/* ========================================
   Component Styles
   ======================================== */

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1.5;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(255, 107, 44, 0.16) 0%, rgba(255, 107, 44, 0.05) 50%, rgba(255, 107, 44, 0.14) 100%);
    color: rgba(255, 255, 255, 0.9);
    border: 1.5px solid rgba(255, 107, 44, 0.20);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 0 20px rgba(255, 107, 44, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(255, 107, 44, 0.18) 0%, rgba(255, 107, 44, 0.05) 50%, rgba(255, 107, 44, 0.15) 100%);
    border-color: rgba(255, 107, 44, 0.25);
    box-shadow: 0 0 28px rgba(255, 107, 44, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--glass-border-light);
}

.btn-success {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.4) 0%, rgba(52, 211, 153, 0.1) 50%, rgba(52, 211, 153, 0.35) 100%);
    color: white;
    border: 1.5px solid rgba(52, 211, 153, 0.5);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 0 20px rgba(52, 211, 153, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-success:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.5) 0%, rgba(52, 211, 153, 0.15) 50%, rgba(52, 211, 153, 0.45) 100%);
    border-color: rgba(52, 211, 153, 0.65);
    box-shadow: 0 0 28px rgba(52, 211, 153, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.4) 0%, rgba(248, 113, 113, 0.1) 50%, rgba(248, 113, 113, 0.35) 100%);
    color: white;
    border: 1.5px solid rgba(248, 113, 113, 0.5);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 0 20px rgba(248, 113, 113, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.5) 0%, rgba(248, 113, 113, 0.15) 50%, rgba(248, 113, 113, 0.45) 100%);
    border-color: rgba(248, 113, 113, 0.65);
    box-shadow: 0 0 28px rgba(248, 113, 113, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-color: var(--glass-border);
    color: var(--color-text-primary);
}

.btn-lg {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
}

/* ----------------------------------------
   Cards
   ---------------------------------------- */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1.5px solid var(--glass-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

/* ----------------------------------------
   Forms
   ---------------------------------------- */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .form-textarea {
    background: rgba(255, 255, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.6);
}

/* Override Chrome autofill blue tint */
.form-input:-webkit-autofill,
.form-group input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px var(--glass-bg) inset;
    -webkit-text-fill-color: var(--color-text-primary);
    transition: background-color 5000s ease-in-out 0s;
}

[data-theme="light"] .form-input:-webkit-autofill,
[data-theme="light"] .form-group input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px rgba(255, 255, 255, 0.8) inset;
    -webkit-text-fill-color: var(--color-text-primary);
}

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

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

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    margin-top: calc(-1 * var(--space-xs));
}

.substitute-selects {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a0a0a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-sm) center;
    background-size: 20px;
    padding-right: var(--space-xl);
}

.form-select option {
    background: #1a1a1a;
    color: #e0e0e0;
}

[data-theme="light"] .form-select option {
    background: #ffffff;
    color: #1a1a1a;
}

.form-input-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
}

.form-inline {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.form-inline .form-input {
    width: auto;
}

/* Number Input with Units */
.input-with-unit {
    display: flex;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.input-with-unit:focus-within {
    border-color: var(--color-primary);
}

.input-with-unit input {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--space-sm);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    text-align: center;
    min-width: 60px;
}

.input-with-unit input:focus {
    outline: none;
}

.input-with-unit .unit {
    padding: var(--space-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    background: var(--color-bg-tertiary);
}

/* Checkbox / Toggle */
.toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 28px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    transition: var(--transition-base);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.toggle input:checked + .toggle-slider {
    background: linear-gradient(135deg, rgba(255, 107, 44, 0.12) 0%, rgba(255, 107, 44, 0.04) 50%, rgba(255, 107, 44, 0.10) 100%);
    border-color: rgba(255, 107, 44, 0.15);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* Light mode toggle */
[data-theme="light"] .toggle-slider {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .toggle-slider::before {
    background: white;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .toggle input:checked + .toggle-slider {
    background: linear-gradient(135deg, rgba(229, 90, 27, 0.15) 0%, rgba(229, 90, 27, 0.05) 50%, rgba(229, 90, 27, 0.12) 100%);
    border-color: rgba(229, 90, 27, 0.12);
}

/* Light mode: glass buttons with stronger contrast */
[data-theme="light"] .btn-primary {
    background: linear-gradient(135deg, rgba(229, 90, 27, 0.15) 0%, rgba(229, 90, 27, 0.05) 50%, rgba(229, 90, 27, 0.12) 100%);
    border: 1.5px solid rgba(229, 90, 27, 0.12);
    color: #1a1f36;
    box-shadow: 0 0 20px rgba(229, 90, 27, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(229, 90, 27, 0.22) 0%, rgba(229, 90, 27, 0.08) 50%, rgba(229, 90, 27, 0.18) 100%);
    border-color: rgba(229, 90, 27, 0.2);
}

[data-theme="light"] .btn-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.5) 0%, rgba(16, 185, 129, 0.15) 50%, rgba(16, 185, 129, 0.45) 100%);
    border: 1.5px solid rgba(16, 185, 129, 0.4);
    color: #1a1f36;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .btn-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.45) 0%, rgba(239, 68, 68, 0.12) 50%, rgba(239, 68, 68, 0.4) 100%);
    border: 1.5px solid rgba(239, 68, 68, 0.35);
    color: #1a1f36;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .btn-secondary {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(255, 255, 255, 0.9);
}

