/* ===== Buttons ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.96);
}

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

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

.btn-secondary {
    background: var(--color-surface-raised);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    padding: var(--space-sm);
}

.btn-ghost:hover {
    background: var(--color-surface-raised);
    color: var(--color-text);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

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

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Icon button (for arrows, trash, etc) */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn-icon:hover {
    background: var(--color-surface-raised);
    color: var(--color-text);
}

.btn-icon:active {
    transform: scale(0.9);
}

.btn-icon.danger:hover {
    background: rgba(231, 76, 60, 0.15);
    color: var(--color-danger);
}

/* FAB */
.fab {
    position: fixed;
    bottom: calc(var(--nav-height) + var(--space-lg) + env(safe-area-inset-bottom));
    right: var(--space-lg);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    border: none;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    z-index: 10;
    -webkit-tap-highlight-color: transparent;
}

.fab:hover {
    background: var(--color-primary-hover);
    transform: scale(1.05);
}

.fab:active {
    transform: scale(0.95);
}

/* ===== Cards ===== */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

/* ===== Form Elements ===== */

.form-group {
    margin-bottom: var(--space-lg);
}

.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);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

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

.form-input::placeholder, .form-textarea::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-top: var(--space-xs);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-danger);
    margin-top: var(--space-xs);
}

/* Input with button */
.input-group {
    display: flex;
    gap: var(--space-sm);
}

.input-group .form-input {
    flex: 1;
}

/* Toggle/Checkbox */
.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
}

.toggle-label {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
}

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

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

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

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

/* ===== Modal ===== */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: var(--space-lg);
    animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 360px;
    width: 100%;
    animation: modalSlideUp var(--transition-normal);
}

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

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.modal-message {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ===== List Card (Home Grid) ===== */

.list-card {
    position: relative;
    aspect-ratio: 2 / 3;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-surface-raised);
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.list-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.list-card:active {
    transform: scale(0.97);
}

.list-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(10, 10, 20, 0.95) 0%,
        rgba(10, 10, 20, 0.6) 40%,
        rgba(10, 10, 20, 0.1) 100%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md);
}

.list-card-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

/* No-cover placeholder */
.list-card.no-cover {
    background: linear-gradient(135deg, var(--color-surface-raised) 0%, var(--color-surface) 100%);
    border: 1px solid var(--color-border);
}

/* ===== Progress Bar ===== */

.progress-bar {
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.progress-bar-fill.complete {
    background: var(--color-success);
}

/* ===== List Item - Comic ===== */

.list-item-comic {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    transition: opacity var(--transition-fast), background var(--transition-fast);
    border-bottom: 1px solid var(--color-border);
}

.list-item-comic:last-child {
    border-bottom: none;
}

.list-item-comic.is-read {
    opacity: 0.5;
}

.list-item-comic.is-read .item-title,
.list-item-comic.is-read .item-issues,
.list-item-comic.is-read .item-notes {
    color: var(--color-text-read);
}

/* Read checkbox */
.read-checkbox {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    margin-top: 2px;
    -webkit-appearance: none;
    appearance: none;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.read-checkbox:checked {
    background: var(--color-success);
    border-color: var(--color-success);
}

.read-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 6px;
    height: 11px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Comic thumbnail */
.item-thumbnail {
    flex-shrink: 0;
    width: 40px;
    height: 60px;
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.item-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Comic info */
.item-info {
    flex: 1;
    min-width: 0;
}

.item-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    line-height: 1.3;
}

.item-issues {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.item-year {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.item-notes {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
    line-height: 1.4;
}

/* Essential badge */
.badge-essential {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: var(--font-size-xs);
    color: var(--color-essential);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Marvel link button */
.btn-marvel {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    background: var(--color-primary-bg);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    margin-top: var(--space-xs);
    transition: background var(--transition-fast);
}

.btn-marvel:hover {
    background: rgba(237, 29, 36, 0.2);
}

/* Item actions (arrows + trash) */
.item-actions {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    align-items: center;
}

/* ===== List Item - Header ===== */

.list-item-header {
    padding: var(--space-xl) 0 var(--space-sm) 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--space-sm);
}

.list-item-header:first-child {
    padding-top: var(--space-sm);
}

.list-item-header .header-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

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

.list-item-header .header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

/* ===== List Item - Note ===== */

.list-item-note {
    padding: var(--space-md);
    margin: var(--space-sm) 0;
    border-left: 3px solid var(--color-primary);
    background: var(--color-primary-bg);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.list-item-note .note-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

.list-item-note .note-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    flex: 1;
}

/* ===== Type Selector (for item form) ===== */

.type-selector {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.type-btn {
    flex: 1;
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-secondary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-fast);
}

.type-btn.active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-bg);
}

/* ===== Toast ===== */

.toast {
    position: fixed;
    bottom: calc(var(--nav-height) + var(--space-xl) + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface-raised);
    color: var(--color-text);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    animation: toastIn var(--transition-normal);
    border: 1px solid var(--color-border);
}

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

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

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}