:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --dark: #0f172a;
    --slate: #1e293b;
    --border: #334155;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --danger: #ef4444;
    --page-gutter: 2rem;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

[hidden] { display: none !important; }

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

body {
    background-color: var(--dark);
    color: var(--text);
    min-height: 100vh;
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

body.has-compare-bar { padding-bottom: calc(9rem + env(safe-area-inset-bottom, 0px)); }
body.modal-open { overflow: hidden; }

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    background: #090d16;
    padding: 1rem var(--page-gutter);
    border-bottom: 1px solid var(--border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-badge {
    background: var(--primary);
    color: #000;
    font-weight: 800;
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.user-domain {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.primary-btn {
    background: var(--primary);
    color: #000;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.2s;
}

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

.primary-btn:disabled { opacity: 0.6; cursor: wait; }

.secondary-btn {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.file-input-label { cursor: pointer; }

.admin-btn {
    background: #334155;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.admin-btn.active {
    background: #059669;
    border-color: var(--primary);
}

/* Admin controls only show once the server has confirmed the session */
body:not(.is-admin) .admin-only { display: none !important; }

.nav-tabs {
    display: flex;
    background: #0d1322;
    padding: 0 var(--page-gutter);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.main-container {
    padding: 2rem var(--page-gutter);
    max-width: 1400px;
    margin: 0 auto;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.section-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1 1 280px;
    min-width: 0;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
}

.filter-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group select {
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    max-width: 100%;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: 1.5rem;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.2s;
}

.card { cursor: pointer; }

.card:hover {
    transform: translateY(-3px);
    border-color: #475569;
}

/* Key specs on cards and in the detail view */
.spec-list { margin-bottom: 1rem; }
.spec-list > div,
.spec-table > div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.35rem 0;
    border-bottom: 1px dashed var(--border);
    font-size: 0.875rem;
}
.spec-list dt, .spec-table dt { color: var(--text-muted); }
.spec-list dd, .spec-table dd { color: var(--text); font-weight: 600; text-align: right; overflow-wrap: anywhere; }

.card-footer-actions { display: flex; align-items: center; gap: 0.5rem; }
.details-btn { padding: 0.4rem 0.75rem; font-size: 0.85rem; }

.card-img-wrapper {
    height: 180px;
    background: #090d16;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.img-placeholder { color: var(--text-muted); font-size: 2.5rem; }

.card-badge-top {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    border: 1px solid var(--border);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    z-index: 3;
}

.card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-brand-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: #38bdf8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.35rem;
}

.card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; overflow-wrap: anywhere; }
.card-sku { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.75rem; font-family: monospace; overflow-wrap: anywhere; }
.card-specs { font-size: 0.9rem; color: #cbd5e1; margin-bottom: 1rem; line-height: 1.4; white-space: pre-line; overflow-wrap: anywhere; }

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 0.75rem;
}

.compare-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem 0;
}

.compare-check input { cursor: pointer; accent-color: var(--primary); width: 1.1rem; height: 1.1rem; }
.card-actions { display: flex; gap: 0.5rem; }

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover { color: var(--text); border-color: var(--text-muted); }
.icon-btn.delete:hover { color: var(--danger); border-color: var(--danger); }

.compare-bar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #090d16;
    border-top: 1px solid var(--primary);
    padding: 1rem var(--page-gutter) calc(1rem + env(safe-area-inset-bottom, 0px));
    z-index: 900;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.5);
}

.compare-bar-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.compare-actions { display: flex; gap: 1rem; }

.compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.compare-col {
    background: #0d1322;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
}

.compare-col h4 { font-size: 1.1rem; color: var(--primary); margin-bottom: 0.5rem; overflow-wrap: anywhere; }
.compare-col .comp-sku { font-family: monospace; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; }
.compare-col .comp-row { border-top: 1px solid var(--border); padding: 0.75rem 0; font-size: 0.9rem; }
.compare-col .comp-row strong { color: var(--text-muted); display: block; font-size: 0.8rem; margin-bottom: 0.25rem; }

.matrix-header { margin-bottom: 1.5rem; display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.matrix-header h2 { font-size: 1.5rem; margin-bottom: 0.25rem; }
.matrix-header p { color: var(--text-muted); }

.table-responsive {
    overflow-x: auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.compat-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.compat-table th, .compat-table td { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); }
.compat-table th { background: #0d1322; font-weight: 600; color: var(--text); white-space: nowrap; }
.compat-table td { white-space: nowrap; }
.compat-table tr:last-child td { border-bottom: none; }

