/* =============================================
   ENGLISH ACADEMY RVN — frases.css
   Generador de Frases Super
   Prefijo: .fs-
   ============================================= */

/* ── BODY ── */
html { overflow-x: hidden; }
body {
    background: var(--bg-darker);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;
}

/* ══════════════════════════════════════════════
   NAV
══════════════════════════════════════════════ */
.fs-nav {
    position: sticky;
    top: 0;
    z-index: 200;
    background: rgba(9, 14, 22, 0.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
}

.fs-nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    gap: 16px;
}

.fs-nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.fs-logo {
    font-size: 0.9375rem;
    font-weight: 800;
    color: var(--text-primary);
    white-space: nowrap;
    flex-shrink: 0;
    text-decoration: none;
}

.fs-logo span {
    color: var(--primary-light);
}

.fs-logo .fs-logo-rvn {
    color: var(--primary-light);
}

.fs-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.fs-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.fs-breadcrumb a:hover {
    color: var(--primary-light);
}

.fs-breadcrumb i {
    font-size: 0.5625rem;
}

.fs-breadcrumb .active {
    color: var(--text-secondary);
}

.fs-nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* Plan badge */
.fs-nav-plan {
    display: flex;
    align-items: center;
}

.nav-plan-free {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(74, 144, 217, .08);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 4px 12px;
}

.nav-upgrade-link {
    color: var(--primary-light);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.nav-upgrade-link:hover {
    color: var(--text-primary);
}

.nav-plan-premium {
    display: none;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--premium-gold);
    background: rgba(255, 215, 0, .08);
    border: 1px solid rgba(255, 215, 0, .2);
    border-radius: 20px;
    padding: 4px 12px;
}

/* Font switcher */
.font-switcher {
    display: flex;
    align-items: center;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    padding: 2px;
    gap: 1px;
}

.fs-btn-font {
    font-family: 'Poppins', sans-serif;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 3px 8px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 7px;
    transition: var(--transition);
    line-height: 1;
}

.fs-btn-font:nth-child(1) {
    font-size: 0.5625rem;
}

.fs-btn-font:nth-child(3) {
    font-size: 0.875rem;
}

.fs-btn-font.active {
    background: var(--primary-glow);
    color: var(--primary-light);
}

/* Theme dot */
.theme-dot-nav {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: var(--transition);
}

.theme-dot-nav:hover {
    border-color: var(--border-hover);
    color: var(--primary-light);
}

/* Theme panel flotante */
.theme-panel-float {
    position: fixed;
    top: 68px;
    right: 16px;
    z-index: 300;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 8px;
    display: none;
    flex-direction: column;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    min-width: 150px;
}

.tpf-opt {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.tpf-opt:hover {
    background: var(--primary-glow);
    color: var(--text-primary);
}

.tpf-opt.active {
    color: var(--primary-light);
    background: var(--primary-glow);
}

.tpf-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* User chip */
.fs-user-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 4px 12px 4px 4px;
    text-decoration: none;
    transition: var(--transition);
}

.fs-user-chip:hover {
    border-color: var(--border-hover);
}

.fs-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-glow);
    border: 1px solid var(--border-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-light);
    flex-shrink: 0;
}

.fs-user-chip span {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    max-width: 80px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Logout */
.fs-logout {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-dark);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fs-logout:hover {
    border-color: rgba(229, 57, 53, .4);
    color: #ff7070;
    background: rgba(229, 57, 53, .06);
}

/* ══════════════════════════════════════════════
   PANTALLA DE SELECCIÓN DE ÁREA
══════════════════════════════════════════════ */
.fs-selector {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

.fs-selector-header {
    text-align: center;
    margin-bottom: 28px;
}

.fs-selector-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.fs-selector-header p {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Buscador de áreas */
.fs-selector-search-wrap {
    max-width: 480px;
    margin: 0 auto 36px;
    position: relative;
}

.fs-selector-search-wrap i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.875rem;
    pointer-events: none;
}

