/* CSS Variables */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --bg-card: #1e1e35;
    --accent-primary: #6c5ce7;
    --accent-secondary: #a29bfe;
    --accent-success: #00cec9;
    --accent-warning: #fdcb6e;
    --accent-danger: #ff7675;
    --text-primary: #ffffff;
    --text-secondary: #b2b2c8;
    --text-muted: #6c6c8a;
    --border-color: #2d2d4a;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --radius-sm: 8px;
    --nav-height: 70px;
    --header-height: 60px;
}

/* Auth Screen */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.auth-screen.hidden {
    display: none;
}

.auth-container {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-logo {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.auth-form {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.auth-form .form-group {
    text-align: left;
}

.auth-error {
    background: rgba(255, 118, 117, 0.1);
    border: 1px solid var(--accent-danger);
    color: var(--accent-danger);
    padding: 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.auth-switch {
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.auth-switch button {
    background: none;
    border: none;
    color: var(--accent-primary);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 4px;
}

.auth-loading {
    padding: 48px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 1s linear infinite;
}

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

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
    min-height: -webkit-fill-available;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: -webkit-fill-available;
}

/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: none;
    color: white;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.header-btn:active {
    transform: scale(0.95);
    background: var(--accent-secondary);
}

.header-btn.hidden {
    display: none;
}

/* Main Content */
main {
    flex: 1;
    padding: calc(var(--header-height) + 16px) 16px calc(var(--nav-height) + 16px);
    overflow-y: auto;
}

/* Views */
.view {
    display: none;
}

.view.active {
    display: block;
}

/* Sections */
.section {
    margin-bottom: 24px;
}

.section h2 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.section h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

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

.section-header h3 {
    margin-bottom: 0;
}

/* Dashboard Stats */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px 12px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Cards */
.workout-card, .session-card, .pr-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
}

.workout-card:active, .session-card:active {
    transform: scale(0.98);
    border-color: var(--accent-primary);
}

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

.workout-card h3, .session-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.workout-card .date, .session-card .date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.workout-card .exercises-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.workout-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.workout-card-actions button {
    flex: 1;
    padding: 8px;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.workout-card-actions button:active {
    opacity: 0.8;
}

.workout-card-actions .start-btn {
    background: var(--accent-primary);
    color: white;
}

.workout-card-actions .edit-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.workout-card-actions .delete-btn {
    background: transparent;
    color: var(--accent-danger);
    flex: 0;
    padding: 8px 12px;
}

/* PR Cards */
.pr-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pr-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    cursor: default;
}

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

.pr-card .pr-details {
    text-align: right;
}

.pr-card .pr-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-success);
}

.pr-card .pr-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

/* Empty States */
.empty-state {
    color: var(--text-muted);
    text-align: center;
    padding: 24px;
    font-size: 0.9rem;
}

.empty-state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.empty-state-container p {
    color: var(--text-muted);
    margin-bottom: 8px;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
}

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

/* Buttons */
.primary-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    width: 100%;
}

.primary-btn:active {
    background: var(--accent-secondary);
    transform: scale(0.98);
}

.secondary-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 14px 24px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
}

.secondary-btn:active {
    background: var(--bg-card);
}

.danger-btn {
    background: transparent;
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
    padding: 14px 24px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    margin-top: 8px;
}

.add-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
}

.full-width-btn {
    width: 100%;
    padding: 14px;
    background: var(--bg-tertiary);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
    margin-top: 12px;
}

.full-width-btn:active {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 200;
    overflow-y: auto;
    padding-bottom: 24px;
}

#exercise-picker,
#new-exercise-form {
    z-index: 300;
}

.modal-content {
    padding: 16px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    margin: -16px -16px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.back-btn, .save-btn {
    background: none;
    border: none;
    color: var(--accent-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    padding: 8px;
}

.save-btn {
    color: var(--accent-success);
}

/* Exercise List */
.exercise-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.exercise-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.2s;
}

.exercise-item:active {
    border-color: var(--accent-primary);
}

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

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

.exercise-item .muscle {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

.exercise-item .sets-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

.exercise-item .remove-btn {
    background: none;
    border: none;
    color: var(--accent-danger);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 8px;
}

/* Sets Editor */
.sets-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.set-row {
    display: grid;
    grid-template-columns: 40px 1fr 1fr 40px;
    gap: 8px;
    align-items: center;
    background: var(--bg-card);
    padding: 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.set-row .set-number {
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}

.set-row input {
    width: 100%;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
}

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

.set-row .remove-set-btn {
    background: none;
    border: none;
    color: var(--accent-danger);
    font-size: 1.2rem;
    cursor: pointer;
}

.set-labels {
    display: grid;
    grid-template-columns: 40px 1fr 1fr 40px;
    gap: 8px;
    padding: 0 12px;
    margin-bottom: 8px;
}

.set-labels span {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

/* Active Workout */
.workout-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.workout-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.workout-timer {
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', monospace;
    font-size: 1.1rem;
    color: var(--accent-success);
}

