/* ==========================================================================
   Electroasesores - Catálogo PWA
   Mobile-first, claro, minimalista, orientado a retail/electrodomésticos
   ========================================================================== */

:root {
    --color-primary: #0e6ef2;
    --color-primary-dark: #0a55b8;
    --color-primary-light: #e8f1fe;
    --color-bg: #f4f6f9;
    --color-card: #ffffff;
    --color-text: #1c2430;
    --color-text-secondary: #5b6572;
    --color-border: #e3e8ef;
    --color-success: #16a34a;
    --color-danger: #dc2626;
    --color-warning: #d97706;
    --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 12px rgba(16, 24, 40, 0.06);
    --shadow-card-hover: 0 2px 4px rgba(16, 24, 40, 0.06), 0 8px 20px rgba(16, 24, 40, 0.10);
    --radius: 16px;
    --radius-sm: 10px;
    --max-width: 1080px;
    --transition: all 0.2s ease;
    --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.45;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img {
    max-width: 100%;
    height: auto;
}

.hidden {
    display: none !important;
}

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

.app-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px;
    padding-top: calc(12px + env(safe-area-inset-top));
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    position: relative;
}

.top-logo {
    display: block;
    width: clamp(132px, 20vw, 190px);
    height: auto;
    object-fit: contain;
}

.status-indicators {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
}

.pill-online {
    color: var(--color-success);
    background: #eaf8ef;
}

.pill-offline {
    color: var(--color-danger);
    background: #fdecec;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

.dot-green {
    background: var(--color-success);
}

.dot-red {
    background: var(--color-danger);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

.app-title {
    margin: 0;
    font-size: clamp(1.15rem, 4.5vw, 1.5rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.app-subtitle {
    margin: 2px 0 0;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
}

/* ==========================================================================
   Main layout
   ========================================================================== */

#app-main {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px;
}

.home-intro {
    margin: 20px auto 18px;
    max-width: 560px;
    text-align: center;
}

.view {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Search
   ========================================================================== */

.search-wrap {
    position: relative;
    margin: 0 auto 14px;
    max-width: 560px;
}

.search-input {
    width: 100%;
    font: inherit;
    font-size: 1rem;
    padding: 13px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-card);
    color: var(--color-text);
    outline: none;
    transition: var(--transition);
    -webkit-appearance: none;
}

.search-input::placeholder {
    color: #9aa4b2;
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(14, 110, 242, 0.15);
}

.search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    max-height: 320px;
    overflow-y: auto;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card-hover);
    z-index: 30;
}

.search-result-item {
    display: flex;
    width: 100%;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 0;
    background: none;
    text-align: left;
    font: inherit;
    cursor: pointer;
    border-bottom: 1px solid var(--color-border);
    transition: background 0.15s ease;
}

.search-result-item:last-child {
    border-bottom: 0;
}

.search-result-item:hover,
.search-result-item:focus-visible {
    background: var(--color-primary-light);
    outline: none;
}

.search-result-thumb {
    width: 40px;
    height: 40px;
    object-fit: contain;
    flex-shrink: 0;
    padding: 4px;
    background: #f8fafc;
    border-radius: 8px;
}

.search-result-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.search-result-path {
    font-size: 0.78rem;
    color: var(--color-text-secondary);
}

.search-result-badge {
    margin-left: auto;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 3px 8px;
    border-radius: 999px;
    flex-shrink: 0;
}

.search-empty {
    padding: 16px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
}

/* ==========================================================================
   Category grid
   ========================================================================== */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 18px 12px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    cursor: pointer;
    font: inherit;
    color: var(--color-text);
    text-align: center;
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
}

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

.category-card:active {
    transform: translateY(0);
    box-shadow: var(--shadow-card);
}

.category-card:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.category-icon {
    width: 82px;
    height: 82px;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.category-card:hover .category-icon {
    transform: scale(1.06);
}

.category-name {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.25;
}

.category-count {
    font-size: 0.76rem;
    color: var(--color-text-secondary);
}

.sub-icon {
    width: 48px;
    height: 48px;
}

.subcategory-card {
    padding: 14px 12px;
}

.subcategory-card .category-name {
    font-size: 0.88rem;
}

/* ==========================================================================
   Category view (subcategories)
   ========================================================================== */

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding: 10px 16px;
    border: 1.5px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-text);
    font: inherit;
    font-weight: 600;
    font-size: 0.92rem;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.back-button:hover,
.back-button:focus-visible {
    border-color: var(--color-primary);
    color: var(--color-primary);
    outline: none;
}