.fs-selector-search-wrap input {
    width: 100%;
    padding: 11px 16px 11px 40px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
    outline: none;
}

.fs-selector-search-wrap input:focus {
    border-color: var(--border-hover);
}

.fs-selector-search-wrap input::placeholder {
    color: var(--text-muted);
}

/* Grid de industrias */
.fs-industries-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Bloque de industria */
.fs-industry-block {}

.fs-industry-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.fs-industry-title span {
    font-size: 1rem;
}

/* Grid de tarjetas de área */
.fs-areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

/* Tarjeta de área */
.fs-area-card {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px 16px;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.fs-area-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: 0 6px 24px rgba(0, 0, 0, .3);
}

.fs-area-card.locked {
    opacity: 0.55;
    cursor: pointer;
}

.fs-area-card.locked:hover {
    opacity: 0.75;
}

.fs-area-card.no-disponible {
    cursor: not-allowed;
}

.fs-area-card.no-disponible:hover {
    transform: none;
    border-color: var(--border);
    box-shadow: none;
}

.fs-area-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.fs-area-emoji-big {
    font-size: 1.75rem;
    line-height: 1;
}

.fs-area-badges {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.fs-badge {
    font-size: 0.625rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    white-space: nowrap;
}

.fs-badge-free {
    background: rgba(76, 175, 80, .12);
    color: #69db7c;
    border: 1px solid rgba(76, 175, 80, .25);
}

.fs-badge-premium {
    background: rgba(255, 215, 0, .1);
    color: var(--premium-gold);
    border: 1px solid rgba(255, 215, 0, .2);
}

.fs-badge-pronto {
    background: rgba(74, 144, 217, .1);
    color: var(--primary-light);
    border: 1px solid var(--border);
}

.fs-badge-nuevo {
    background: rgba(76, 175, 80, .15);
    color: #69db7c;
    border: 1px solid rgba(76, 175, 80, .3);
    animation: pulseNuevo 2s ease infinite;
}

@keyframes pulseNuevo {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

.fs-area-label {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.fs-area-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.fs-area-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
}

.fs-area-niveles {
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-weight: 600;
}

.fs-area-total-frases {
    font-size: 0.6875rem;
    color: var(--primary-light);
    font-weight: 600;
}

/* Mini progreso en tarjeta */
.fs-area-prog-bar {
    height: 3px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}

.fs-area-prog-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.4s ease;
}

/* ══════════════════════════════════════════════
   LAYOUT PRINCIPAL (sidebar + main)
══════════════════════════════════════════════ */
.fs-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 60px);
    max-width: 1400px;
    margin: 0 auto;
}

/* ══════════════════════════════════════════════
   SIDEBAR
══════════════════════════════════════════════ */
.fs-sidebar {
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    background: var(--bg-dark);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.fs-sidebar-header {
    padding: 16px 14px 12px;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

/* Botón volver */
.fs-back-btn {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.fs-back-btn:hover {
    color: var(--primary-light);
}

.fs-back-btn i {
    font-size: 0.6875rem;
}

/* Info del área activa */
.fs-area-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.fs-area-emoji {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.fs-area-label {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.fs-area-total {
    font-size: 0.6875rem;
    color: var(--primary-light);
    font-weight: 600;
}

/* Buscador de frases */
.fs-search-wrap {
    position: relative;
}

.fs-search-wrap i {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.75rem;
    pointer-events: none;
}

.fs-search-wrap input {
    width: 100%;
    padding: 8px 10px 8px 30px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.8125rem;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
    outline: none;
}

.fs-search-wrap input:focus {
    border-color: var(--border-hover);
}

.fs-search-wrap input::placeholder {
    color: var(--text-muted);
}

/* Banner resume */
.fs-resume-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(74, 144, 217, 0.12), rgba(74, 144, 217, 0.06));
    border: 1px solid rgba(74, 144, 217, 0.3);
    border-radius: 10px;
    margin: 0 10px 4px;
    padding: 8px 10px;
    font-size: 0.75rem;
    color: var(--primary-light);
    animation: bannerIn 0.35s ease;
    flex-shrink: 0;
}

