite;
}

.ai-avatar.small {
    width: 32px;
    height: 32px;
}

@keyframes avatarPulse {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50% { box-shadow: 0 0 30px rgba(0, 212, 170, 0.6); }
}

.ai-brain {
    display: flex;
    gap: 3px;
    align-items: center;
}

.brain-dot {
    width: 4px;
    height: 4px;
    background: var(--bg-primary);
    border-radius: 50%;
    animation: brainThink 1.5s ease-in-out infinite;
}

.brain-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.brain-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes brainThink {
    0%, 60%, 100% { opacity: 0.3; transform: scale(1); }
    30% { opacity: 1; transform: scale(1.2); }
}

.online-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background: var(--success);
    border: 2px solid var(--bg-tertiary);
    border-radius: 50%;
    animation: onlinePulse 2s ease-in-out infinite;
}

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

.contact-details {
    flex: 1;
}

.contact-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.contact-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0.25rem 0 0 0;
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
}

.chat-action-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.chat-action-btn svg {
    width: 18px;
    height: 18px;
}

.chat-action-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.05);
}

/* Messages Area */

.chat-messages {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(0, 212, 170, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(78, 205, 196, 0.02) 0%, transparent 50%);
}

.message {
    display: flex;
    gap: 1rem;
    max-width: 85%;
    animation: messageSlide 0.4s ease-out;
}

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

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

.message-avatar {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.user-message .message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-secondary);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-weight: 700;
    font-size: 0.9rem;
}

.user-message .message-avatar::after {
    content: 'Y';
}

.message-content {
    background: var(--bg-tertiary);
    padding: 0.875rem 1.125rem;
    border-radius: 18px 18px 18px 4px;
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    max-width: 70%;
    position: relative;
}

.message-content p {
    margin: 0;
    line-height: 1.4;
}

.message-time {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    opacity: 0.7;
}

.user-message .message-content {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 18px 18px 4px 18px;
    border-color: var(--primary);
}

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

/* Typing Indicator */
.typing-indicator {
    padding: 0 1.5rem 1rem;
    animation: fadeIn 0.3s ease;
}

.message-content.typing {
    background: var(--bg-tertiary);
    padding: 1rem 1.25rem;
    border-radius: 18px 18px 18px 4px;
}

.typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.chat-input-container {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--bg-tertiary);
}

.chat-input {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    background: var(--bg-card);
    border-radius: 25px;
    padding: 0.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.chat-input:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.chat-input input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    font-size: 0.875rem;
    outline: none;
    color: var(--text-primary);
}

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

.send-btn {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow);
}

.send-btn:hover {
    transform: scale(1.05) rotate(15deg);
    box-shadow: var(--shadow-glow);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn svg {
    width: 20px;
    height: 20px;
    transform: translateX(1px);
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.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 0.6s ease;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-glow);
}

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

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

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

.btn-warning {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--gradient-secondary);
    color: var(--bg-primary);
    box-shadow: var(--shadow);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.4);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-modal {
    max-width: 700px;
    max-height: 90vh;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

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

.modal-content {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: calc(90vh - 120px);
}

/* Profile Modal Styles */
.profile-sections {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.profile-section {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.profile-section h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

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

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .profile-modal {
        max-width: 95%;
        margin: 1rem;
    }
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    outline: none;
    transition: all 0.3s ease;
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.form-group input:disabled,
.form-group select:disabled {
    background: var(--bg-secondary);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
    border-color: var(--border-light);
}

.form-group input:disabled::placeholder {
    color: var(--text-muted);
    opacity: 0.5;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Loading States */
.loading-skeleton {
    height: 120px;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-card) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    border-radius: var(--radius);
    animation: skeletonShimmer 2s infinite;
    position: relative;
    overflow: hidden;
}

.loading-skeleton::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.1), transparent);
    animation: skeletonGlow 2s infinite;
}

@keyframes skeletonShimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

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

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--bg-tertiary);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
    position: relative;
}

.loading-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 1s ease-in-out infinite alternate;
}

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

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
    100% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

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

/* Insights Content */
.insights-content {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

.insight-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.insight-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.insight-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
}

.insight-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
}

.insight-content {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
    white-space: pre-line;
}

.recommendation-list {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.recommendation-item {
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    font-size: 0.95rem;
    line-height: 1.6;
    transition: all 0.2s ease;
}

.recommendation-item:hover {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--border-light) 100%);
    transform: translateX(4px);
}

