/**
 * CardBuilder.css - Material Design 3 Card/Segment Component
 * Universal container for grouping related content
 */

/* ========================================
   Base Card Styles
   ======================================== */

.card-builder {
    position: relative;
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--m3-surface, #ffffff);
    color: var(--m3-on-surface, #202124);
}

/* ========================================
   Variants
   ======================================== */

/* Elevated - with shadow */
.card-elevated {
    background: var(--m3-surface, #ffffff);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);
}

.card-elevated:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1), 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* Filled - solid background */
.card-filled {
    background: var(--m3-surface-container-highest, #e6e6e6);
    box-shadow: none;
}

/* Outlined - border only */
.card-outlined {
    background: var(--m3-surface, #ffffff);
    border: 1px solid var(--m3-outline-variant, #dadce0);
    box-shadow: none;
}

/* ========================================
   Padding Variants
   ======================================== */

.card-padding-none .card-content,
.card-padding-none .card-header,
.card-padding-none .card-footer {
    padding: 0;
}

.card-padding-compact .card-content { padding: 12px; }
.card-padding-compact .card-header { padding: 12px; }
.card-padding-compact .card-footer { padding: 8px 12px; }

.card-padding-normal .card-content { padding: 16px; }
.card-padding-normal .card-header { padding: 16px; }
.card-padding-normal .card-footer { padding: 12px 16px; }

.card-padding-relaxed .card-content { padding: 24px; }
.card-padding-relaxed .card-header { padding: 20px 24px; }
.card-padding-relaxed .card-footer { padding: 16px 24px; }

/* ========================================
   Header
   ======================================== */

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.card-avatar-text {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    text-transform: uppercase;
}

.card-header-text {
    flex: 1;
    min-width: 0;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--m3-on-surface, #202124);
}

.card-subtitle {
    font-size: 14px;
    color: var(--m3-on-surface-variant, #5f6368);
    line-height: 1.4;
    margin-top: 2px;
}

.card-header-actions {
    display: flex;
    gap: 4px;
}

.card-header-action {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--m3-on-surface-variant, #5f6368);
    transition: background 0.15s ease;
}

.card-header-action:hover {
    background: var(--m3-surface-container-high, rgba(0, 0, 0, 0.08));
}

.card-header-action svg {
    width: 20px;
    height: 20px;
}

/* Collapse Toggle */
.card-collapse-toggle {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--m3-on-surface-variant, #5f6368);
    transition: transform 0.2s ease, background 0.15s ease;
}

.card-collapse-toggle:hover {
    background: var(--m3-surface-container-high, rgba(0, 0, 0, 0.08));
}

.card-collapse-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.card-collapsed .card-collapse-toggle svg {
    transform: rotate(-90deg);
}

/* ========================================
   Media
   ======================================== */

.card-media {
    position: relative;
    overflow: hidden;
    background: var(--m3-surface-container, #f5f5f5);
}

.card-media img,
.card-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   Content
   ======================================== */

.card-content {
    flex: 1;
    font-size: 14px;
    line-height: 1.6;
    color: var(--m3-on-surface-variant, #5f6368);
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.2s ease;
}

.card-content-collapsed {
    max-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    opacity: 0;
}

/* ========================================
   Footer
   ======================================== */

.card-footer {
    display: flex;
    gap: 8px;
    border-top: 1px solid var(--m3-outline-variant, #e0e0e0);
}

.card-footer-start { justify-content: flex-start; }
.card-footer-center { justify-content: center; }
.card-footer-end { justify-content: flex-end; }
.card-footer-between { justify-content: space-between; }

.card-footer-action {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s ease;
}

.card-footer-action svg {
    width: 18px;
    height: 18px;
}

/* Text action */
.card-action-text {
    background: transparent;
    color: var(--m3-primary, #1a73e8);
}

.card-action-text:hover {
    background: rgba(26, 115, 232, 0.08);
}

/* Filled action */
.card-action-filled {
    background: var(--m3-primary, #1a73e8);
    color: var(--m3-on-primary, #ffffff);
}

.card-action-filled:hover {
    background: var(--m3-primary-hover, #1557b0);
}

/* Outlined action */
.card-action-outlined {
    background: transparent;
    border: 1px solid var(--m3-outline, #dadce0);
    color: var(--m3-primary, #1a73e8);
}

.card-action-outlined:hover {
    background: rgba(26, 115, 232, 0.08);
}

/* ========================================
   States
   ======================================== */

/* Clickable */
.card-clickable {
    cursor: pointer;
}

.card-clickable:hover {
    transform: translateY(-2px);
}

.card-clickable:active {
    transform: translateY(0);
}

.card-clickable:focus-visible {
    outline: 2px solid var(--m3-primary, #1a73e8);
    outline-offset: 2px;
}

/* Disabled */
.card-disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* Loading */
.card-loading {
    pointer-events: none;
}