@keyframes bannerIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fs-resume-banner i {
    font-size: 0.8125rem;
    color: var(--primary);
    flex-shrink: 0;
}

.fs-resume-banner span {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.fs-resume-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 3px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    flex-shrink: 0;
    transition: opacity 0.2s;
}

.fs-resume-btn:hover {
    opacity: 0.82;
}

/* Lista de categorías */
.fs-cat-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.fs-cat-list::-webkit-scrollbar {
    width: 4px;
}

.fs-cat-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.fs-cat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 0;
}

.fs-cat-item:hover {
    background: var(--primary-glow);
}

.fs-cat-item.active {
    background: var(--primary-glow);
    border-right: 2px solid var(--primary);
}

.fs-cat-item.locked {
    opacity: 0.45;
    cursor: pointer;
}

.fs-cat-item.locked:hover {
    background: rgba(229, 57, 53, .04);
}

.fs-cat-emoji {
    font-size: 1rem;
    flex-shrink: 0;
    width: 22px;
    text-align: center;
}

.fs-cat-body {
    flex: 1;
    min-width: 0;
}

.fs-cat-name-sb {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fs-cat-item.active .fs-cat-name-sb {
    color: var(--primary-light);
}

.fs-cat-count {
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.fs-cat-lock {
    font-size: 0.6875rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Loading state */
.fs-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ══════════════════════════════════════════════
   MAIN
══════════════════════════════════════════════ */
.fs-main {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    min-height: calc(100vh - 60px);
}

/* Header de categoría activa */
.fs-content-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.fs-content-title-block {
    flex: 1;
    min-width: 0;
}

.fs-cat-name {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.fs-cat-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 3px;
    font-weight: 500;
}

/* Stat pills */
.fs-stat-pills {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
    align-items: center;
}

.fs-stat-pill {
    font-size: 0.725rem;
    padding: 4px 11px;
    border-radius: 20px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    background: var(--bg-dark);
    font-weight: 600;
    white-space: nowrap;
}

.fs-stat-pill.accent {
    background: var(--primary-glow);
    color: var(--primary-light);
    border-color: var(--border-hover);
}

.fs-stat-pill.ok {
    color: #69db7c;
    border-color: rgba(76, 175, 80, .3);
    background: rgba(76, 175, 80, .06);
}

.fs-stat-pill.err {
    color: #ff7070;
    border-color: rgba(229, 57, 53, .3);
    background: rgba(229, 57, 53, .06);
}

.fs-stat-pill.racha {
    color: #ffb347;
    border-color: rgba(255, 152, 0, .35);
    background: rgba(255, 152, 0, .08);
}

/* Badge de nivel CEFR */
.fs-pill-nivel {
    font-size: 0.6875rem !important;
    font-weight: 800 !important;
    letter-spacing: 0.5px;
}

/* ══════════════════════════════════════════════
   PANEL DE CONTROLES
══════════════════════════════════════════════ */
.fs-controls-panel {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.fs-controls-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.fs-ctrl-label {
    font-size: 0.725rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
    font-weight: 500;
}

/* Chips de cantidad y orden */
.fs-chips {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.fs-chip {
    font-size: 0.775rem;
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
}

.fs-chip:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.fs-chip.active {
    background: var(--primary-glow);
    color: var(--primary-light);
    border-color: var(--border-hover);
}

/* Chips de nivel CEFR con colores */
.fs-nchip {
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.fs-nchip:hover {
    border-color: var(--border-hover);
}

.fs-nchip.on[data-nivel="A1"] {
    background: rgba(76, 175, 80, .12);
    color: #69db7c;
    border-color: rgba(76, 175, 80, .3);
}

.fs-nchip.on[data-nivel="A2"] {
    background: rgba(74, 144, 217, .12);
    color: var(--primary-light);
    border-color: rgba(74, 144, 217, .3);
}

.fs-nchip.on[data-nivel="B1"] {
    background: rgba(255, 152, 0, .12);
    color: #ffb347;
    border-color: rgba(255, 152, 0, .3);
}

