/* ============================================================
   Símbolos — estilos exclusivos del recurso
   ============================================================ */

.sym-wrap {
    max-width: 1160px;
    margin: 0 auto clamp(3rem, 8vw, 5rem);
}

.sym-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    max-width: 640px;
    margin: 0 auto clamp(1.5rem, 4vw, 2.2rem);
}

.sym-search {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
}

.sym-search > .ti {
    position: absolute;
    left: 22px;
    color: var(--muted);
    pointer-events: none;
    font-size: 22px;
    transition: color var(--transition);
}

.sym-search input {
    width: 100%;
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: 22px;
    padding: 0 20px 0 52px;
    height: 64px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    outline: none;
}

.sym-search input::placeholder { color: var(--muted); opacity: .8; }

.sym-search input:focus {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.sym-search:focus-within > .ti { color: var(--accent); }

.sym-config-btn {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    color: var(--muted);
    border: 1.5px solid var(--border);
    border-radius: 50%;
    font-size: 22px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.sym-config-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px) rotate(45deg);
    box-shadow: var(--shadow-md);
}

/* Dropdown de categorías */
.sym-dropdown {
    position: relative;
    max-width: 420px;
    margin: 0 auto clamp(1.5rem, 4vw, 2.2rem);
}

.sym-dropdown-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    color: var(--text);
    transition: all var(--transition);
}

.sym-dropdown-trigger:hover {
    background: var(--glass-strong);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sym-dropdown-trigger .tr-icon { color: var(--accent); font-size: 19px; }
.sym-dropdown-trigger .tr-text { flex: 1; text-align: left; font-weight: 600; font-size: 0.9rem; color: var(--text); }
.sym-dropdown-trigger .tr-count {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--muted);
    background: var(--glass-bg);
    border: 1px solid var(--border);
    padding: 3px 10px;
    border-radius: 999px;
}
.sym-dropdown-trigger .tr-chev { margin-left: auto; color: var(--muted); transition: transform .25s ease; }
.sym-dropdown.open .tr-chev { transform: rotate(180deg); }

.sym-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--glass-strong);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all .22s ease;
    z-index: 90;
    max-height: 380px;
    overflow-y: auto;
    padding: 6px;
}

.sym-dropdown.open .sym-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sym-dd-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 12px;
    cursor: pointer;
    transition: background .15s ease;
}

.sym-dd-item:hover { background: var(--accent-soft); }
.sym-dd-item.selected { background: var(--accent-soft); }
.sym-dd-item.selected .dd-text, .sym-dd-item.selected .dd-icon { color: var(--accent); }
.sym-dd-item .dd-icon { color: var(--muted); font-size: 17px; }
.sym-dd-item .dd-text { flex: 1; font-size: 0.85rem; font-weight: 600; color: var(--text); }
.sym-dd-item .dd-count { font-size: 0.72rem; font-weight: 700; color: var(--muted); }

/* Secciones (estilo acordeon de "Acerca de") */
.sym-section {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(1.3);
    -webkit-backdrop-filter: blur(12px) saturate(1.3);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 20px;
    margin-bottom: 20px;
    transition: opacity .3s ease, box-shadow var(--transition), border-color var(--transition);
}

/* Destello morado breve al contraer (se retira solo) */
.sym-section.sym-flash {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

/* Botones de mover seccion (en la barra de titulo) */
.sym-move {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: var(--surface-2);
    border: 1px solid transparent;
    color: var(--muted);
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
}

.sym-move:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.sym-move:active { transform: scale(.9); }

.sym-sec-head {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
    user-select: none;
}

.sym-sec-title {
    flex: 1;
    font-family: var(--font-display);
    font-weight: 400;
    font-synthesis: none;
    font-size: 1.45rem;
    color: var(--text);
}

.sym-toggle {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform .35s cubic-bezier(.32, .72, 0, 1);
}

/* Expandida = + girado (como el acordeon de Acerca de) */
.sym-section:not(.collapsed) .sym-toggle { transform: rotate(45deg); }

/* Cierre completo garantizado aunque no haya animacion en curso */
.sym-section.collapsed .sym-grid {
    max-height: 0;
    overflow: hidden;
}

.sym-grid.animating {
    overflow: hidden;
    transition: max-height .45s cubic-bezier(.32, .72, 0, 1);
}

