/* ============================================
   CUT TRACKER - Dark Theme CSS
   ============================================ */

:root {
    --primary: #1DB954;
    --primary-hover: #1ed760;
    --secondary: #FF006E;
    --accent: #00D9FF;
    --danger: #FF4757;
    --bg-primary: #0F0F0F;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #2A2A2A;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-tertiary: #808080;
    --border: #333333;
    --card-bg: #161616;
    --hover-bg: #242424;
    --success: #1DB954;
    --warning: #FFA502;
    --error: #FF4757;
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* ============================================
   APP LAYOUT
   ============================================ */

.app-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* SIDEBAR */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-header {
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--primary);
}

.app-title {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: -2px;
    color: var(--primary);
    line-height: 1;
}

.app-subtitle {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
}

.nav-btn .icon {
    font-size: 18px;
}

/* MAIN CONTENT */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 30px;
    margin-bottom: 80px;
    overflow-y: auto;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.mobile-topbar {
    display: none;
}

.menu-toggle {
    display: none;
}

/* QUICK ACTIONS */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 40px;
}

.quick-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border: none;
    color: var(--bg-primary);
    padding: 16px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    font-size: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.quick-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.3);
}

.quick-icon {
    font-size: 20px;
}

/* CONTENT WRAPPER */
.content-wrapper {
    display: flex;
    flex-direction: column;
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

.content-section h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.section-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* ============================================
   DASHBOARD
   ============================================ */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    background: var(--hover-bg);
    border-color: var(--primary);
    transform: translateY(-4px);
}

.stat-card h3 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-card .stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .stat-info {
    font-size: 12px;
    color: var(--text-secondary);
}

.stat-card .stat-remaining {
    font-size: 12px;
    color: var(--primary);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-hover) 100%);
    transition: width 0.5s ease;
    border-radius: 4px;
}

.calories-card .progress-fill {
    background: linear-gradient(90deg, #FF6B6B 0%, #FF8E8E 100%);
}

.protein-card .progress-fill {
    background: linear-gradient(90deg, #4ECDC4 0%, #44B4A8 100%);
}

.carbs-card .progress-fill {
    background: linear-gradient(90deg, #FFD93D 0%, #FFC300 100%);
}

.fats-card .progress-fill {
    background: linear-gradient(90deg, #A8E6CF 0%, #7FCDBB 100%);
}

.water-card .progress-fill {
    background: linear-gradient(90deg, #00D9FF 0%, #0088FF 100%);
}

.weight-card .progress-fill {
    background: linear-gradient(90deg, #FF006E 0%, #D20562 100%);
}

.stat-card.over-limit .progress-fill {
    background: linear-gradient(90deg, var(--error) 0%, #D32F2F 100%) !important;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* WEEK SUMMARY */
.week-summary {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
}

.week-summary h3 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-item label {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
}

.summary-item span {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.summary-status {
    padding: 12px 16px;
    background: var(--hover-bg);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
}

/* ============================================
   CARDS & COMPONENTS
   ============================================ */

.food-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.food-item {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: start;
}

.food-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.food-name {
    font-weight: 600;
    color: var(--text-primary);
}

.food-macros {
    font-size: 12px;
    color: var(--text-secondary);
}

.food-actions {
    display: flex;
    gap: 8px;
}

.food-actions button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.food-actions button:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
}

.meals-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.meal-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.meal-section h3 {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.empty-state {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ============================================
   WATER TRACKER
   ============================================ */

.water-tracker {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.water-display {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.water-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: conic-gradient(var(--primary) var(--water-progress, 0%), var(--bg-tertiary) 0%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 217, 255, 0.2);
    position: relative;
}

.water-circle::before {
    content: '';
    width: 90%;
    height: 90%;
    border-radius: 50%;
    background: var(--bg-primary);
    position: absolute;
}

.water-value {
    position: relative;
    z-index: 1;
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.water-value small {
    font-size: 14px;
    color: var(--text-secondary);
}