.fs-nchip.on[data-nivel="B2"] {
    background: rgba(229, 57, 53, .12);
    color: #ff7070;
    border-color: rgba(229, 57, 53, .3);
}

.fs-nchip.on[data-nivel="C1"] {
    background: rgba(156, 39, 176, .12);
    color: #ce93d8;
    border-color: rgba(156, 39, 176, .3);
}

.fs-nchip.on[data-nivel="C2"] {
    background: rgba(255, 215, 0, .12);
    color: var(--premium-gold);
    border-color: rgba(255, 215, 0, .3);
}

/* Chips de tiempo verbal */
.fs-tchip {
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

.fs-tchip:hover {
    border-color: var(--border-hover);
    color: var(--text-secondary);
}

.fs-tchip.on {
    background: var(--primary-glow);
    color: var(--primary-light);
    border-color: var(--border);
}

/* Fila de audio + modos */
.fs-controls-audio {
    border-top: 1px solid var(--border);
    padding-top: 10px;
    flex-wrap: wrap;
    row-gap: 8px;
}

.fs-audio-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.fs-select {
    font-size: 0.775rem;
    padding: 4px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.fs-select:hover {
    border-color: var(--border-hover);
}

.fs-mode-group {
    display: flex;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin-left: auto;
}

.fs-mode-opt {
    font-size: 0.725rem;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--text-muted);
    border: none;
    background: transparent;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}

.fs-mode-opt:hover {
    color: var(--text-secondary);
}

.fs-mode-opt.active {
    background: var(--primary-glow);
    color: var(--primary-light);
}

.fs-mode-mic {
    border-left: 1px solid var(--border);
}

/* ══════════════════════════════════════════════
   BARRA DE PROGRESO
══════════════════════════════════════════════ */
.fs-progress-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.fs-prog-bar {
    flex: 1;
    height: 4px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.fs-prog-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.4s ease;
    width: 0%;
}

.fs-prog-label {
    font-size: 0.725rem;
    color: var(--text-muted);
    white-space: nowrap;
    font-weight: 600;
}

/* ══════════════════════════════════════════════
   CARD STACK
══════════════════════════════════════════════ */
.fs-card-area {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.fs-card-stack {
    position: relative;
    min-height: 220px;
}

.fs-card-bg {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 28px);
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.fs-card-bg1 {
    bottom: -7px;
    height: 100%;
    z-index: 1;
}

.fs-card-bg2 {
    bottom: -13px;
    width: calc(100% - 52px);
    height: 100%;
    z-index: 0;
    opacity: .45;
}

.fs-main-card {
    position: relative;
    z-index: 2;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .28);
}

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

.fs-main-card.flip {
    animation: fsFlip 0.32s ease;
}

@keyframes fsFlip {
    0% {
        opacity: 1;
        transform: scale(1);
    }

    45% {
        opacity: 0;
        transform: scale(0.96) translateY(-4px);
    }

    55% {
        opacity: 0;
        transform: scale(0.96) translateY(-4px);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Cabecera de carta */
.fs-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.fs-card-top-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.fs-card-tense {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    font-weight: 700;
}

.fs-card-counter {
    font-size: 0.725rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Badge de nivel en carta */
.fs-nivel-badge {
    font-size: 0.625rem;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 8px;
    letter-spacing: 0.4px;
}

/* Colores dinámicos por nivel — aplicados via JS con data-nivel */
.fs-nivel-badge[data-nivel="A1"] {
    background: rgba(76, 175, 80, .15);
    color: #69db7c;
}

.fs-nivel-badge[data-nivel="A2"] {
    background: rgba(74, 144, 217, .15);
    color: var(--primary-light);
}

.fs-nivel-badge[data-nivel="B1"] {
    background: rgba(255, 152, 0, .15);
    color: #ffb347;
}

.fs-nivel-badge[data-nivel="B2"] {
    background: rgba(229, 57, 53, .15);
    color: #ff7070;
}

