/* explica — Dashboard styles */

:root {
    --lts-accent: #FD9840;
    --lts-dark: #0C1821;
    --lts-light: #FDFDFD;
    --lts-text: #1A1A1A;
    --lts-text-secondary: #4A4A4A;
    --lts-border: #E5E5E5;
    --lts-bg: #F7F7F7;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Tenor Sans', sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background: var(--lts-bg);
    color: var(--lts-text);
    min-height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: var(--lts-light);
    border-bottom: 1px solid var(--lts-border);
}

.app-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--lts-dark);
    text-decoration: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-selector {
    display: flex;
    gap: 0.25rem;
}

.lang-option {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-family: var(--font-body);
    text-decoration: none;
    color: var(--lts-text-secondary);
    border-radius: 3px;
    transition: all 0.2s;
}

.lang-option.active {
    color: var(--lts-dark);
    background: var(--lts-border);
    font-weight: 600;
}

.lang-option:hover {
    color: var(--lts-dark);
}

.header-link {
    font-size: 0.875rem;
    color: var(--lts-text-secondary);
    text-decoration: none;
}

.header-link:hover {
    color: var(--lts-dark);
}

/* Breadcrumb */
.breadcrumb {
    font-family: var(--font-body);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb a {
    color: var(--lts-text-secondary);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--lts-dark);
}

.breadcrumb .separator {
    color: var(--lts-border);
}

/* ============================================
   Tab bar
   ============================================ */
.tab-bar {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem 0;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--lts-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--lts-text-secondary);
    cursor: pointer;
    border-radius: 6px 6px 0 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
    position: relative;
}

.tab:hover {
    color: var(--lts-dark);
    background: rgba(0, 0, 0, 0.03);
}

.tab.active {
    color: var(--lts-dark);
    border-bottom-color: var(--lts-accent);
    font-weight: 600;
}

.tab-count {
    font-size: 0.7rem;
    color: var(--lts-text-secondary);
    margin-left: 0.25rem;
    opacity: 0.7;
}

.tab.active .tab-count {
    color: var(--lts-accent);
    opacity: 1;
}

.tab-add {
    font-size: 1.125rem;
    color: var(--lts-text-secondary);
    padding: 0.5rem 0.75rem;
}

.tab-add:hover {
    color: var(--lts-accent);
}

/* Drag over tab highlight */
.tab.drag-over {
    background: rgba(253, 152, 64, 0.15);
    border-bottom-color: var(--lts-accent);
    color: var(--lts-accent);
}

/* Dashboard */
.dashboard {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* ============================================
   Categories grid (kept for reference / fallback)
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.category-card {
    position: relative;
    background: var(--lts-light);
    border: 1px solid var(--lts-border);
    border-radius: 8px;
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: var(--lts-text);
    transition: box-shadow 0.3s, transform 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
}

.category-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.category-icon {
    width: 48px;
    height: 48px;
    color: var(--lts-accent);
}

.category-icon svg {
    width: 100%;
    height: 100%;
}

.category-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
}

.category-desc {
    font-size: 0.875rem;
    color: var(--lts-text-secondary);
    line-height: 1.4;
}

.category-count {
    font-size: 0.75rem;
    color: var(--lts-text-secondary);
    margin-top: auto;
}

.edit-category-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--lts-text-secondary);
    opacity: 0;
    transition: opacity 0.2s;
    padding: 0.25rem;
}

.category-card:hover .edit-category-btn {
    opacity: 1;
}

.edit-category-btn:hover {
    color: var(--lts-accent);
}

/* Add category card */
.add-category {
    border-style: dashed;
    color: var(--lts-text-secondary);
    cursor: pointer;
    justify-content: center;
}

.add-category:hover {
    border-color: var(--lts-accent);
    color: var(--lts-accent);
}

.add-icon {
    font-size: 2rem;
    font-weight: 300;
    line-height: 1;
}

/* ============================================
   Presentations list
   ============================================ */
.presentations-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.presentation-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--lts-light);
    border: 1px solid var(--lts-border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    transition: box-shadow 0.2s, opacity 0.2s;
    cursor: grab;
}

.presentation-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.presentation-card.dragging {
    opacity: 0.4;
}

.pres-info {
    flex: 1;
}

.pres-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.pres-subtitle {
    font-size: 0.875rem;
    color: var(--lts-text-secondary);
    margin-bottom: 0.5rem;
}

.pres-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--lts-text-secondary);
}

.cat-badge {
    padding: 0.125rem 0.5rem;
    background: rgba(253, 152, 64, 0.1);
    color: var(--lts-accent);
    border-radius: 3px;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.lang-badge {
    padding: 0.125rem 0.375rem;
    border: 1px solid var(--lts-border);
    border-radius: 3px;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.brand-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.brand-indicator.brand-on {
    background: var(--lts-accent);
}