.badge-full { background: rgba(16, 185, 129, 0.15); color: #34d399; padding: 0.25rem 0.5rem; border-radius: 4px; font-weight: 600; font-size: 0.8rem; }
.badge-reduced { background: rgba(245, 158, 11, 0.15); color: #fbbf24; padding: 0.25rem 0.5rem; border-radius: 4px; font-weight: 600; font-size: 0.8rem; }
.badge-no { background: rgba(239, 68, 68, 0.15); color: #f87171; padding: 0.25rem 0.5rem; border-radius: 4px; font-weight: 600; font-size: 0.8rem; }

.calc-wrapper { max-width: 800px; margin: 0 auto; }
.calc-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; }
.calc-card h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.calc-card .subtitle { color: var(--text-muted); margin-bottom: 1.5rem; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin-bottom: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; min-width: 0; }
.form-group.full-width { grid-column: span 2; }
.form-group label { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); }
.form-group select, .form-group input, .form-group textarea {
    background: var(--dark);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    width: 100%;
}

.result-box { background: #0d1322; border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; text-align: center; }
.result-box h3 { font-size: 1rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.runtime-number { font-size: 2.5rem; font-weight: 800; color: var(--primary); margin-bottom: 0.5rem; }

.quiz-container { max-width: 700px; margin: 0 auto; }
.quiz-top { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }

.flashcard-viewport {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    cursor: pointer;
    perspective: 1000px;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

/* Both faces share one grid cell, so the card grows to fit the longer side */
.flashcard-inner {
    display: grid;
    min-height: 300px;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flashcard-inner.flipped { transform: rotateY(180deg); }

.flashcard-front, .flashcard-back {
    grid-area: 1 / 1;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2.5rem;
}

.flashcard-back { transform: rotateY(180deg); background: #131c31; border-radius: 16px; }
.quiz-category-tag { background: rgba(16, 185, 129, 0.15); color: var(--primary); padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.8rem; font-weight: 600; margin-bottom: 1rem; }
.flashcard-front h3 { font-size: 1.25rem; line-height: 1.5; margin-bottom: 1.5rem; }
.flip-prompt { color: var(--text-muted); font-size: 0.85rem; }
.flashcard-back h4 { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
.flashcard-back p { font-size: 1.15rem; font-weight: 500; margin-bottom: 1.5rem; }
.verified-badge { color: var(--text-muted); font-size: 0.85rem; font-weight: 600; }
.quiz-controls { display: flex; justify-content: space-between; gap: 1rem; }

/* Admin-only editing controls */
.admin-panel { margin-top: 1.5rem; }
.admin-panel-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.admin-panel-header h3 { font-size: 1.15rem; margin-bottom: 0.25rem; }
.admin-panel-header .subtitle { margin-bottom: 0; font-size: 0.9rem; }
.admin-list { list-style: none; }
.admin-list-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border);
}
.admin-list-meta { display: block; color: var(--text-muted); font-size: 0.8rem; margin-top: 0.25rem; }
.quiz-admin-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px dashed var(--border);
}
.danger-btn:hover { color: var(--danger); border-color: var(--danger); }

.site-footer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem var(--page-gutter) 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
}

.site-footer .copyright { margin-top: 0.5rem; opacity: 0.8; }

.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active { display: flex; }
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 100%;
    max-width: 450px;
    max-height: calc(100vh - 2rem);
    max-height: calc(100dvh - 2rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 2rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}
.modal-content.large-modal { max-width: 700px; }
.modal-content.extra-large-modal { max-width: 950px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }

.close-modal {
    background: none;
    border: none;
    font-size: 1.75rem;
    line-height: 1;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
}
.close-modal:hover { color: var(--text); }

.modal-content input[type="password"],
.modal-content input[type="text"],
.modal-content input[type="url"],
.modal-content input[type="number"],
.modal-content select,
.modal-content textarea {
    width: 100%;
    background: var(--dark);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    margin-top: 0.5rem;
    margin-bottom: 1.25rem;
}

/* Form-group already spaces its label and box, so drop the modal input margins */
.modal-content .form-group > input,
.modal-content .form-group > select,
.modal-content .form-group > textarea { margin: 0; }

