/* Forge — Component Library v3.0
   Solo Leveling System Window aesthetic.
   Cards, buttons, forms, tables, badges, toasts, skeleton loaders */

/* ============================================
   CARDS — System Window panels with glow
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--dur-normal) var(--ease-out);
    position: relative;
}
.card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--accent-glow),
        transparent
    );
    opacity: 0;
    transition: opacity var(--dur-normal) var(--ease-out);
}
.card:hover {
    border-color: var(--border-accent);
    box-shadow:
        var(--shadow-md),
        0 0 14px var(--accent-glow),
        inset 0 0 0 1px var(--accent-light);
}
.card:hover::after {
    opacity: 1;
}
.card-header {
    padding: var(--space-4) var(--space-5);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-body {
    padding: var(--space-5);
}

/* Stat card variant */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    transition: all var(--dur-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-slow) var(--ease-out);
}
.stat-card:hover::before {
    transform: scaleX(1);
}
.stat-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}
.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--space-1);
}
.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.stat-icon {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.stat-icon svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}
.stat-icon.success {
    background: var(--success-light);
}
.stat-icon.success svg {
    color: var(--success);
}
.stat-icon.warning {
    background: var(--warning-light);
}
.stat-icon.warning svg {
    color: var(--warning);
}

/* ============================================
   BUTTONS — with press feedback
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--dur-fast) var(--ease-out);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    overflow: hidden;
}
.btn:active:not(:disabled) {
    transform: scale(0.97);
}
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: white;
    border-color: var(--accent);
    text-shadow: 0 1px 2px var(--text-shadow-soft);
}
.btn-primary:hover:not(:disabled) {
    background: linear-gradient(
        135deg,
        var(--accent-hover),
        var(--accent-stronger)
    );
    box-shadow:
        0 0 20px var(--accent-glow),
        0 0 40px var(--accent-light);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}
.btn-outline:hover:not(:disabled) {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    box-shadow: 0 0 16px var(--danger-light);
}

.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover:not(:disabled) {
    box-shadow: 0 0 16px var(--success-light);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: 0.8rem;
}
.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: 1rem;
}
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* Button loading spinner */
.btn .spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid var(--ui-highlight-30);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ============================================
   FORMS — with focus glow
   ============================================ */
.form-group {
    margin-bottom: var(--space-4);
}
.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: all var(--dur-fast) var(--ease-out);
    min-height: 44px;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow:
        0 0 0 3px var(--accent-light),
        0 0 12px var(--accent-glow);
}
.form-input::placeholder {
    color: var(--text-muted);
}
.form-textarea {
    resize: vertical;
    min-height: 100px;
}
.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-1);
}
.form-error {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: var(--space-1);
}
.form-input.error {
    border-color: var(--danger);
}

/* ============================================
   TABLES — with row hover
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
table {
    width: 100%;
    border-collapse: collapse;
}
th,
td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-size: 0.875rem;
}
th {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border);
}
td {
    border-bottom: 1px solid var(--border-light);
}
tbody tr {
    transition: background var(--dur-fast) var(--ease-out);
}
tbody tr:hover {
    background: var(--bg-hover);
}
tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-3);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-added {
    background: var(--success-light);
    color: var(--success);
}
.badge-changed {
    background: var(--warning-light);
    color: var(--warning);
}
.badge-removed {
    background: var(--danger-light);
    color: var(--danger);
}
.badge-fixed {
    background: var(--accent-light);
    color: var(--accent);
}
.badge-server {
    background: var(--danger-light);
    color: var(--danger);
}
.badge-client {
    background: var(--warning-light);
    color: var(--warning);
}