.fs-nivel-badge[data-nivel="C1"] {
    background: rgba(156, 39, 176, .15);
    color: #ce93d8;
}

.fs-nivel-badge[data-nivel="C2"] {
    background: rgba(255, 215, 0, .15);
    color: var(--premium-gold);
}

.fs-countdown {
    font-size: 0.625rem;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 8px;
    background: rgba(74,144,217,.15);
    color: var(--primary-light);
    letter-spacing: 0.4px;
    min-width: 24px;
    text-align: center;
}
.fs-card-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Frase en inglés */
.fs-card-en {
    font-size: var(--mod-font-en, 1.125rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.45;
}

.fs-card-en-ref {
    color: var(--primary-light);
    font-weight: 600;
}

/* Divisor */
.fs-card-divider {
    height: 1px;
    background: var(--border);
    border-radius: 1px;
}

/* Traducción */
.fs-card-es {
    font-size: var(--mod-font-es, 1rem);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.45;
}

/* Meta: verbo + patrón + tags */
.fs-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.fs-meta-verbo {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--primary-light);
    background: var(--primary-glow);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px 8px;
}

.fs-meta-patron {
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-weight: 500;
    font-family: 'Courier New', monospace;
}

.fs-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.fs-tag {
    font-size: 0.625rem;
    padding: 2px 7px;
    border-radius: 6px;
    background: var(--bg-darker);
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.fs-tag:hover {
    border-color: var(--border-hover);
    color: var(--text-secondary);
}

/* ── Ánimo escritura ── */
.fs-card-animo {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 500;
    font-style: italic;
}

/* ── Área de escritura ── */
.fs-escritura-area {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.fs-esc-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
    color: var(--text-primary);
    resize: none;
    outline: none;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.fs-esc-input::placeholder {
    color: var(--text-muted);
}

.fs-esc-input:focus {
    border-color: var(--border-hover);
}

.fs-esc-input.correct {
    border-color: rgba(76, 175, 80, .5);
    background: rgba(76, 175, 80, .05);
}

.fs-esc-input.wrong {
    border-color: rgba(229, 57, 53, .5);
    background: rgba(229, 57, 53, .05);
}

.fs-esc-feedback {
    font-size: 0.8125rem;
    font-weight: 600;
    min-height: 18px;
    transition: opacity 0.2s;
}

.fs-esc-feedback.show-correct {
    color: #69db7c;
}

.fs-esc-feedback.show-wrong {
    color: #ff7070;
}

/* ── Área de micrófono ── */
.fs-mic-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.fs-mic-countdown {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(229, 57, 53, .12);
    border: 2px solid rgba(229, 57, 53, .3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    color: #ff7070;
}

.fs-mic-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-darker);
    color: var(--text-muted);
    font-family: 'Poppins', sans-serif;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 120px;
}

.fs-mic-btn i {
    font-size: 1.5rem;
}

.fs-mic-btn:hover {
    border-color: var(--border-hover);
    color: var(--primary-light);
}

.fs-mic-btn.listening {
    border-color: rgba(229, 57, 53, .4);
    background: rgba(229, 57, 53, .06);
    color: #ff7070;
    animation: micPulse 1.2s ease infinite;
}

@keyframes micPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(229, 57, 53, .3);
    }

    50% {
        box-shadow: 0 0 0 8px rgba(229, 57, 53, 0);
    }
}

.fs-mic-transcript {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    min-height: 20px;
    font-style: italic;
}

/* ══════════════════════════════════════════════
   BOTONES DE NAVEGACIÓN
══════════════════════════════════════════════ */
.fs-nav-btns {
    display: flex;
    gap: 8px;
    align-items: center;
}

.fs-btn-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-dark);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    flex: 1;
    justify-content: center;
}

.fs-btn-nav:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.fs-btn-primary {
    flex: 2;
    background: var(--primary-glow);
    border-color: var(--border-hover);
    color: var(--primary-light);
}