.exercise-log-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

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

.exercise-log-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.exercise-log-card h3 .remove-exercise-btn {
    background: none;
    border: none;
    color: var(--accent-danger);
    font-size: 0.85rem;
    cursor: pointer;
}

.log-sets-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.log-set-row {
    display: grid;
    grid-template-columns: 36px 1fr 1fr 50px;
    gap: 8px;
    align-items: center;
}

.log-set-row .set-number {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
}

.log-set-row input {
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
    width: 100%;
}

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

.log-set-row .complete-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.log-set-row .complete-btn.completed {
    background: var(--accent-success);
    border-color: var(--accent-success);
    color: white;
}

.log-set-row.target-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 4px 0;
    grid-template-columns: 36px 1fr 1fr 50px;
}

.add-set-btn {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    margin-top: 8px;
}

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

/* Progress View */
.chart-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    height: 250px;
}

#progress-chart {
    width: 100%;
    height: 100%;
}

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

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.stat-row .stat-label {
    color: var(--text-secondary);
}

.stat-row .stat-value {
    font-weight: 600;
    color: var(--accent-primary);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.tab {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-bottom: env(safe-area-inset-bottom);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.65rem;
    padding: 8px 6px;
    cursor: pointer;
    transition: color 0.2s;
    min-width: 0;
}

.nav-item.active {
    color: var(--accent-primary);
}

.nav-icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* Toast */
.toast {
    position: fixed;
    bottom: calc(var(--nav-height) + 20px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: opacity 0.3s, transform 0.3s;
    border: 1px solid var(--border-color);
}

.toast.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
    pointer-events: none;
}

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

.toast.error {
    border-color: var(--accent-danger);
}

/* Duration Inputs */
.duration-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.duration-inputs input {
    width: 70px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
}

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

.duration-inputs span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Settings */
.settings-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.settings-section h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.settings-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.settings-value {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.settings-note {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 2px;
}

/* Safe area support for notched phones */
@supports (padding: max(0px)) {
    .bottom-nav {
        padding-bottom: max(8px, env(safe-area-inset-bottom));
    }

    main {
        padding-bottom: calc(var(--nav-height) + max(16px, env(safe-area-inset-bottom)));
    }
}

/* History View */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.history-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    cursor: pointer;
    user-select: none;
}

.history-card-header:active {
    background: var(--bg-tertiary);
}

.history-card-info {
    flex: 1;
    min-width: 0;
}

.history-card-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.history-card-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    margin-left: 12px;
}

.history-chevron {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1;
}

.history-card-detail {
    border-top: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.history-card-detail.hidden {
    display: none;
}

.history-exercise {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.history-exercise-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-secondary);
}

.history-set-row {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
    padding-left: 8px;
}

.history-set-num {
    color: var(--text-muted);
    min-width: 42px;
}

.history-set-detail {
    color: var(--text-secondary);
}

/* Rest Timer Banner */
.rest-timer-banner {
    position: fixed;
    bottom: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 2px solid var(--accent-primary);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 150;
}

.rest-timer-banner.hidden {
    display: none;
}

.rest-timer-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.rest-timer-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.rest-timer-display {
    font-family: 'SF Mono', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-success);
    min-width: 48px;
}

.rest-timer-progress {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.rest-timer-bar {
    height: 100%;
    background: var(--accent-primary);
    border-radius: 2px;
    width: 100%;
    transition: width 1s linear;
}

.rest-timer-skip-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s;
}

.rest-timer-skip-btn:active {
    background: var(--bg-card);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    transition: .3s;
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-muted);
    transition: .3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

input:checked + .toggle-slider:before {
    transform: translateX(22px);
    background-color: white;
}

/* Settings duration control */
.settings-duration-control {
    display: flex;
    align-items: center;
    gap: 6px;
}

.settings-duration-control input {
    width: 64px;
    padding: 6px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    text-align: center;
    outline: none;
}

.settings-duration-control input:focus {
    border-color: var(--accent-primary);
}

.settings-duration-control span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* PR Cards — expanded 3-type layout */
.pr-card-expanded {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 14px 16px;
}

.pr-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 10px;
}

.pr-type-row {
    display: grid;
    grid-template-columns: 72px 1fr auto;
    align-items: center;
    width: 100%;
    gap: 8px;
    padding: 5px 0;
    border-top: 1px solid var(--border-color);
}

.pr-type-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.pr-type-row .pr-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-success);
}

.pr-type-row .pr-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pr-type-row.empty .pr-value {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 0.85rem;
}

/* Import modal z-index */
.import-modal {
    z-index: 400;
}

/* Import preview content */
.import-summary {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.import-summary p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 6px;
}

.import-summary p:last-child {
    margin-bottom: 0;
}

.import-summary strong {
    color: var(--text-primary);
}

.import-new-exercises {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.import-new-exercises h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.import-new-exercises ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.import-new-exercises li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 2px 0;
}

.import-warning {
    background: rgba(253, 203, 110, 0.08);
    border: 1px solid var(--accent-warning);
    border-radius: var(--radius-sm);
    padding: 12px;
    font-size: 0.85rem;
    color: var(--accent-warning);
}