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

:root {
    --bg-primary: #F9FAFB;
    --bg-header: linear-gradient(135deg, #1F2937 0%, #374151 100%);
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --accent: #3B82F6;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --purple: #8B5CF6;
    
    --day1-color: #3B82F6;
    --day2-color: #10B981;
    --day3-color: #8B5CF6;
    --day4-color: #F59E0B;
    --day5-color: #EF4444;
    --day6-color: #6B7280;
    
    --warmup-bg: #FEF3C7;
    --warmup-border: #F59E0B;
    --warmup-text: #92400E;
    
    --skill-bg: #E0E7FF;
    --skill-border: #6366F1;
    --skill-text: #3730A3;
    
    --main-bg: #FFFFFF;
    --main-border: #E5E7EB;
    --main-text: #111827;
    
    --accessory-bg: #F9FAFB;
    --accessory-border: #E5E7EB;
    --accessory-text: #374151;
    
    --optional-bg: #F9FAFB;
    --optional-border: #D1D5DB;
    --optional-text: #6B7280;
    
    --cardio-bg: #D1FAE5;
    --cardio-border: #10B981;
    --cardio-text: #065F46;
    
    --alt-bg: #FAFAFA;
    --alt-text: #9CA3AF;
    
    --safe-top: env(safe-area-inset-top);
    --safe-bottom: env(safe-area-inset-bottom);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

#app {
    max-width: 500px;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;
}

/* Header */
.header {
    background: var(--bg-header);
    padding: 16px;
    padding-top: calc(16px + var(--safe-top));
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.header-title h1 {
    color: white;
    font-size: 20px;
    font-weight: 600;
}

.header-title p {
    color: #9CA3AF;
    font-size: 12px;
}

/* User Toggle */
.user-toggle {
    display: flex;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: #9CA3AF;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.user-btn.active {
    background: var(--accent);
    color: white;
}

.user-emoji {
    font-size: 14px;
}

/* Day Tabs */
.day-tabs {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
}

.day-tabs::-webkit-scrollbar {
    display: none;
}

.day-tab {
    flex-shrink: 0;
    min-width: 56px;
    padding: 10px 12px;
    border: none;
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
    color: #9CA3AF;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    text-align: center;
}

.day-tab.active {
    color: white;
}

.day-tab.completed {
    border: 1px solid currentColor;
}

.day-tab.completed::after {
    content: '✓';
    position: absolute;
    top: -4px;
    right: -4px;
    font-size: 10px;
    background: white;
    color: #1F2937;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.day-tab-num {
    display: block;
}

.day-tab-label {
    display: block;
    font-size: 9px;
    opacity: 0.8;
    margin-top: 2px;
}

.day-hint {
    color: #6B7280;
    font-size: 11px;
    text-align: center;
    margin-top: 8px;
}

/* Main Content */
.main-content {
    padding: 16px;
    padding-bottom: calc(80px + var(--safe-bottom));
}

.day-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.day-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.user-indicator {
    font-size: 28px;
}

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    margin-bottom: 8px;
}

.section-header span {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.section-header .line {
    flex: 1;
    height: 1px;
    background: #E5E7EB;
}

/* Exercise Cards */
.exercise-card {
    margin-bottom: 8px;
}

.exercise-main {
    padding: 12px;
    border-radius: 8px;
    border-left: 3px solid;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.exercise-main.warmup {
    background: var(--warmup-bg);
    border-color: var(--warmup-border);
}

.exercise-main.skill {
    background: var(--skill-bg);
    border-color: var(--skill-border);
}

.exercise-main.main {
    background: var(--main-bg);
    border-color: var(--main-border);
}

.exercise-main.accessory {
    background: var(--accessory-bg);
    border-color: var(--accessory-border);
}

.exercise-main.optional {
    background: var(--optional-bg);
    border-color: var(--optional-border);
}

.exercise-main.cardio {
    background: var(--cardio-bg);
    border-color: var(--cardio-border);
}

.exercise-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.exercise-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
}

.exercise-name {
    font-size: 14px;
    font-weight: 500;
}

.exercise-main.warmup .exercise-name { color: var(--warmup-text); }
.exercise-main.skill .exercise-name { color: var(--skill-text); }
.exercise-main.main .exercise-name { color: var(--main-text); }
.exercise-main.accessory .exercise-name { color: var(--accessory-text); }
.exercise-main.optional .exercise-name { color: var(--optional-text); }
.exercise-main.cardio .exercise-name { color: var(--cardio-text); }