/* Grid de tarjetas */
.sym-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 16px;
}

.sym-grid.size-large { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 16px; }
.sym-grid.size-medium { grid-template-columns: repeat(9, 1fr); gap: 9px; }
.sym-grid.size-small { grid-template-columns: repeat(auto-fill, minmax(60px, 1fr)); gap: 6px; }

/* ===== Barra de titulos: header en PC / topbar en movil ===== */
.sym-mtoc { display: none; }

.sym-mtoc-chip {
    flex-shrink: 0;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .2px;
    padding: 9px 15px;
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    font-family: inherit;
    transition: all .2s ease;
}

.sym-mtoc-chip:hover { color: var(--text); }

.sym-mtoc-chip.active {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

/* Marcador de insercion al arrastrar chips */
.sym-mtoc-ph {
    flex-shrink: 0;
    width: 2px;
    min-width: 2px;
    height: 28px;
    border-radius: 2px;
    background: var(--accent);
    margin: 0 2px;
}

@media (max-width: 900px) {
    .sym-mtoc {
        display: flex;
        position: fixed;
        top: 14px;
        left: 78px;
        right: 14px;
        z-index: 2399;
        align-items: center;
        gap: 7px;
        height: 52px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        pointer-events: auto;
        padding: 8px 12px;
        background: var(--glass-strong);
        backdrop-filter: blur(18px) saturate(1.4);
        -webkit-backdrop-filter: blur(18px) saturate(1.4);
        border: 1px solid var(--border);
        border-radius: 999px;
        box-shadow: var(--shadow-sm);
    }
    .sym-mtoc::-webkit-scrollbar { display: none; }
}

/* En PC flota pegada debajo de la barra principal (mismo ancho, centrada) */
@media (min-width: 901px) {
    .sym-mtoc {
        display: flex;
        position: fixed;
        z-index: 2401;
        align-items: center;
        gap: 8px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 7px 10px;
        background: var(--glass-strong);
        backdrop-filter: blur(18px) saturate(1.4);
        -webkit-backdrop-filter: blur(18px) saturate(1.4);
        border: 1px solid var(--border);
        border-radius: 999px;
        box-shadow: var(--shadow-sm);
    }
    .sym-mtoc::-webkit-scrollbar { display: none; }
}

@media (max-width: 640px) {
    .sym-grid.size-medium { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 480px) {
    .sym-grid.size-large { grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); gap: 8px; }
}

.sym-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border: 1px solid var(--border);
    box-shadow: none;
    border-radius: 16px;
    padding: 22px 8px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    transition: transform .2s cubic-bezier(.25, .8, .25, 1), border-color var(--transition), box-shadow var(--transition);
}

.sym-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.sym-symbol {
    font-family: 'Times New Roman', serif;
    font-size: 34px;
    line-height: 1.15;
    margin-bottom: 7px;
    word-break: break-all;
}

.sym-name {
    font-size: 0.62rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--muted);
    transition: color .2s;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.size-medium .sym-card { padding: 13px 5px; border-radius: 13px; }
.size-medium .sym-symbol { font-size: 23px; margin-bottom: 3px; }
.size-medium .sym-name { font-size: 0.56rem; }

.size-small .sym-card { padding: 7px 3px; border-radius: 10px; }
.size-small .sym-symbol { font-size: 15px; margin-bottom: 1px; }
.size-small .sym-name { font-size: 0.44rem; letter-spacing: .3px; }

/* (el feedback textual se quito: queda el toast unificado) */

.sym-hidden { display: none !important; }

/* Tooltip: fija en <body>, posicionada por JS; estetica glass del sitio */
.sym-tip {
    position: fixed;
    left: -9999px;
    top: -9999px;
    width: 210px;
    max-width: calc(100vw - 16px);
    background: var(--glass-strong);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border: 1px solid var(--border);
    color: var(--text);
    text-align: left;
    border-radius: 14px;
    padding: 12px 15px;
    z-index: 1500;
    box-shadow: var(--shadow-lg);
    pointer-events: none;
    font-size: .74rem;
    line-height: 1.55;
    opacity: 0;
    visibility: hidden;
    transition: opacity .18s ease;
}