.form-error { color: #f87171; font-size: 0.9rem; margin: -0.5rem 0 1rem; }

/* Product detail view */
.detail-top { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 1.5rem; margin-bottom: 1.5rem; }
.detail-image {
    background: #090d16;
    border: 1px solid var(--border);
    border-radius: 12px;
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.detail-image img { width: 100%; height: 100%; object-fit: contain; }
.detail-head { display: flex; flex-direction: column; align-items: flex-start; gap: 0.5rem; }
.detail-head .card-sku { margin-bottom: 0; }
.voltage-pill { background: rgba(16, 185, 129, 0.15); color: var(--primary); padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
.detail-overview { color: #cbd5e1; line-height: 1.6; white-space: pre-line; }
.detail-admin { margin-top: 0.5rem; }
.detail-section { border-top: 1px solid var(--border); padding: 1.25rem 0; }
.detail-section h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 0.75rem; }
.feature-list { padding-left: 1.25rem; line-height: 1.7; color: #e2e8f0; }
.spec-table { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); column-gap: 2rem; }
.detail-notes { color: #cbd5e1; line-height: 1.6; white-space: pre-line; }
.chip-list { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.product-chip {
    background: #0d1322;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.6rem 0.9rem;
    color: var(--text);
    text-align: left;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.product-chip:hover { border-color: var(--primary); }
.product-chip span { color: var(--text-muted); font-size: 0.8rem; }

/* Product form */
.form-section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    margin: 0.5rem 0 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}
.form-section-title:first-of-type { border-top: none; padding-top: 0; }
.form-grid > .full-width { grid-column: 1 / -1; }
.field-hint { color: var(--text-muted); font-size: 0.85rem; }
.form-label { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); }

.image-field { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 1.25rem; margin-bottom: 1.5rem; align-items: start; }
.image-preview {
    aspect-ratio: 1;
    background: #090d16;
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.image-preview img { width: 100%; height: 100%; object-fit: cover; }
.image-controls { display: flex; flex-direction: column; gap: 0.5rem; }
.image-buttons { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.image-controls input[type="url"] { margin: 0; }

.modal-content input.compatible-filter {
    width: 100%;
    background: var(--dark);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 0.75rem;
}
.checkbox-list {
    max-height: 240px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}
.checkbox-list .field-hint { padding: 0.75rem; }
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}
.checkbox-row:last-child { border-bottom: none; }
.checkbox-row input { accent-color: var(--primary); width: 1.1rem; height: 1.1rem; flex-shrink: 0; }
.checkbox-row small { color: var(--text-muted); }

/* Spec field rows in the category editor */
.rows-field .row-items { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 0.5rem; }
.row-item { display: flex; gap: 0.5rem; align-items: center; }
.modal-content .row-item input[type="text"] { margin: 0; flex: 1; min-width: 0; }
.rows-field > .secondary-btn { align-self: flex-start; }

/* Flashcard topic picker */
.quiz-options { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-bottom: 1.25rem; }
.quiz-options label { color: var(--text-muted); font-size: 0.9rem; }
.quiz-options select {
    flex: 1 1 200px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

/* Runtime Matrix */
.matrix-brand { margin-bottom: 2rem; }
.matrix-brand-title { display: flex; align-items: center; gap: 0.75rem; font-size: 1.15rem; margin-bottom: 0.75rem; }
.matrix-brand-logo { height: 28px; width: auto; max-width: 120px; object-fit: contain; }
.runtime-table th, .runtime-table td { white-space: normal; vertical-align: top; }
.runtime-table thead th { min-width: 140px; }
.runtime-table td { text-align: center; vertical-align: middle; }
.runtime-table .sticky-col { position: sticky; left: 0; z-index: 1; background: #0d1322; min-width: 180px; text-align: left; }
.runtime-table tbody .sticky-col { background: var(--card-bg); }
.matrix-link {
    background: none;
    border: none;
    padding: 0;
    color: var(--text);
    font: inherit;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
}
.matrix-link:hover { color: var(--primary); text-decoration: underline; }
.matrix-sub { display: block; color: var(--text-muted); font-size: 0.75rem; font-weight: 400; margin-top: 0.2rem; }
.matrix-legend { color: var(--text-muted); font-size: 0.85rem; line-height: 2; }
.runtime-stated { color: var(--text); font-weight: 700; }
.runtime-estimate { color: #fbbf24; font-weight: 600; }
.runtime-missing { color: var(--text-muted); font-weight: 700; cursor: help; }
.runtime-na { color: #475569; }
.default-pair { color: var(--primary); font-size: 0.8rem; cursor: help; }