.card-loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.card-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--m3-outline-variant, #e0e0e0);
    border-top-color: var(--m3-primary, #1a73e8);
    border-radius: 50%;
    animation: card-spin 0.8s linear infinite;
}

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

/* ========================================
   Card Groups
   ======================================== */

.card-group {
    display: flex;
}

.card-group-vertical {
    flex-direction: column;
}

.card-group-horizontal {
    flex-direction: row;
    flex-wrap: wrap;
}

.card-group-horizontal > .card-builder {
    flex: 1;
    min-width: 280px;
}

/* Stacked cards (connected) */
.card-group-stacked > .card-builder {
    border-radius: 0;
}

.card-group-stacked > .card-builder:first-child {
    border-radius: 12px 12px 0 0;
}

.card-group-stacked > .card-builder:last-child {
    border-radius: 0 0 12px 12px;
}

.card-group-stacked > .card-outlined + .card-outlined {
    border-top: none;
}

/* ========================================
   Dark Mode
   ======================================== */

/* Base card in dark mode */
html.dark-mode .card-builder,
html.m3-dark .card-builder {
    background: #1e1e1e !important;
    color: #e1e1e1 !important;
}

/* Elevated variant */
html.dark-mode .card-elevated,
html.m3-dark .card-elevated {
    background: #1e1e1e !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2) !important;
}

html.dark-mode .card-elevated:hover,
html.m3-dark .card-elevated:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3) !important;
}

/* Filled variant */
html.dark-mode .card-filled,
html.m3-dark .card-filled {
    background: #2d2d2d !important;
}

/* Outlined variant */
html.dark-mode .card-outlined,
html.m3-dark .card-outlined {
    background: #1e1e1e !important;
    border-color: #3d3d3d !important;
}

/* Title */
html.dark-mode .card-title,
html.m3-dark .card-title {
    color: #e1e1e1 !important;
}

/* Subtitle and content */
html.dark-mode .card-subtitle,
html.m3-dark .card-subtitle,
html.dark-mode .card-content,
html.m3-dark .card-content {
    color: #a1a1a1 !important;
}

/* Header action buttons */
html.dark-mode .card-header-action,
html.m3-dark .card-header-action,
html.dark-mode .card-collapse-toggle,
html.m3-dark .card-collapse-toggle {
    color: #a1a1a1 !important;
}

html.dark-mode .card-header-action:hover,
html.m3-dark .card-header-action:hover,
html.dark-mode .card-collapse-toggle:hover,
html.m3-dark .card-collapse-toggle:hover {
    background: rgba(255, 255, 255, 0.1) !important;
    color: #e1e1e1 !important;
}

/* Footer */
html.dark-mode .card-footer,
html.m3-dark .card-footer {
    border-top-color: #3d3d3d !important;
}

/* Footer action buttons */
html.dark-mode .card-action-text,
html.m3-dark .card-action-text {
    color: #8ab4f8 !important;
}

html.dark-mode .card-action-text:hover,
html.m3-dark .card-action-text:hover {
    background: rgba(138, 180, 248, 0.12) !important;
}

html.dark-mode .card-action-filled,
html.m3-dark .card-action-filled {
    background: #8ab4f8 !important;
    color: #003c8f !important;
}

html.dark-mode .card-action-filled:hover,
html.m3-dark .card-action-filled:hover {
    background: #aecbfa !important;
}

html.dark-mode .card-action-outlined,
html.m3-dark .card-action-outlined {
    border-color: #8ab4f8 !important;
    color: #8ab4f8 !important;
}

html.dark-mode .card-action-outlined:hover,
html.m3-dark .card-action-outlined:hover {
    background: rgba(138, 180, 248, 0.12) !important;
}

/* Loading overlay */
html.dark-mode .card-loading-overlay,
html.m3-dark .card-loading-overlay {
    background: rgba(30, 30, 30, 0.8) !important;
}

/* Spinner */
html.dark-mode .card-spinner,
html.m3-dark .card-spinner {
    border-color: #3d3d3d !important;
    border-top-color: #8ab4f8 !important;
}

/* Media placeholder */
html.dark-mode .card-media,
html.m3-dark .card-media {
    background: #2d2d2d !important;
}

/* Clickable focus */
html.dark-mode .card-clickable:focus-visible,
html.m3-dark .card-clickable:focus-visible {
    outline-color: #8ab4f8 !important;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 480px) {
    .card-padding-normal .card-content { padding: 12px; }
    .card-padding-normal .card-header { padding: 12px; }
    .card-padding-normal .card-footer { padding: 10px 12px; }

    .card-padding-relaxed .card-content { padding: 16px; }
    .card-padding-relaxed .card-header { padding: 16px; }
    .card-padding-relaxed .card-footer { padding: 12px 16px; }

    .card-group-horizontal > .card-builder {
        min-width: 100%;
    }
}