/* ----------------------------------------
   Modal
   ---------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease-out, visibility 0.35s ease-out;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(20px);
    opacity: 0;
    transition: transform 0.4s ease-out, opacity 0.4s ease-out;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

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

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-body {
    flex: 1;
    padding: var(--space-md);
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    padding: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

.modal-footer:empty {
    display: none;
}

/* ----------------------------------------
   Toast Notifications
   ---------------------------------------- */
.toast-container {
    position: fixed;
    bottom: calc(var(--nav-height) + var(--space-md));
    left: var(--space-md);
    right: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: var(--z-toast);
    pointer-events: none;
}

.toast {
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: toastIn 0.4s ease;
    pointer-events: auto;
}

.toast.toast-success {
    border-left: 4px solid var(--color-success);
}

.toast.toast-error {
    border-left: 4px solid var(--color-danger);
}

.toast.toast-warning {
    border-left: 4px solid var(--color-warning);
}

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

/* ----------------------------------------
   Rest Timer
   ---------------------------------------- */
.rest-timer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-timer);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease-out, visibility 0.35s ease-out;
}

.rest-timer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.rest-timer {
    text-align: center;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    transition: transform 0.4s ease-out, opacity 0.4s ease-out;
}

.rest-timer-overlay.active .rest-timer {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.rest-timer-time {
    font-size: 5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
}

.rest-timer-label {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.rest-timer-next {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    opacity: 0.9;
}

.rest-timer-next:empty {
    display: none;
}

.rest-timer-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

/* ----------------------------------------
   Progress Bar
   ---------------------------------------- */
.progress-bar {
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-success));
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

/* ----------------------------------------
   List Items
   ---------------------------------------- */
/* List */
.list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.list-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

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

.list-item.active {
    border-color: var(--color-primary);
    background: rgba(255, 107, 44, 0.06);
}

.list-item-content {
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-item-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

.list-item-arrow {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
}

.in-program-badge {
    font-size: var(--font-size-xs);
}

/* ----------------------------------------
   Chips / Tags
   ---------------------------------------- */
.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-family: var(--font-family-display);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.chip.active {
    background: rgba(255, 107, 44, 0.10);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* ----------------------------------------
   Search Bar
   ---------------------------------------- */
.search-bar {
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-left: var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.search-bar input:focus {
    border-color: var(--color-primary);
}

.search-bar-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

/* ----------------------------------------
   Empty State
   ---------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
    color: var(--color-text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.empty-state-text {
    margin-bottom: var(--space-lg);
}

/* ----------------------------------------
   Divider
   ---------------------------------------- */
.divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-md) 0;
}

/* ----------------------------------------
   Badge
   ---------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--space-xs);
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
}

.badge-success {
    background: var(--color-success);
}

.badge-warning {
    background: var(--color-warning);
}

.badge-danger {
    background: var(--color-danger);
}

/* ----------------------------------------
   Reset Options
   ---------------------------------------- */
.reset-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.reset-option {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.reset-option:hover {
    background: var(--color-bg-tertiary);
}

.reset-option input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-primary);
}

.reset-option-title {
    font-weight: var(--font-weight-medium);
}

.reset-option-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* ----------------------------------------
   Exercise Picker
   ---------------------------------------- */
.exercise-picker {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.exercise-picker-filters {
    position: sticky;
    top: 0;
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding-bottom: var(--space-sm);
    z-index: 1;
}

.exercise-picker-list {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.exercise-picker-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.exercise-picker-item:hover {
    background: var(--glass-bg-heavy);
}

.exercise-picker-item.selected {
    border-color: var(--color-primary);
    background: rgba(255, 107, 44, 0.06);
}

.exercise-picker-checkbox {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.exercise-picker-item.selected .exercise-picker-checkbox {
    background: rgba(255, 107, 44, 0.10);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.exercise-picker-info {
    flex: 1;
    min-width: 0;
}

.exercise-picker-name {
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.exercise-picker-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.exercise-picker-selected {
    padding: var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

/* ----------------------------------------
   Substitution Modal
   ---------------------------------------- */
.sub-current {
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.sub-current-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-xs);
}

.sub-current-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.sub-current-original {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-style: italic;
    margin-top: var(--space-xs);
}

.sub-section {
    margin-bottom: var(--space-md);
}

.sub-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.sub-option {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.sub-option-name {
    font-weight: var(--font-weight-medium);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sub-option-detail {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.sub-option-original {
    border-color: var(--color-success);
    background: rgba(76, 175, 80, 0.1);
}

.sub-option-original:hover {
    border-color: var(--color-success);
    background: rgba(76, 175, 80, 0.2);
}

.original-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    background: var(--color-success);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.sub-option-recommended {
    border-color: var(--color-primary);
    background: rgba(255, 107, 44, 0.06);
}

.sub-option-recommended:hover {
    border-color: var(--color-primary);
    background: rgba(255, 107, 44, 0.12);
}

.substitute-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    background: var(--color-primary);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-left: var(--space-xs);
}