:root {
    --azul-corporativo: #0f172a;
    --celeste-sv: #0ea5e9;
    --bg-light: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
    --glass-blur: blur(8px);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 220px;
    /* Peak Performance: Hardware Acceleration */
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-light);
    min-height: 100vh;
    margin: 0;
    color: var(--azul-corporativo);
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background-color: #f0f4f8;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(14, 165, 233, 0.15), transparent 45%),
        radial-gradient(circle at 90% 10%, rgba(99, 102, 241, 0.12), transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(56, 189, 248, 0.15), transparent 50%),
        radial-gradient(circle at 80% 90%, rgba(244, 63, 94, 0.08), transparent 45%);
    pointer-events: none;
    transform: translate3d(0, 0, 0);
    will-change: transform;
}

/* --- GLASSMORPHISM & MINIMALISMO CORPORATIVO --- */
/* --- GLASSMORPHISM & MODALES --- */
#custom-modal>div,
#project-modal>div,
#auth-modal>div,
#profile-modal>div,
#import-edc-modal>div {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow) !important;
    transform: translate3d(0, 0, 0);
}

/* Excepciones de Glassmorphism (no doble blur) */
.bg-white table th,
.bg-white table td,
#books-stack.is-grid-view .glass-card {
    backdrop-filter: none !important;
}

/* Tablas: Cabeceras premium */
thead.bg-white,
thead.bg-slate-50,
.sticky.top-0.bg-white {
    background: rgba(255, 255, 255, 0.6) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-bottom: 1px solid rgba(15, 23, 42, 0.05) !important;
}

/* Panel Maestro Backend / Administrador Opaco Glass */
.bg-slate-900.rounded-\[28px\],
.bg-slate-900.shadow-2xl {
    background: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid rgba(255, 255, 255, 0.187) !important;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4) !important;
    transform: translate3d(0, 0, 0);
}

/* Cards interactivos premium - 120 FPS Optimized */
.glass-card,
.project-card {
    margin-bottom: 24px;
    position: relative;
    border-radius: 36px !important;
    /* Optimizado: Fondo más opaco para evitar backdrop-filter costoso en listas */
    background: rgba(248, 250, 252, 0.8) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    box-shadow:
        -8px -8px 24px rgba(255, 255, 255, 0.7),
        8px 12px 24px rgba(0, 0, 0, 0.06),
        inset 0 0 0 1px rgba(255, 255, 255, 0.6) !important;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease !important;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    isolation: isolate;
    border: none !important;
    content-visibility: auto;
    contain-intrinsic-size: 1px 500px;
    contain: paint;
    transform: translateZ(0);
}

/* Shadow Bloom (Sombra con color sutil para herramientas) */
.btn-bloom-emerald {
    box-shadow: 0 8px 20px -4px rgba(16, 185, 129, 0.4) !important;
}

.btn-bloom-slate {
    box-shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.3) !important;
}

.btn-bloom-rose {
    box-shadow: 0 8px 20px -4px rgba(244, 63, 94, 0.4) !important;
}

.btn-bloom-orange {
    box-shadow: 0 8px 20px -4px rgba(245, 158, 11, 0.4) !important;
}

.btn-bloom-indigo {
    box-shadow: 0 8px 20px -4px rgba(79, 70, 229, 0.4) !important;
}


/* --- SYNC & CLOSE BUTTON ENHANCEMENTS (V2 - REAL-TIME) --- */
.sync-indicator-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: nowrap;
}

#save-indicator.synced, #save-indicator-mobile.synced {
    background: #ecfdf5 !important; /* Emerald-50 */
    color: #059669 !important; /* Emerald-600 */
    border-color: #d1fae5 !important;
}

#cloud-indicator.synced, #cloud-indicator-mobile.synced {
    background: #f0f9ff !important; /* Sky-50 */
    color: #0ea5e9 !important; /* Sky-500 */
    border-color: #e0f2fe !important;
}

#cloud-indicator.error, #cloud-indicator-mobile.error {
    background: #fef2f2 !important; /* Rose-50 */
    color: #e11d48 !important; /* Rose-600 */
    border-color: #fee2e2 !important;
}