.water-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.btn-water {
    background: linear-gradient(135deg, var(--accent) 0%, #0088FF 100%);
    border: none;
    color: var(--bg-primary);
    padding: 16px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-water:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.3);
}

.water-actions {
    display: flex;
    gap: 12px;
}

.water-log {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.water-log h3 {
    margin-bottom: 12px;
}

.water-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   SUPPLEMENTS
   ============================================ */

.supplements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.supplement-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.supplement-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.supplement-name {
    font-weight: 600;
    color: var(--text-primary);
}

.supplement-dose {
    font-size: 12px;
    color: var(--text-secondary);
}

.supplement-checkbox {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid var(--border);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.3s ease;
}

.supplement-checkbox:hover {
    border-color: var(--primary);
}

.supplement-checkbox.taken {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--bg-primary);
}

.supplement-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.supplement-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.supplement-actions button {
    flex: 1;
    padding: 6px;
    font-size: 12px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.supplement-actions button:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

/* CAFFEINE */
.caffeine-overview {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    margin-bottom: 20px;
}

.caffeine-display {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.caffeine-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.caffeine-limit {
    font-size: 14px;
    color: var(--text-secondary);
}

.caffeine-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    margin-top: 12px;
}

.caffeine-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--warning) 100%);
    transition: width 0.5s ease;
}

.caffeine-fill.over-limit {
    background: linear-gradient(90deg, var(--warning) 0%, var(--error) 100%);
    animation: pulse 1s infinite;
}

.stimulants-list {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.stimulants-list h3 {
    margin-bottom: 12px;
}

#stimulants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.stimulant-item {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stimulant-info {
    flex: 1;
}

.stimulant-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stimulant-dose {
    font-size: 12px;
    color: var(--text-secondary);
}

.stimulant-checkbox {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border);
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.stimulant-checkbox:hover {
    border-color: var(--primary);
}

.stimulant-checkbox.taken {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--bg-primary);
}

.caffeine-log {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.caffeine-log h3 {
    margin-bottom: 12px;
}

#caffeine-history {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.caffeine-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    background: var(--hover-bg);
    border-radius: 6px;
    font-size: 13px;
}

/* ============================================
   TRAINING
   ============================================ */

.training-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.training-history {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.training-history h3 {
    margin-bottom: 12px;
}

#training-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.training-item {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
}

.training-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.training-type {
    font-weight: 600;
    color: var(--text-primary);
}

.training-meta {
    font-size: 12px;
    color: var(--text-secondary);
}

.training-actions {
    display: flex;
    gap: 8px;
}

.training-actions button {
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.training-actions button:hover {
    background: var(--hover-bg);
    color: var(--primary);
}

/* ============================================
   PROGRESS
   ============================================ */

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.stat-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-box label {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-box span {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.measurements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.measurement-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.measurement-card h3 {
    margin-bottom: 12px;
}

.measurement-card canvas {
    width: 100%;
}

.measurements-history {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.measurements-history h3 {
    margin-bottom: 12px;
}

#measurements-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.measurement-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 8px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   CALENDAR
   ============================================ */

.calendar-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calendar-header button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
}

.calendar-header button:hover {
    background: var(--hover-bg);
    border-color: var(--primary);
}

.calendar-header h3 {
    flex: 1;
    text-align: center;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.calendar-weekdays div {
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 8px;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day {
    aspect-ratio: 1;
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
    padding: 4px;
    text-align: center;
}

.calendar-day:hover {
    border-color: var(--primary);
    background: var(--bg-tertiary);
}

.calendar-day.other-month {
    opacity: 0.3;
    cursor: default;
}

.calendar-day.today {
    border: 2px solid var(--primary);
    background: rgba(29, 185, 84, 0.1);
}

.calendar-day-number {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.calendar-day-icons {
    display: flex;
    gap: 2px;
    font-size: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.calendar-legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.legend-item {
    font-size: 13px;
    color: var(--text-secondary);
}