.fs-btn-primary:hover {
    background: rgba(74, 144, 217, .18);
}

.fs-btn-pause {
    flex: 0;
    padding: 10px 14px;
    border-color: rgba(255, 193, 7, 0.3);
    color: #ffc107;
}

.fs-btn-pause:hover {
    border-color: rgba(255, 193, 7, .5);
    background: rgba(255, 193, 7, .07);
}

.fs-btn-pause.paused {
    border-color: rgba(255, 193, 7, .5);
    color: #ffc107;
    background: rgba(255, 193, 7, .1);
}

.fs-btn-autocon {
    flex: 0;
    padding: 10px 16px;
    font-size: 0.8rem;
    border-color: rgba(76, 175, 80, .3);
    color: #69db7c;
    white-space: nowrap;
}

.fs-btn-autocon:hover {
    border-color: rgba(76, 175, 80, .5);
    background: rgba(76, 175, 80, .08);
}

.fs-btn-autocon.playing {
    background: rgba(76, 175, 80, .15);
    border-color: rgba(76, 175, 80, .6);
    color: #69db7c;
}

.fs-btn-reset {
    flex: 0;
    padding: 10px 14px;
}

.fs-btn-reset:hover {
    border-color: rgba(255, 152, 0, .35);
    color: #ffb347;
    background: rgba(255, 152, 0, .06);
}

.fs-btn-reset:hover i {
    transform: rotate(180deg);
    transition: transform 0.4s ease;
}

.fs-btn-audio {
    flex: 0;
    padding: 10px 14px;
}

.fs-btn-audio:hover {
    border-color: var(--border-hover);
    color: var(--primary-light);
}

/* ══════════════════════════════════════════════
   ESTADO VACÍO
══════════════════════════════════════════════ */
.fs-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    gap: 12px;
    flex: 1;
}

.fs-empty-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.fs-empty-state h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.fs-empty-state p {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 320px;
    line-height: 1.5;
}

/* ══════════════════════════════════════════════
   PREMIUM OVERLAY
══════════════════════════════════════════════ */
.fs-premium-overlay {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(9, 14, 22, .85);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.fs-premium-overlay.show {
    display: flex;
}

.fs-premium-modal {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.fs-premium-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 215, 0, .1);
    border: 1px solid rgba(255, 215, 0, .2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--premium-gold);
}

.fs-premium-modal h2 {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--text-primary);
}

.fs-premium-modal p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.fs-premium-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    text-align: left;
}

.fs-pf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.fs-pf-item i {
    color: var(--primary-light);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.fs-btn-premium {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #1a1000;
    font-size: 0.9375rem;
    font-weight: 800;
    font-family: 'Poppins', sans-serif;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    width: 100%;
    justify-content: center;
}

.fs-btn-premium:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.fs-btn-back {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.fs-btn-back:hover {
    border-color: var(--border-hover);
    color: var(--text-secondary);
}

/* ══════════════════════════════════════════════
   TOAST
══════════════════════════════════════════════ */
.fs-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    z-index: 600;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}

.fs-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ══════════════════════════════════════════════
   FONT SIZE (data-font)
══════════════════════════════════════════════ */
[data-font="chica"] .fs-card-en {
    font-size: 1rem;
}

[data-font="chica"] .fs-card-es {
    font-size: 0.875rem;
}

[data-font="mediana"] .fs-card-en {
    font-size: 1.125rem;
}

[data-font="mediana"] .fs-card-es {
    font-size: 1rem;
}

[data-font="grande"] .fs-card-en {
    font-size: 1.3125rem;
}

[data-font="grande"] .fs-card-es {
    font-size: 1.125rem;
}

/* ══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════ */
@media (max-width: 900px) {

    /* Selector */
    .fs-selector {
        padding: 28px 16px 48px;
    }

    .fs-selector-header h1 {
        font-size: 1.5rem;
    }

    .fs-areas-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    /* Layout */
    .fs-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .fs-sidebar {
        position: static;
        height: auto;
        max-height: 260px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .fs-cat-list {
        max-height: 160px;
    }
    .fs-sheet-cat-list {
        max-height: none !important;
        height: 100% !important;
    }