.sync-status-label {
    font-size: 8.5px;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #475569; /* Slate-600 */
}

/* Botón Circular Rojo Estilo Imagen */
#close-button {
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border: none !important;
}

#close-button:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 24px -6px rgba(244, 63, 94, 0.5) !important;
}

#close-button:active {
    transform: scale(0.95);
}

/* Animación de Sincronización */
@keyframes sync-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.sync-spin {
    animation: sync-spin 1.2s linear infinite;
    display: inline-block;
}

.syncing-pulse {
    animation: syncing-pulse 1.5s ease-in-out infinite;
}

@keyframes syncing-pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.98); }
    100% { opacity: 1; transform: scale(1); }
}

#home-screen,
#app-screen,
#master-screen {
    contain: paint;
    transform: translateZ(0);
    backface-visibility: hidden;
}


.glow-hover:hover.btn-bloom-emerald {
    box-shadow: 0 12px 28px -4px rgba(16, 185, 129, 0.55) !important;
}

.glow-hover:hover.btn-bloom-slate {
    box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.5) !important;
}

.glow-hover:hover.btn-bloom-rose {
    box-shadow: 0 12px 28px -4px rgba(244, 63, 94, 0.55) !important;
}

.glow-hover:hover.btn-bloom-orange {
    box-shadow: 0 12px 28px -4px rgba(245, 158, 11, 0.55) !important;
}

.glow-hover:hover.btn-bloom-indigo {
    box-shadow: 0 12px 28px -4px rgba(79, 70, 229, 0.55) !important;
}

/* Expansión Dinámica de la Viñeta (Pop-up Overlay) */
.project-pill-expanded {
    position: absolute !important;
    top: 0;
    left: 0;
    width: 100% !important;
    max-width: 340px !important;
    height: auto !important;
    padding: 1.5rem !important;
    border-radius: 36px !important; /* Estándar universal */
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05) !important;
    z-index: 2000 !important;
    flex-direction: column !important;
    align-items: flex-start !important;
}

/* Contenedor estático para que el header no se mueva */
.project-pill-wrapper {
    width: 200px;
    /* Ancho base */
    min-height: 56px;
    height: auto;
    position: relative;
    flex-shrink: 0;
    z-index: 50;
}

.pill-options-panel {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-pill-expanded .pill-options-panel {
    max-height: 600px;
    opacity: 1;
    margin-top: 0.75rem;
}

/* Simetría: Altura uniforme para todas las cápsulas del header */
.glass-pill,
#main-project-pill {
    min-height: 56px;
    /* Se cambia height fijo a min-height para evitar recortes en móvil */
    display: flex;
    align-items: center;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
    transform: translate3d(0, 0, 0);
}

#main-project-pill.project-pill-expanded {
    padding-top: 1rem !important;
}

.pill-select-mini {
    width: 100%;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 36px;
    font-size: 10px;
    font-weight: 800;
    color: #334155;
    padding: 8px 12px;
    margin-bottom: 8px;
    appearance: none;
    cursor: pointer;
    transition: all 0.2s;
}

.pill-select-mini:focus {
    border-color: #38bdf8;
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

/* will-change solo activo al hacer hover — evita N capas GPU simultáneas */
.glass-card:hover,
.project-card:hover {
    will-change: transform;
    transform: translate3d(0, -5px, 0) !important;
    box-shadow:
        -12px -12px 28px rgba(255, 255, 255, 0.5),
        12px 12px 28px rgba(15, 23, 42, 0.1),
        inset 1px 1px 0px rgba(255, 255, 255, 0.6) !important;
}

#main-project-pill:hover {
    transform: none !important;
}

.glass-card.active-sheet {
    box-shadow:
        0 0 0 2px rgba(14, 165, 233, 0.3),
        -10px -10px 20px rgba(255, 255, 255, 0.92),
        10px 10px 20px rgba(15, 23, 42, 0.05) !important;
}