.day-details {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

/* ============================================
   NOTES
   ============================================ */

.notes-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.note-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.note-date {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.note-text {
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.6;
}

.note-ratings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.note-rating {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}

.note-rating label {
    color: var(--text-secondary);
}

.note-rating span {
    color: var(--primary);
    font-weight: 600;
}

.note-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.note-actions button {
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.note-actions button:hover {
    background: var(--hover-bg);
    color: var(--primary);
}

/* ============================================
   PROFILE & FORMS
   ============================================ */

.profile-form {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-tertiary);
}

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

#profile-form > button {
    grid-column: 1 / -1;
}

/* ============================================
   BUTTONS & UTILITIES
   ============================================ */

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.3);
}

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

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

.btn-danger {
    background: linear-gradient(135deg, var(--error) 0%, #D32F2F 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 71, 87, 0.3);
}

.warning {
    color: var(--warning);
    font-size: 12px;
    margin-top: 8px;
}

/* ============================================
   MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
}

.modal-header h3 {
    font-size: 18px;
    color: var(--text-primary);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.modal-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

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

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border);
    justify-content: flex-end;
    position: sticky;
    bottom: 0;
    background: var(--card-bg);
}

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

.ratings-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.rating-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rating-item label {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
}

.rating-item input[type="range"] {
    width: 100%;
    cursor: pointer;
}

.rating-item span {
    text-align: center;
    font-weight: 600;
    color: var(--primary);
}

#food-database-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    max-height: 300px;
    overflow-y: auto;
}

.food-db-item {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.food-db-item:hover {
    border-color: var(--primary);
    background: var(--bg-tertiary);
}

.food-db-item-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-size: 12px;
}

.food-db-item-macro {
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    justify-content: center;
    gap: 4px;
}

#search-food {
    width: 100%;
    padding: 10px 12px;
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

#search-food:focus {
    outline: none;
    border-color: var(--primary);
}

.backup-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

.backup-section h3 {
    margin-bottom: 16px;
}

.backup-section .btn {
    display: block;
    width: 100%;
    margin-bottom: 8px;
}

.backup-section .btn:last-of-type {
    margin-bottom: 0;
}

#import-file {
    width: 100%;
    padding: 10px;
    margin-bottom: 12px;
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
}

/* ============================================
   MOBILE NAVIGATION
   ============================================ */

.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    z-index: 900;
}

.bottom-nav-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bottom-nav-btn:hover,
.bottom-nav-btn.active {
    color: var(--primary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }

    .main-content {
        margin-left: 240px;
    }

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

    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        transition: left 0.3s ease;
        width: 280px;
        height: 100vh;
        z-index: 2000;
    }

    .sidebar.active {
        left: 0;
    }

    .main-content {
        margin-left: 0;
        padding: 80px 16px 100px;
    }

    .mobile-topbar {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
        z-index: 900;
    }

    #section-title {
        font-size: 18px;
    }

    .menu-toggle {
        background: transparent;
        border: none;
        color: var(--text-primary);
        font-size: 24px;
        cursor: pointer;
        padding: 0;
    }

    .bottom-nav {
        display: flex;
    }

    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
        margin-bottom: 20px;
    }

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

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

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

    .water-buttons {
        grid-template-columns: 1fr 1fr;
    }

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

    #stimulants-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

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

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

    .ratings-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .app-container {
        flex-direction: column;
    }

    .main-content {
        padding: 70px 12px 90px;
    }

    .quick-actions {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .quick-btn {
        flex-direction: row;
        justify-content: center;
        gap: 12px;
        padding: 12px;
    }

    .content-section h2 {
        font-size: 20px;
    }

    .stat-card .stat-value {
        font-size: 16px;
    }

    .water-circle {
        width: 140px;
        height: 140px;
    }

    .water-value {
        font-size: 18px;
    }

    .calendar-day {
        padding: 2px;
    }

    .calendar-day-number {
        font-size: 11px;
    }

    .calendar-day-icons {
        font-size: 8px;
    }

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

    .food-item {
        grid-template-columns: 1fr;
    }

    .food-actions {
        justify-content: space-between;
    }
}

/* ============================================
   EXERCISE TRACKING
   ============================================ */

.exercise-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.exercise-card:hover {
    background: var(--hover-bg);
    border-color: var(--primary);
}