.progress-assessment {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.1) 100%);
    border-left-color: var(--primary);
}

.recommendations-section {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.1) 100%);
    border-left-color: var(--accent);
}

.activity-section {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0.1) 100%);
    border-left-color: var(--warning);
}

.challenges-section {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.1) 100%);
    border-left-color: var(--danger);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .weight-log-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .weight-log-controls {
        justify-content: center;
    }
    
    .progress-card {
        grid-row: span 1;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nutrition-grid,
    .fitness-grid {
        grid-template-columns: 1fr;
    }
    
    .macro-rings {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .food-log.full-width {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-bar {
        padding: 1rem;
    }
    
    .weight-log-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    #weight-input {
        width: 100%;
    }
    
    .nav-tabs {
        display: none;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .progress-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .macro-rings {
        grid-template-columns: 1fr;
    }
    
    .notes-app {
        grid-template-columns: 250px 1fr;
    }
    
    .notes-sidebar {
        min-width: 250px;
    }
}

@media (max-width: 640px) {
    .notes-app {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .notes-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        max-height: 200px;
    }
    
    .folder-list {
        display: flex;
        overflow-x: auto;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    
    .folder-item {
        white-space: nowrap;
        flex-shrink: 0;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Toggle Switch */
.toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    gap: 1rem;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    min-width: 0;
}

.toggle-label input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--bg-secondary);
    border-radius: 13px;
    border: 2px solid var(--border-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    flex-shrink: 0;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider {
    background: var(--gradient-primary);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 212, 170, 0.4);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(22px);
    background: var(--bg-primary);
    box-shadow: var(--shadow);
}

.toggle-container:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
}

.toggle-label:hover .toggle-slider {
    transform: scale(1.02);
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: help;
    font-size: 12px;
    color: var(--bg-primary);
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.tooltip:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.tooltip::before {
    content: attr(title);
    position: absolute;
    bottom: 140%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-card);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 500;
    width: 280px;
    text-align: left;
    line-height: 1.4;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: 130%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--bg-card);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

.tooltip:hover::after {
    transform: translateX(-50%) translateY(0);
}

/* Notifications */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    z-index: 10000;
    animation: notificationSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 300px;
}

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

.notification-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.9) 0%, rgba(5, 150, 105, 0.9) 100%);
    border-color: var(--success);
}

.notification-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.9) 0%, rgba(220, 38, 127, 0.9) 100%);
    border-color: var(--danger);
}

.notification-info {
    background: var(--gradient-primary);
    border-color: var(--primary);
    color: var(--bg-primary);
}

.notification-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.9) 0%, rgba(217, 119, 6, 0.9) 100%);
    border-color: var(--warning);
}

@media (max-width: 640px) {
    .btn-warning {
        width: 100%;
        margin-top: 0.5rem;
    }
}

/* Metric Detail Modal */
.metric-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.metric-stat-card {
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    text-align: center;
    border: 1px solid #dee2e6;
    transition: transform 0.2s ease;
}

.metric-stat-card:hover {
    transform: translateY(-2px);
}

.metric-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.metric-stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-stat-card:nth-child(2) .metric-stat-value {
    color: #28a745;
}

.metric-stat-card:nth-child(3) .metric-stat-value {
    color: #dc3545;
}

#metric-detail-chart {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 15px;
    border: 1px solid var(--border);
}

/* Scrollbar styles */
::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: transparent;
}

::-webkit-scrollbar-track {
    background: transparent;
}

/* Firefox */
* {
    scrollbar-width: none;
}

/* Macro Toggle Styles */
.macro-toggle-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.macro-toggle-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.macro-toggle-label:hover {
    color: var(--text-primary);
}

.macro-toggle-label input[type="checkbox"] {
    display: none;
}

.macro-toggle-label .toggle-slider {
    width: 36px;
    height: 20px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border);
    position: relative;
    transition: all 0.3s ease;
}

.macro-toggle-label .toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.macro-toggle-label input[type="checkbox"]:checked + .toggle-slider {
    background: var(--primary);
    border-color: var(--primary);
}

.macro-toggle-label input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(16px);
    background: white;
}

.macro-toggle-label input[type="checkbox"]:checked ~ span {
    color: var(--primary);
    font-weight: 600;
}

#set-macros-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-left: 0.5rem;
}

#set-macros-btn:hover {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
/* Food item actions */
.food-actions {
    display: flex;
    gap: 8px;
}

.edit-food-btn {
    background: transparent;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 18px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.edit-food-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.1);
}