.back-icon {
    font-size: 1.1em;
    line-height: 1;
}

.subcategory-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border);
}

.subcategory-header .category-icon {
    width: 56px;
    height: 56px;
}

.subcategory-header h2 {
    margin: 0;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
}

/* ==========================================================================
   Sync status / progress
   ========================================================================== */

.sync-status {
    margin-bottom: 16px;
}

.sync-box {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-card);
    max-width: 560px;
}

.sync-box .sync-title {
    margin: 0 0 4px;
    font-weight: 700;
    font-size: 0.98rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sync-box .sync-detail {
    margin: 0;
    font-size: 0.88rem;
    color: var(--color-text-secondary);
}

.sync-box .sync-cmd {
    margin: 8px 0 0;
    padding: 8px 10px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
    background: #f1f3f8;
    border-radius: 8px;
    white-space: pre-wrap;
    word-break: break-word;
}

.sync-progress-track {
    height: 10px;
    width: 100%;
    background: #eef1f6;
    border-radius: 999px;
    overflow: hidden;
    margin: 12px 0 8px;
}

.sync-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), #3b8bff);
    border-radius: 999px;
    transition: width 0.3s ease;
}

.sync-meta {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--color-text-secondary);
}

.sync-errors {
    margin: 10px 0 0;
    padding-top: 10px;
    border-top: 1px dashed var(--color-border);
    font-size: 0.85rem;
    color: var(--color-danger);
}

.sync-retry-row {
    margin-top: 10px;
}

.sync-done {
    color: var(--color-success);
    font-weight: 600;
}

.sync-error-tag {
    color: var(--color-danger);
}

.sync-box.is-retrying .sync-progress-bar {
    background: linear-gradient(90deg, var(--color-warning), #f59e0b);
}

/* Modal bloqueante durante la descarga inicial y los reintentos. */
.sync-loading-view {
    position: fixed;
    inset: 0;
    z-index: 70;
    display: grid;
    place-items: center;
    padding: 24px;
    background: rgba(16, 24, 40, 0.62);
    backdrop-filter: blur(5px);
}

.sync-loading-card {
    width: min(100%, 390px);
    padding: 30px 26px 24px;
    border: 1px solid rgba(255, 255, 255, 0.78);
    border-radius: 22px;
    background: var(--color-card);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.sync-loading-spinner {
    width: 48px;
    height: 48px;
    margin: 0 auto 18px;
    border: 5px solid #dbeafe;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: sync-spin 0.85s linear infinite;
}

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

.sync-loading-kicker {
    margin: 0 0 4px;
    color: var(--color-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.sync-loading-card h2 {
    margin: 0;
    font-size: 1.25rem;
}

.sync-loading-card > p:not(.sync-loading-kicker):not(.sync-loading-errors) {
    margin: 8px 0 18px;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
}

.sync-loading-track {
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: #e9eef5;
}

.sync-loading-bar {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--color-primary), #47a0ff);
    transition: width 0.25s ease;
}

.sync-loading-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
    color: var(--color-text-secondary);
    font-size: 0.84rem;
}

.sync-loading-errors {
    margin: 14px 0 0;
    color: var(--color-warning);
    font-size: 0.82rem;
}

body.sync-modal-open {
    overflow: hidden;
}

/* ==========================================================================
   Buttons & action bar
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font: inherit;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 12px 20px;
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
    min-width: 44px;
    min-height: 44px;
}

.btn:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

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

.btn-secondary:hover {
    background: #d8e8fd;
}

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

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

.btn-sync[disabled] {
    opacity: 0.6;
    cursor: default;
}

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

.btn-install:hover {
    background: #333f4f;
}

.action-bar {
    position: sticky;
    bottom: calc(12px + env(safe-area-inset-bottom));
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 0 16px 12px;
    z-index: 20;
}

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

.app-footer {
    text-align: center;
    padding: 8px 16px calc(20px + env(safe-area-inset-bottom));
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.app-footer p {
    margin: 2px 0;
}

.icon-attribution a {
    color: inherit;
}

/* ==========================================================================
   PDF status modal
   ========================================================================== */

.pdf-status-view {
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgba(16, 24, 40, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.pdf-status-card {
    background: var(--color-card);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    max-width: 360px;
    width: 100%;
    box-shadow: var(--shadow-card-hover);
}

.pdf-status-icon {
    font-size: 2.4rem;
    margin-bottom: 8px;
}

.pdf-status-card h2 {
    margin: 0 0 8px;
    font-size: 1.15rem;
}

.pdf-status-card p {
    margin: 0 0 18px;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
}

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

@media (min-width: 480px) {
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

@media (min-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .category-card {
        padding: 22px 14px;
    }

    .category-icon {
        width: 96px;
        height: 96px;
    }
}

@media (min-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}