/**
 * Workout Tracker v2 - Redesigned Styles
 * Based on Gemini design mockup
 */

:root {
    --bg: #0a0a0a;
    --surface: #141414;
    --surface-elevated: #1a1a1a;
    --border: #2a2a2a;
    --text: #e0e0e0;
    --text-dim: #888;
    --accent: #ff6b35;
    --accent-hover: #ff8555;
    --success: #4ade80;
    --error: #ef4444;
    --warning: #f59e0b;
    --input-bg: #0f0f0f;
}

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

body {
    font-family: 'Space Mono', monospace;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

/* App Layout */
.app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content {
    flex: 1;
    padding: 16px;
    padding-bottom: 100px;
}

/* Navigation */
nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    max-width: 480px;
    margin: 0 auto;
}

.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 10px;
    transition: color 0.2s;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.nav-btn svg {
    width: 22px;
    height: 22px;
}

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

/* Typography */
h1 {
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

h2 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--text-dim);
}

h3 {
    font-size: 13px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

/* Flash Messages */
.flash {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13px;
}

.flash-success {
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.flash-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.card-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}

.btn:hover {
    background: var(--surface-elevated);
    border-color: var(--accent);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

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

.btn-success {
    background: var(--success);
    border-color: var(--success);
    color: #000;
}

.btn-success:hover {
    background: #3ec46e;
}

.btn-danger {
    background: transparent;
    border-color: var(--error);
    color: var(--error);
}

.btn-secondary {
    background: var(--surface-elevated);
    border-color: var(--border);
    color: var(--text);
}

.btn-small {
    padding: 10px 16px;
    font-size: 11px;
    width: auto;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 8px;
}

.btn-row {
    display: flex;
    gap: 8px;
}

.btn-row .btn {
    flex: 1;
}

.btn-chevron::after {
    content: '›';
    margin-left: auto;
    font-size: 18px;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 14px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Dashboard Specific */
.welcome-banner {
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13px;
}

.workout-in-progress-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.workout-in-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.workout-in-progress-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.workout-in-progress-time {
    font-size: 11px;
    color: var(--text-dim);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.stat-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-top: 8px;
}

/* Recent Workouts */
.recent-workouts-title {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 12px;
    margin-top: 24px;
}

.recent-workout-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

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

.recent-workout-info {
    flex: 1;
}

.recent-workout-date {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.recent-workout-meta {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 4px;
}

.recent-workout-chevron {
    color: var(--text-dim);
    font-size: 20px;
}

/* Routines - Polished Design from Mockup */
.routines-header {
    margin-bottom: 20px;
}

.routine-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    transition: border-color 0.2s, transform 0.1s;
}

.routine-card:hover {
    border-color: var(--accent);
}

.routine-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.routine-card-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text);
    letter-spacing: 0.5px;
}

.routine-card-chevron {
    color: var(--text-dim);
    font-size: 20px;
    line-height: 1;
}

.routine-card-description {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 12px;
    line-height: 1.5;
}

.routine-card-exercises {
    list-style: none;
    padding-left: 0;
    margin-bottom: 16px;
}

.routine-card-exercises li {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 6px;
    padding-left: 16px;
    position: relative;
}

.routine-card-exercises li::before {
    content: '•';
    position: absolute;
    left: 4px;
    color: var(--accent);
}

.routine-card-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.routine-card-actions .btn-primary {
    flex: 1;
    background: var(--accent);
    border-color: var(--accent);
    font-weight: 700;
    letter-spacing: 1px;
}

.routine-card-actions .btn-secondary {
    flex: 0 0 auto;
    min-width: 60px;
    background: transparent;
    border-color: var(--border);
    color: var(--text-dim);
}

.routine-card-actions .btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.routine-card-actions .btn-icon {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 8px;
    background: transparent;
    border-color: var(--border);
    color: var(--text-dim);
    font-size: 18px;
    line-height: 1;
}

.routine-card-actions .btn-icon:hover {
    border-color: var(--error);
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

/* Routine Menu Button (three dots) */
.routine-menu-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    border-radius: 6px;
    font-size: 18px;
    letter-spacing: 2px;
}

.routine-menu-btn:hover {
    background: var(--surface-elevated);
    color: var(--text);
}

/* Workout Log */
.exercise-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
}

.exercise-card-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.exercise-card-subtitle {
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 12px;
}

.set-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.set-label {
    font-size: 12px;
    color: var(--text-dim);
    width: 50px;
    text-transform: uppercase;
}

.set-input {
    width: 60px;
    padding: 10px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: inherit;
    font-size: 13px;
    text-align: center;
}