.note-btn {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.1);
    color: #6B7280;
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.exercise-metrics {
    display: flex;
    align-items: center;
    gap: 10px;
}

.exercise-sets {
    font-size: 12px;
    color: var(--text-muted);
}

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

.weight-btn {
    padding: 6px 10px;
    border: none;
    border-radius: 6px;
    background: var(--accent);
    color: white;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    min-width: 60px;
}

/* Alternative Exercise */
.exercise-alt {
    margin-left: 16px;
    margin-top: 4px;
    padding: 8px 12px;
    background: var(--alt-bg);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.alt-info {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--alt-text);
    font-size: 12px;
}

.alt-arrow {
    opacity: 0.5;
}

.alt-weight-btn {
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    background: #E5E7EB;
    color: #374151;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
}

/* Feedback Button */
.feedback-btn {
    width: 100%;
    margin-top: 24px;
    padding: 14px;
    border: 1px dashed #D1D5DB;
    border-radius: 10px;
    background: white;
    color: #374151;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Settings FAB */
.settings-fab {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    right: 20px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: #1F2937;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 50;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: flex-end;
    justify-content: center;
    z-index: 200;
}

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

.modal {
    width: 100%;
    max-width: 500px;
    max-height: 85vh;
    background: white;
    border-radius: 20px 20px 0 0;
    padding: 20px;
    overflow-y: auto;
}

.modal-sm {
    max-height: 50vh;
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: #F3F4F6;
    border-radius: 50%;
    font-size: 20px;
    color: #6B7280;
    cursor: pointer;
}

/* Feedback Modal */
.feedback-field {
    margin-bottom: 16px;
}

.feedback-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.emoji-scale {
    display: flex;
    gap: 8px;
}

.emoji-scale button {
    flex: 1;
    padding: 10px;
    border: 2px solid transparent;
    border-radius: 10px;
    background: #F3F4F6;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.emoji-scale button.active {
    background: #DBEAFE;
    border-color: var(--accent);
}

.performance-scale {
    display: flex;
    gap: 8px;
}

.performance-scale button {
    flex: 1;
    padding: 10px 8px;
    border: 2px solid transparent;
    border-radius: 8px;
    background: #F3F4F6;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s;
}

.performance-scale button.active {
    border-color: #374151;
}

.performance-scale button[data-value="tough"].active { background: #FEE2E2; }
.performance-scale button[data-value="ok"].active { background: #FEF3C7; }
.performance-scale button[data-value="good"].active { background: #D1FAE5; }
.performance-scale button[data-value="great"].active { background: #DBEAFE; }

.feedback-field input,
.feedback-field textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}

.feedback-field textarea {
    resize: none;
    min-height: 80px;
}

.save-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: var(--accent);
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

/* Weight Modal */
.weight-history {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.weight-chip {
    padding: 8px 12px;
    border-radius: 8px;
    background: #F3F4F6;
    font-size: 13px;
    color: #6B7280;
}

.weight-chip.current {
    background: #DBEAFE;
    color: #1D4ED8;
    font-weight: 600;
}

.weight-chip.start {
    position: relative;
}

.weight-chip.start::before {
    content: '🏁 ';
}

.add-weight {
    display: flex;
    gap: 8px;
}

.add-weight input {
    flex: 1;
    padding: 12px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 14px;
}

.add-weight button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
}

/* Settings View */
.settings-view {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 150;
    display: none;
    overflow-y: auto;
    padding: 20px;
    padding-top: calc(20px + var(--safe-top));
    padding-bottom: calc(20px + var(--safe-bottom));
}

.settings-view.active {
    display: block;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.settings-header h2 {
    font-size: 24px;
    font-weight: 700;
}

.settings-section {
    margin-bottom: 32px;
}

.settings-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.settings-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.reserve-category {
    background: white;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
}

.reserve-category h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.reserve-category ul {
    list-style: none;
}

.reserve-category li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #F3F4F6;
    font-size: 14px;
}

.reserve-category li:last-child {
    border-bottom: none;
}

.reserve-delete {
    border: none;
    background: none;
    color: var(--danger);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
}

.add-reserve {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.add-reserve input {
    flex: 1;
    padding: 10px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 13px;
}

.add-reserve button {
    width: 40px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-size: 18px;
    cursor: pointer;
}

.settings-btn {
    width: 100%;
    padding: 14px;
    border: 1px solid #E5E7EB;
    border-radius: 10px;
    background: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 8px;
}

.settings-btn.danger {
    color: var(--danger);
    border-color: var(--danger);
}

/* Note Modal */
#note-content {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}