/* Runtimes / Charge Times switch */
.mode-switch { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.mode-btn {
    background: var(--card-bg);
    color: var(--text-muted);
    border: none;
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.mode-btn + .mode-btn { border-left: 1px solid var(--border); }
.mode-btn.active { background: var(--primary); color: #000; }

/* Manufacturer default battery / charger on cards */
.default-setup {
    background: #0d1322;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.75rem;
}
.setup-title { display: block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 0.25rem; }
.default-setup ul { list-style: none; }
.default-setup li {
    display: grid;
    grid-template-columns: 1.1rem minmax(0, 1fr) auto;
    gap: 0.5rem;
    align-items: center;
    font-size: 0.85rem;
    padding: 0.2rem 0;
}
.default-setup li i { color: var(--primary); font-size: 0.8rem; }
.setup-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: #cbd5e1; }
.setup-value { font-weight: 600; white-space: nowrap; }

/* Per-battery runtime inputs in the product form */
.runtime-inputs { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.5rem; }
.runtime-inputs .form-label { margin-bottom: 0.25rem; }
.runtime-input-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 180px); gap: 0.75rem; align-items: center; }
.runtime-input-row label { font-size: 0.9rem; }
.runtime-input-row small { color: var(--text-muted); }
.modal-content .runtime-input-row input[type="text"] { margin: 0; }
#runtimeDataSection .field-hint { margin-bottom: 1rem; }

/* Brand logos */
.admin-list-main { display: flex; align-items: center; gap: 0.75rem; min-width: 0; }
.logo-thumb {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 8px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: #94a3b8;
}
.logo-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.detail-brand-logo { height: 36px; width: auto; max-width: 160px; object-fit: contain; }

/* Tabs hidden from visitors (admins still see them) */
.tab-btn.hidden-for-visitors { opacity: 0.6; }
.tab-btn.hidden-for-visitors::after {
    content: "\f070";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.75rem;
    margin-left: 0.25rem;
}

/* On/off switch */
.switch { position: relative; display: inline-block; width: 46px; height: 26px; flex-shrink: 0; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; z-index: 1; }
.switch-track {
    position: absolute;
    inset: 0;
    background: #475569;
    border-radius: 26px;
    transition: background 0.2s;
}
.switch-track::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    left: 3px;
    top: 3px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
}
.switch input:checked + .switch-track { background: var(--primary); }
.switch input:checked + .switch-track::before { transform: translateX(20px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--primary); outline-offset: 2px; }

/* Manage Lists tab */
.manage-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); gap: 1.5rem; }
.manage-grid .admin-panel { margin-top: 0; }
.manage-wide { grid-column: 1 / -1; }

.modal-footer { display: flex; justify-content: flex-end; gap: 1rem; }

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    max-width: calc(100% - 2rem);
    background: #059669;
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 10px 15px rgba(0,0,0,0.3);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.toast.error { background: #b91c1c; }
.toast.show { opacity: 1; }
body.has-compare-bar .toast { bottom: calc(6rem + env(safe-area-inset-bottom, 0px)); }

@media (max-width: 768px) {
    :root { --page-gutter: 1rem; }

    .app-header { flex-direction: column; align-items: flex-start; }
    .app-header h1 { font-size: 1.05rem; }
    .main-container { padding-top: 1.25rem; }
    .section-toolbar { margin-bottom: 1.25rem; }
    .filter-group select { flex: 1 1 140px; }

    .form-grid { grid-template-columns: 1fr; }
    .form-group.full-width { grid-column: span 1; }
    .calc-card, .modal-content { padding: 1.25rem; }
    .detail-top { grid-template-columns: 1fr; }
    .image-field { grid-template-columns: 96px minmax(0, 1fr); gap: 1rem; }
    .runtime-input-row { grid-template-columns: 1fr; gap: 0.25rem; }
    .runtime-table .sticky-col { min-width: 140px; }
    .flashcard-front, .flashcard-back { padding: 1.5rem; }

    .compare-actions { width: 100%; }
    .compare-actions button { flex: 1; }
    body.has-compare-bar .toast { bottom: calc(8.5rem + env(safe-area-inset-bottom, 0px)); }

    .toast { left: 1rem; right: 1rem; bottom: 1rem; text-align: center; }
}