.exercise-info h4 {
    color: var(--text-primary);
    margin-bottom: 4px;
}

.exercise-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

.exercise-actions {
    display: flex;
    gap: 8px;
}

/* ============================================
   FAVORITES
   ============================================ */

.favorites-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.favorites-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.favorites-section h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.favorite-item {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.favorite-item span {
    flex: 1;
    color: var(--text-primary);
    font-size: 14px;
}

.favorite-item button {
    padding: 4px 8px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.favorite-item button:hover {
    opacity: 0.8;
}

/* ============================================
   RECOVERY TRACKING
   ============================================ */

.recovery-tracker {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.recovery-item {
    margin-bottom: 16px;
}

.recovery-item label {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.toggle-group {
    display: flex;
    gap: 8px;
}

.toggle-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: var(--bg-primary);
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.3);
}

.recovery-stats {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.recovery-stats h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.recovery-entry {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 12px;
}

.recovery-date {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.recovery-stats {
    display: flex;
    gap: 8px;
    font-size: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.recovery-stats span {
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text-secondary);
}

.recovery-note {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 8px;
    font-style: italic;
}

/* ============================================
   ANALYTICS
   ============================================ */

.analytics-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.analytics-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.analytics-tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    cursor: pointer;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.analytics-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.analytics-tab {
    display: none;
}

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

.report-card {
    background: var(--hover-bg);
    border-radius: 8px;
    padding: 16px;
}

.report-card h4 {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.report-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.stat span {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.body-composition {
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-top: 20px;
}

.body-composition h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.body-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.body-stat {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.body-stat label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.body-stat input, .body-stat span {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================
   PHOTO GALLERY
   ============================================ */

.photos-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.photo-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.photo-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.2);
}

.photo-date {
    color: var(--primary);
    font-weight: 600;
    font-size: 12px;
    padding: 8px 12px;
}

.photo-note {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 0 12px 8px 12px;
    font-style: italic;
}

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.4);
}

/* ============================================
   LIGHT MODE
   ============================================ */

[data-theme="light"] {
    --primary: #1DB954;
    --primary-hover: #1ed760;
    --secondary: #FF006E;
    --accent: #00D9FF;
    --danger: #FF4757;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7F7F7;
    --bg-tertiary: #EEEEEE;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border: #E0E0E0;
    --card-bg: #FAFAFA;
    --hover-bg: #F0F0F0;
    --success: #1DB954;
    --warning: #FFA502;
    --error: #FF4757;
}

.template-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.template-card h4 {
    color: var(--text-primary);
    margin-bottom: 8px;
}

.template-card ul {
    list-style: none;
    margin-bottom: 12px;
}

.template-card li {
    color: var(--text-secondary);
    font-size: 12px;
    margin-bottom: 4px;
    padding-left: 16px;
}

.template-card li:before {
    content: "✓ ";
    color: var(--primary);
    margin-left: -12px;
}

/* Range Input Styling */
input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    transition: all 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(29, 185, 84, 0.5);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(29, 185, 84, 0.5);
}

/* Toggle Group */
.toggle-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Photo Preview */
#photo-preview {
    display: flex;
    justify-content: center;
    align-items: center;
}

#photo-preview img {
    max-width: 100%;
    max-height: 200px;
}

/* Additional Form Styling */
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    transition: all 0.2s;
}

.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-secondary);
}

.form-group textarea {
    min-height: 80px;
}

/* Rating Items */
.ratings-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.rating-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rating-item label {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
}

.rating-item span {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

@media (max-width: 768px) {
    .favorites-container {
        grid-template-columns: 1fr;
    }

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

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

    .photos-gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .theme-toggle {
        bottom: 90px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 20px;
    }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
}

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

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

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