/* PR badges */
.pr-badges {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.3rem;
}
.pr-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}
.pr-badge svg {
    width: 12px;
    height: 12px;
}
.pr-badge-e1rm {
    background: color-mix(in srgb, var(--heat-3) 15%, transparent);
    color: var(--heat-3);
    border: 1px solid color-mix(in srgb, var(--heat-3) 30%, transparent);
}
.pr-badge-volume {
    background: color-mix(in srgb, var(--heat-2) 15%, transparent);
    color: var(--heat-2);
    border: 1px solid color-mix(in srgb, var(--heat-2) 30%, transparent);
}
.pr-badge-best_set {
    background: color-mix(in srgb, var(--heat-5) 15%, transparent);
    color: var(--heat-5);
    border: 1px solid color-mix(in srgb, var(--heat-5) 30%, transparent);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: var(--space-5);
    right: var(--space-5);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    max-width: 420px;
    width: calc(100% - var(--space-6) * 2);
}
.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn var(--dur-slow) var(--ease-spring) both;
    overflow: hidden;
    position: relative;
}
.toast.removing {
    animation: toastOut var(--dur-normal) var(--ease-in) both;
}
.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}
.toast-body {
    flex: 1;
    min-width: 0;
}
.toast-title {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 2px;
}
.toast-message {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}
.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    flex-shrink: 0;
    transition: color var(--dur-fast) var(--ease-out);
}
.toast-close:hover {
    color: var(--text-primary);
}
.toast-close svg {
    width: 16px;
    height: 16px;
}
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    border-radius: 0 0 0 var(--radius-md);
    transition: width linear;
}
/* Toast variants */
.toast.success {
    border-left: 3px solid var(--success);
    animation: system-pulse 1.5s ease-out 1;
}
.toast.success .toast-icon {
    color: var(--success);
}
.toast.success .toast-progress {
    background: var(--success);
}

.toast.error {
    border-left: 3px solid var(--danger);
}
.toast.error .toast-icon {
    color: var(--danger);
}
.toast.error .toast-progress {
    background: var(--danger);
}

.toast.warning {
    border-left: 3px solid var(--warning);
}
.toast.warning .toast-icon {
    color: var(--warning);
}
.toast.warning .toast-progress {
    background: var(--warning);
}

.toast.info {
    border-left: 3px solid var(--accent);
}
.toast.info .toast-icon {
    color: var(--accent);
}
.toast.info .toast-progress {
    background: var(--accent);
}

/* ============================================
   SUMMARY BAR
   ============================================ */
.summary-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    justify-content: center;
    margin-top: var(--space-5);
}
.pagination .btn {
    min-width: 2.25rem;
}

/* ============================================
   EXPANDABLE ENTRIES
   ============================================ */
.expandable-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: background var(--dur-fast) var(--ease-out);
}
.expandable-header:hover {
    background: var(--bg-hover);
}
.expandable-header .chevron {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: transform var(--dur-normal) var(--ease-out);
}
.expandable-header.open .chevron {
    transform: rotate(180deg);
}
.expandable-body {
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: none;
    animation: fadeIn var(--dur-fast) var(--ease-out);
}
.expandable-body.open {
    display: block;
}
.expandable-body pre {
    background: var(--bg-primary);
    padding: var(--space-4);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    white-space: pre-wrap;
    word-break: break-word;
    border: 1px solid var(--border);
}

/* ============================================
   OVERFLOW PROTECTION
   ============================================ */
.card,
.engine-result,
.error-entry,
.exercise-card,
.expandable-body,
td,
.badge {
    overflow-wrap: break-word;
    word-break: break-word;
    min-width: 0;
}

/* ============================================
   LOADING / EMPTY / SKELETON STATES
   ============================================ */
.loading {
    text-align: center;
    padding: var(--space-7);
    color: var(--text-muted);
}
.loading .spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin-bottom: var(--space-3);
}

.empty-state {
    text-align: center;
    padding: var(--space-7) var(--space-4);
    color: var(--text-muted);
}
.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-3);
    opacity: 0.4;
}
.empty-state p {
    margin-top: var(--space-2);
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-hover) 25%,
        var(--bg-secondary) 50%,
        var(--bg-hover) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
.skeleton-text {
    height: 14px;
    margin-bottom: var(--space-2);
}
.skeleton-text:last-child {
    width: 60%;
}
.skeleton-card {
    height: 120px;
    border-radius: var(--radius-md);
}

/* ============================================
   ENGINE SHORTCUTS
   ============================================ */
.engine-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ============================================
   FILE TREE (token usage)
   ============================================ */
.file-tree {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}
.file-tree-folder {
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: background var(--dur-fast) var(--ease-out);
}
.file-tree-folder:hover {
    background: var(--bg-hover);
}
.file-tree-children {
    padding-left: var(--space-5);
}
.file-tree-file {
    display: flex;
    justify-content: space-between;
    padding: var(--space-1) var(--space-2);
    color: var(--text-secondary);
}
.file-tree-file .file-size {
    color: var(--text-muted);
}
.file-tree-file .token-count {
    color: var(--accent);
    font-weight: 500;
}