.brand-indicator.brand-off {
    background: #CCC;
}

/* Meta badges for slide info */
.meta-badge {
    padding: 0.1rem 0.375rem;
    border-radius: 3px;
    font-size: 0.6rem;
    font-weight: 600;
    font-family: monospace;
    letter-spacing: 0.03em;
}

.meta-slides {
    background: #F0F0F0;
    color: var(--lts-text-secondary);
}

.meta-mermaid {
    background: transparent;
    color: var(--lts-accent);
    border: 1px solid var(--lts-accent);
}

.meta-bg {
    background: transparent;
    color: var(--lts-accent);
    border: 1px solid var(--lts-accent);
}

.pres-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
    margin-left: 1rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--lts-border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    background: var(--lts-light);
    color: var(--lts-text);
}

.btn-primary {
    background: var(--lts-dark);
    color: var(--lts-light);
    border-color: var(--lts-dark);
}

.btn-primary:hover {
    background: #1a2a35;
}

.btn-secondary:hover {
    border-color: var(--lts-accent);
    color: var(--lts-accent);
}

.btn-danger {
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    cursor: pointer;
    border: 1px solid #DC2626;
    background: #FEE2E2;
    color: #DC2626;
}

.btn-danger:hover {
    background: #DC2626;
    color: #FFFFFF;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--lts-text-secondary);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}

.modal-content {
    position: relative;
    background: var(--lts-light);
    border-radius: 12px;
    padding: 2rem;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.modal-content h3 {
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    color: var(--lts-text-secondary);
    margin-bottom: 0.375rem;
}

.form-group input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--lts-border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.875rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--lts-accent);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.form-actions button {
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    cursor: pointer;
    border: 1px solid var(--lts-border);
    background: var(--lts-light);
}

.form-actions .btn-primary {
    background: var(--lts-dark);
    color: var(--lts-light);
    border-color: var(--lts-dark);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--lts-dark);
    color: var(--lts-light);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.875rem;
    z-index: 2000;
    animation: toastIn 0.3s ease;
}

.toast[hidden] {
    display: none;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Login */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--lts-bg);
}

.login-card {
    text-align: center;
    background: var(--lts-light);
    padding: 3rem 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.login-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--lts-dark);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-size: 0.875rem;
    color: var(--lts-text-secondary);
    margin-bottom: 2rem;
}

.login-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--lts-border);
    border-radius: 8px;
    background: var(--lts-light);
    color: var(--lts-text);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    transition: box-shadow 0.2s;
}

.login-button:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* ============================================
   Design System page
   ============================================ */
.ds-page {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: flex;
    gap: 2rem;
}

.ds-sidebar {
    position: sticky;
    top: 1rem;
    width: 180px;
    flex-shrink: 0;
    align-self: flex-start;
}

.ds-sidebar a {
    display: block;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    color: var(--lts-text-secondary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.15s;
}

.ds-sidebar a:hover {
    color: var(--lts-dark);
    background: rgba(0, 0, 0, 0.04);
}

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

.ds-section {
    margin-bottom: 3rem;
    scroll-margin-top: 1rem;
}

.ds-section h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--lts-border);
}

.ds-example {
    background: var(--lts-light);
    border: 1px solid var(--lts-border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.ds-example-dark {
    background: var(--lts-dark);
    color: var(--lts-light);
}

.ds-label {
    font-size: 0.75rem;
    color: var(--lts-text-secondary);
    font-family: monospace;
    margin-bottom: 0.5rem;
}

.ds-code {
    background: #F5F5F5;
    border: 1px solid var(--lts-border);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-family: monospace;
    font-size: 0.8rem;
    overflow-x: auto;
    margin-top: 0.5rem;
    white-space: pre;
}

.ds-color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

.ds-color-swatch {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--lts-border);
}

.ds-color-swatch .swatch {
    height: 60px;
}

.ds-color-swatch .swatch-info {
    padding: 0.5rem 0.75rem;
    background: var(--lts-light);
    font-size: 0.75rem;
}

.ds-color-swatch .swatch-info strong {
    display: block;
    margin-bottom: 0.125rem;
}

.ds-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .ds-page {
        flex-direction: column;
    }
    .ds-sidebar {
        position: static;
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 0.25rem;
    }
}

@media (max-width: 640px) {
    .app-header {
        padding: 1rem;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .dashboard {
        margin: 1.5rem auto;
        padding: 0 1rem;
    }

    .tab-bar {
        gap: 0;
    }

    .tab {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .presentation-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .pres-actions {
        margin-left: 0;
        width: 100%;
    }

    .pres-actions .btn {
        flex: 1;
        text-align: center;
    }
}

/* Tab edit icon */
.tab-edit {
    display: none;
    align-items: center;
    justify-content: center;
    margin-left: 0.25rem;
    padding: 0.125rem;
    border-radius: 3px;
    color: var(--lts-text-secondary);
    cursor: pointer;
    transition: color 0.15s;
    vertical-align: middle;
}

.tab:hover .tab-edit {
    display: inline-flex;
}

.tab-edit:hover {
    color: var(--lts-accent);
}