.sym-tip.pinned { visibility: visible; opacity: 1; }

.sym-tip-title {
    font-weight: 700;
    font-size: .8rem;
    color: var(--accent);
    margin-bottom: 6px;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border);
}

.sym-tip-latex {
    display: inline-block;
    margin-top: 9px;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: .66rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 3px 10px;
    border-radius: 999px;
}

/* Barra portapapeles */
.sym-clipboard {
    max-width: 640px;
    margin: 0 auto clamp(1.5rem, 4vw, 2.2rem);
    background: var(--glass-strong);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border: 1px solid var(--accent);
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    min-height: 54px;
    box-shadow: var(--shadow-md);
}

.sym-clp-items {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px;
    font-family: 'Times New Roman', serif;
    font-size: 21px;
    color: var(--text);
    overflow: hidden;
    margin-right: 14px;
}

.sym-clp-item {
    padding: 0 3px;
    border-radius: 4px;
    cursor: default;
}

.sym-clipboard > button {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--muted);
    padding: 7px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 18px;
    transition: all .2s ease;
}

.sym-clipboard > button:hover {
    color: var(--text);
    background: var(--accent-soft);
    transform: scale(1.1);
}

.sym-clipboard > button.sym-clp-copy { color: var(--accent); }
.sym-clipboard > button.sym-clp-copy:hover { background: var(--accent); color: var(--accent-text-on); }

/* Favoritos */
.sym-fav-add {
    border: 2px dashed var(--border) !important;
    box-shadow: none !important;
    opacity: .65;
    background: transparent !important;
}

.sym-fav-add:hover { opacity: 1; transform: scale(1.05); box-shadow: none !important; }
.sym-fav-add:hover .sym-name { color: var(--accent); }

.sym-fav-add .fav-ico { font-size: 24px; margin-bottom: 6px; color: var(--muted); transition: all .25s ease; }
.sym-fav-add:hover .fav-ico { color: var(--accent); transform: scale(1.1); }

body.sym-picking .sym-card:not(.sym-fav-add):not(.sym-fav-card) { outline: 2px dashed var(--accent); }
body.sym-picking .sym-fav-add { border-style: solid !important; border-color: var(--accent); opacity: 1; }

/* Toast: estilos unificados en css/styles.css (.toast-copiado) */

/* Modal de configuración (usa .modal-overlay/.modal globales) */
.cfg-section { margin-bottom: 22px; }
.cfg-section:last-child { margin-bottom: 0; }

.cfg-sizes { display: flex; gap: 8px; }

.cfg-size-btn {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: transparent;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 700;
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
}

.cfg-size-btn:hover { border-color: var(--accent); color: var(--accent); }

.cfg-size-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-text-on);
}

.cfg-checks {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.cfg-check {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 9px 16px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--glass-bg);
    transition: all var(--transition);
}

.cfg-check:hover { border-color: var(--accent); }

.cfg-check input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }
.cfg-check span { font-size: .84rem; font-weight: 600; color: var(--text); }

@media (max-width: 640px) {
    .sym-controls { gap: 10px; }
    .sym-search { min-width: 0; flex: 1; }
    .sym-search input {
        height: 56px;
        border-radius: 19px;
        padding-left: 48px;
        font-size: .95rem;
    }
    .sym-search > .ti { left: 18px; font-size: 20px; }
    .sym-config-btn { width: 56px; height: 56px; font-size: 20px; }

    .sym-wrap { margin-bottom: clamp(2rem, 6vw, 3rem); }

    .sym-section {
        padding: 14px 12px;
        margin-bottom: 14px;
    }
    .sym-sec-head { padding-bottom: 10px; margin-bottom: 12px; gap: 8px; }
    .sym-sec-title { font-size: 1.15rem; }
    .sym-toggle { font-size: 16px; }
    .sym-grid { gap: 8px; }
    .size-medium .sym-card { padding: 10px 3px; }
    .size-small .sym-card { padding: 6px 2px; }

    /* En movil: tooltip al mantener presionado, posicionada con JS
       para que nunca se corte con los bordes de la pantalla */
    .sym-clp-items { font-size: 18px; }
    .sym-dropdown-menu { max-height: 300px; }
}

@media (max-width: 900px) {
    .content { padding-left: 12px; padding-right: 12px; }
}