/* ============================================
   MISC UTILITIES
   ============================================ */
.divider {
    height: 1px;
    background: var(--border);
    margin: var(--space-5) 0;
}
.flex {
    display: flex;
}
.flex-col {
    flex-direction: column;
}
.items-center {
    align-items: center;
}
.justify-between {
    justify-content: space-between;
}
.gap-2 {
    gap: var(--space-2);
}
.gap-3 {
    gap: var(--space-3);
}
.gap-4 {
    gap: var(--space-4);
}
.mt-4 {
    margin-top: var(--space-4);
}
.mt-2 {
    margin-top: var(--space-2);
}
.mt-5 {
    margin-top: var(--space-5);
}
.mb-4 {
    margin-bottom: var(--space-4);
}
.mb-3 {
    margin-bottom: var(--space-3);
}
.mb-2 {
    margin-bottom: var(--space-2);
}
.mb-5 {
    margin-bottom: var(--space-5);
}
.mt-6 {
    margin-top: var(--space-6);
}
.pt-2 {
    padding-top: var(--space-2);
}
.m-0 {
    margin: 0;
}
.ml-2 {
    margin-left: var(--space-2);
}
.mt-1 {
    margin-top: var(--space-1);
}
.mt-1h {
    margin-top: 0.4rem;
}
.text-2xs {
    font-size: 0.72rem;
}
.w-full {
    width: 100%;
}
.inline-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}
.inline-icon-tight {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.inline-icon-micro {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.row-wrap-end {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    align-items: flex-end;
}
.row-wrap-center {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    align-items: center;
}
.row-between-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}
.stack-tight {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.text-xs {
    font-size: 0.8rem;
}
.text-sm {
    font-size: 0.85rem;
}
.text-caption {
    font-size: 0.82rem;
}
.form-group-inline-grow {
    margin: 0;
    min-width: 260px;
    flex: 1;
}
.input-max-300 {
    max-width: 300px;
}
.input-max-220 {
    max-width: 220px;
}
.input-min-120 {
    min-width: 120px;
}
.input-w-80 {
    width: 80px;
}
.input-w-60 {
    width: 60px;
}
.select-compact {
    width: 90px;
    font-size: 0.8rem;
    padding: 0.2rem;
}
.pagination-strip {
    margin-top: var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* Page-level tab switcher (Workouts|Exercises, Player|Profile) */
.page-tabs {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    margin-bottom: var(--space-5);
    padding: var(--space-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}
.page-tab-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    padding: var(--space-2) var(--space-4);
    border-radius: calc(var(--radius-md) - 2px);
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    transition: all var(--dur-fast) var(--ease-out);
}
.page-tab-link:hover {
    color: var(--text-primary);
    border-color: var(--border-accent);
    background: var(--bg-hover);
}
.page-tab-link.active {
    color: var(--text-primary);
    border-color: var(--border-accent);
    background: var(--accent-light);
    box-shadow: 0 0 0 1px var(--border-accent) inset;
}

/* Dashboard: Workout rows */
.workout-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--dur-fast) var(--ease-out);
}
.workout-row:last-child {
    border-bottom: none;
}
.workout-row:hover {
    color: var(--accent);
    padding-left: var(--space-2);
}

/* Summary bar: 2 cols on tablet, 1 col on mobile */
@media (max-width: 1023px) {
    .summary-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 480px) {
    .summary-bar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .toast-container {
        top: auto;
        bottom: calc(var(--space-8) + var(--space-5));
        right: var(--space-3);
        left: var(--space-3);
        max-width: 100%;
        width: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn:active:not(:disabled),
    .stat-card:hover,
    .workout-row:hover {
        transform: none;
    }

    .toast,
    .toast.removing,
    .loading .spinner,
    .btn .spinner,
    .skeleton {
        animation: none !important;
    }

    .toast-progress {
        transition: none;
    }
}