    .fs-main {
        padding: 16px;
        gap: 14px;
    }

    .fs-cat-name {
        font-size: 1.375rem;
    }
}

@media (max-width: 780px) {
    .fs-nav-right {
        gap: 6px;
    }

    #navFreeLabel {
        display: none;
    }

    .nav-plan-free {
        gap: 5px;
        padding: 4px 9px;
    }

    .font-switcher {
        gap: 1px;
    }

    .font-switcher button {
        padding: 2px 6px;
        font-size: 0.6875rem;
    }
}

@media (max-width: 600px) {

    /* Nav */
    .fs-breadcrumb {
        display: none;
    }

    .fs-user-chip span {
        display: none;
    }

    .fs-nav-plan {
        display: none;
    }

    .fs-logo-text {
        display: none;
    }

    .fs-nav-right {
        gap: 4px;
    }

    .fs-nav-inner {
        padding: 0 12px;
    }

    .font-switcher {
        gap: 1px;
    }

    .font-switcher button {
        padding: 2px 5px;
        font-size: 0.6875rem;
    }

    /* Fix 1 — Título categoría: una sola línea */
    .fs-content-header {
        overflow: hidden;
    }

    .fs-content-title-block {
        overflow: hidden;
        min-width: 0;
        max-width: 100%;
    }

    .fs-cat-name {
        font-size: 1.125rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
        max-width: 100%;
    }

    .fs-cat-desc {
        display: none;
    }

    /* Fix 2 — Fila audio centrada, Desde incluido */
    .fs-controls-audio {
        flex-direction: column;
        align-items: center;
    }

    .fs-audio-group {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .fs-mode-group {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }

    /* Fix 3 — Carta scrolleable y chingona */
    .fs-main-card {
        padding: 16px;
        max-height: 52vh;
        overflow-y: auto;
        scrollbar-width: thin;
        scrollbar-color: var(--border) transparent;
        -webkit-overflow-scrolling: touch;
    }

    .fs-main-card::-webkit-scrollbar {
        width: 4px;
    }

    .fs-main-card::-webkit-scrollbar-thumb {
        background: var(--border);
        border-radius: 4px;
    }

    .fs-card-en {
        font-size: 1.0625rem !important;
        line-height: 1.5;
    }

    .fs-card-es {
        font-size: 0.9375rem !important;
    }

    /* Fade inferior para indicar que hay más contenido */
    .fs-card-stack::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 28px;
        background: linear-gradient(to top, var(--bg-dark), transparent);
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        pointer-events: none;
        z-index: 3;
    }

    /* Card meta oculta */
    .fs-card-meta {
        display: none;
    }

    /* Selector */
    .fs-selector {
        padding: 20px 12px 36px;
    }

    .fs-selector-header h1 {
        font-size: 1.25rem;
    }

    .fs-areas-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .fs-area-card {
        padding: 14px 12px;
    }

    .fs-area-emoji-big {
        font-size: 1.375rem;
    }

    .fs-area-label {
        font-size: 0.8125rem;
    }

    .fs-area-desc {
        display: none;
    }

    /* Controls */
    .fs-controls-panel {
        padding: 12px 14px;
    }

    /* Nav btns */
    .fs-nav-btns {
        gap: 6px;
        flex-wrap: wrap;
    }

    #btnPrev {
        flex: 1;
        order: 1;
    }

    #btnNext {
        flex: 2;
        order: 2;
    }

    #btnAutoCon {
        flex: 1;
        order: 3;
        font-size: 0.725rem;
        padding: 9px 8px;
    }

    #btnPause {
        flex: 0;
        order: 4;
    }

    #btnReset {
        order: 5;
    }

    #btnAudio {
        order: 6;
    }

    .fs-btn-nav {
        padding: 9px 10px;
        font-size: 0.775rem;
    }

    /* Stat pills */
    .fs-stat-pills {
        gap: 5px;
    }

    .fs-stat-pill {
        font-size: 0.6875rem;
        padding: 3px 9px;
    }
}

@media (max-width: 380px) {
    .fs-logo {
        font-size: 0.8125rem;
    }

    .fs-areas-grid {
        grid-template-columns: 1fr;
    }
}

/* ═══════════════════════════════════════════
   PATRÓN MÓVIL — FAB + BOTTOM SHEET + NAV 2 FILAS
═══════════════════════════════════════════ */