.set-input:focus {
    outline: none;
    border-color: var(--accent);
}

.set-unit {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
}

.set-check {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    cursor: pointer;
    transition: all 0.2s;
}

.set-check:hover {
    border-color: var(--success);
}

.set-check.completed {
    background: rgba(74, 222, 128, 0.2);
    border-color: var(--success);
}

.set-check svg {
    width: 20px;
    height: 20px;
    color: var(--success);
}

.btn-add-set {
    background: rgba(255, 107, 53, 0.1);
    border-color: rgba(255, 107, 53, 0.3);
    color: var(--text);
}

.btn-add-set:hover {
    background: rgba(255, 107, 53, 0.2);
    border-color: var(--accent);
}

.add-exercise-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-top: 24px;
}

.add-exercise-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.finish-workout-btn {
    margin-top: 24px;
}

/* Goals */
.goals-empty {
    text-align: center;
    padding: 60px 20px;
}

.goals-empty-text {
    font-size: 14px;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.goals-empty-subtext {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 24px;
}

/* Stats */
.stats-section-title {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    margin: 24px 0 12px;
}

.exercise-stat-list {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.exercise-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

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

.exercise-stat-name {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.exercise-stat-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
}

/* Empty State */
.empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-dim);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 400px) {
    .content {
        padding: 12px;
    }
    
    .nav-btn {
        padding: 6px 8px;
        font-size: 10px;
    }
    
    .nav-btn svg {
        width: 20px;
        height: 20px;
    }
}

/* Workout List (History) */
.workout-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.workout-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, transform 0.1s;
}

.workout-list-item:hover {
    border-color: var(--accent);
}

.workout-list-content {
    flex: 1;
}

.workout-list-date {
    font-size: 12px;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.workout-list-name {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.workout-list-meta {
    font-size: 12px;
    color: var(--text-dim);
}

.workout-list-exercises {
    color: var(--text-dim);
}

.workout-list-chevron {
    color: var(--text-dim);
    font-size: 24px;
    margin-left: 12px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.pagination-info {
    padding: 8px 16px;
    color: var(--text-dim);
    font-size: 13px;
}

/* Workout Summary Card */
.workout-summary-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.workout-summary-date {
    font-size: 14px;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
}

/* Exercise Detail Card */
.exercise-detail-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
}

.exercise-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.exercise-detail-name {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
}

.exercise-detail-volume {
    font-size: 13px;
    color: var(--accent);
    font-weight: 700;
}

.exercise-detail-sets {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.exercise-detail-set {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--surface-elevated);
    border-radius: 8px;
    font-size: 13px;
}

.exercise-detail-set.completed {
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid var(--success);
}

.exercise-detail-set .set-number {
    color: var(--text-dim);
    text-transform: uppercase;
    font-size: 11px;
    min-width: 50px;
}

.exercise-detail-set .set-weight {
    font-weight: 700;
    min-width: 70px;
}

.exercise-detail-set .set-reps {
    color: var(--text-dim);
    flex: 1;
}

.exercise-detail-set .set-check {
    color: var(--success);
    font-weight: 700;
}

/* Print styles */
@media print {
    nav {
        display: none;
    }
    
    .content {
        padding-bottom: 16px;
    }
}

/* Stats Graph - Safari/iOS Flexbox Fix */
.stats-graph-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin: 24px 0;
    overflow: hidden;
}

.stats-graph-title {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.stats-graph-container {
    display: flex;
    gap: 6px;
    align-items: flex-end;
    height: 140px;
    padding: 8px 0 4px;
}

/* The key Safari/iOS fix: min-width: 0 allows flex items to shrink below content size */
.stats-graph-bar-wrapper {
    flex: 1 1 0%;              /* flex-grow: 1, flex-shrink: 1, flex-basis: 0% */
    min-width: 0;              /* CRITICAL: allows shrinking below content size */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 100%;
}

.stats-graph-value {
    font-size: 9px;
    color: var(--text-dim);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.stats-graph-bar {
    width: 100%;
    max-width: 40px;
    background: linear-gradient(to top, var(--accent), var(--accent-hover));
    border-radius: 3px 3px 0 0;
    min-height: 4px;
    flex-shrink: 0;            /* Don't shrink the bar itself */
}

.stats-graph-count {
    font-size: 11px;
    color: var(--text);
    font-weight: 600;
    margin-top: 6px;
    text-align: center;
}

.stats-graph-month {
    font-size: 8px;
    color: var(--text-dim);
    text-align: center;
    line-height: 1.2;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}