/* FAB */
.fs-fab {
    display: none;
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 900;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 14px 28px;
    font-size: 1.1rem;
    box-shadow: 0 6px 24px rgba(0,0,0,0.4);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}
.fs-fab:active { transform: translateX(-50%) scale(0.95); }
.fs-fab-badge { display: none; }

/* Backdrop */
.fs-sheet-backdrop {
    position: fixed;
    top: 0; left: 0 !important; right: 0 !important;
    width: 100vw !important;
    height: 100vh;
    background: rgba(0,0,0,0.7);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    margin: 0 !important;
}
.fs-sheet-backdrop.open {
    opacity: 1;
    pointer-events: all;
}

/* Bottom Sheet */
.fs-bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    margin: 0 !important;
    z-index: 1001;
    background: var(--bg-card, #1a2332);
    border-radius: 20px 20px 0 0;
    height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(100%);
    transition: transform 0.32s cubic-bezier(0.4,0,0.2,1);
    box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
}
.fs-bottom-sheet.open { transform: translateY(0); }
.fs-sheet-handle {
    width: 40px; height: 4px;
    background: var(--border);
    border-radius: 4px;
    margin: 12px auto 0;
    flex-shrink: 0;
}
.fs-sheet-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 18px 8px;
    flex-shrink: 0;
}
.fs-sheet-title {
    font-size: 0.875rem; font-weight: 700;
    color: var(--text-primary);
}
.fs-sheet-close {
    background: none; border: none;
    color: var(--text-muted); font-size: 1rem;
    cursor: pointer; padding: 4px 8px;
}
.fs-sheet-search {
    display: flex; align-items: center; gap: 8px;
    margin: 0 16px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 12px;
    flex-shrink: 0;
}
.fs-sheet-search i { color: var(--text-muted); font-size: 0.75rem; }
.fs-sheet-search input {
    background: none; border: none; outline: none;
    color: var(--text-primary); font-size: 0.8rem;
    flex: 1;
}
.fs-sheet-cat-list {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    padding: 0 0 48px;
}

/* Botón fa-list en header (oculto en desktop) */
.fs-list-btn {
    display: none;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    padding: 8px 12px;
    font-size: 0.875rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: var(--transition);
}
.fs-list-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ═══════════════════════════════════════════
   RESPONSIVE ≤900px  — ocultar sidebar, mostrar FAB
═══════════════════════════════════════════ */
@media (max-width: 900px) {
    .fs-sidebar { display: none !important; }
    .fs-layout  { grid-template-columns: 1fr !important; }
    .fs-fab     { display: flex !important; align-items: center; gap: 8px; }
    .fs-list-btn { display: flex !important; align-items: center; gap: 6px; }
}

/* ═══════════════════════════════════════════
   RESPONSIVE ≤600px — Nav 2 filas
═══════════════════════════════════════════ */
@media (max-width: 600px) {
    .fs-nav-inner {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0 !important;
        padding: 8px 12px !important;
    }
    .fs-nav-left {
        justify-content: center;
        padding-bottom: 6px;
    }
    .fs-breadcrumb { display: none !important; }
    .fs-nav-right {
        justify-content: center;
        gap: 8px;
        padding-top: 6px;
        border-top: 1px solid var(--border);
    }
    .font-switcher  { display: none !important; }
    .fs-nav-plan    { display: none !important; }
    #navUser        { display: none !important; }

    /* Selector de áreas responsivo */
    .fs-industries-grid { grid-template-columns: 1fr !important; }

    /* Card más compacta */
    .fs-main-card { padding: 16px 14px; }
    .fs-card-en   { font-size: 1rem; }
}