/* --- MODALES GLASSMORPHISM --- */
.glass-modal {
    cursor: default;
    margin-bottom: 0;
    padding: 40px;
    border-radius: 36px !important;
    background: rgba(255, 255, 255, 0.88) !important;
    backdrop-filter: blur(30px) !important;
    -webkit-backdrop-filter: blur(30px) !important;
    box-shadow:
        -10px -10px 30px rgba(255, 255, 255, 0.9),
        10px 20px 40px rgba(0, 0, 0, 0.05),
        inset 0 0 0 1px rgba(255, 255, 255, 0.5) !important;
    border: none !important;
}


/* === BORDE ANIMADO & AURA SYMMETRIC === */
@keyframes aura-pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.35;
    }

    50% {
        transform: scale(1.18);
        opacity: 0.1;
    }
}

.sync-aura {
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    background: rgba(14, 165, 233, 0.45);
    z-index: -1;
    animation: aura-pulse 3s infinite ease-in-out;
    pointer-events: none;
}

.sync-aura-2 {
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    background: rgba(14, 165, 233, 0.45);
    z-index: -1;
    animation: aura-pulse 3s infinite ease-in-out 1.5s;
    pointer-events: none;
}

@property --border-angle {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
}

/* === BORDE ANIMADO (sweep cónico — solo borde, sin aura exterior) === */
.glass-pill::before,
.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: conic-gradient(from var(--border-angle),
            transparent 0%,
            rgba(14, 165, 233, 1) 10%,
            transparent 25%,
            transparent 50%,
            rgba(14, 165, 233, 1) 60%,
            transparent 75%,
            transparent 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

/* Animación solo cuando está expandido */
#main-project-pill.project-pill-expanded::before {
    opacity: 1;
    animation: spinBorderAI 2s linear infinite;
}

@keyframes spinBorderAI {
    to {
        --border-angle: 360deg;
    }
}

/* Clase activadora dinámica — solo muestra el sweep del borde */
.border-active {
    box-shadow:
        -12px -12px 24px rgba(255, 255, 255, 0.95),
        12px 12px 24px rgba(15, 23, 42, 0.04) !important;
    transition: box-shadow 0.4s ease !important;
}

.glass-pill.border-active::before,
.project-card.border-active::before {
    opacity: 1;
    animation: spinBorderAI 2s linear infinite;
}



/* Clase compartida para viñetas y toolbars (mantiene efecto glass) */
.glass-pill {
    position: relative;
    background: rgba(255, 255, 255, 0.45) !important;
    backdrop-filter: blur(24px) !important;
    -webkit-backdrop-filter: blur(24px) !important;
    box-shadow:
        -8px -8px 24px rgba(255, 255, 255, 0.45),
        8px 8px 24px rgba(15, 23, 42, 0.12),
        inset 1px 1px 2px rgba(255, 255, 255, 0.5) !important;
    border: 1px solid rgba(255, 255, 255, 0.5) !important;
    border-radius: 36px !important; /* Estándar Universal EduConta */
    isolation: isolate;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* --- GLOW COLOREADO EFECTO (Eliminado por fuga de sombra) --- */
.glow-hover {
    position: relative;
    z-index: 1;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease;
}

.glow-hover:hover {
    transform: translate3d(0, -4px, 0);
}

.glow-hover::before {
    display: none !important;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 1.25rem;
    background: rgba(255, 255, 255, 0.6) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.4) !important;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    transform: translateZ(0);
}

@media (min-width: 768px) {
    .main-header {
        padding: 0 2.5rem;
        height: 85px;
    }
}

.input-minimal {
    background: rgba(255, 255, 255, 0.5);
    border: none;
    border-radius: 36px;
    box-shadow: inset 2px 2px 5px rgba(15, 23, 42, 0.05), inset -2px -2px 5px rgba(255, 255, 255, 0.8);
    width: 100%;
    padding: 10px 14px;
    outline: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    color: #1e293b;
}

.input-minimal:focus,
#auth-modal input:focus,
#proj-input-name:focus {
    box-shadow:
        inset 2px 2px 5px rgba(15, 23, 42, 0.02),
        inset -2px -2px 5px rgba(255, 255, 255, 0.5),
        0 0 0 2px var(--celeste-sv);
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
}

/* Estilo general para inputs simulando neomorfismo */
input[type="text"],
input[type="email"],
input[type="password"] {
    background: rgba(255, 255, 255, 0.6) !important;
    border: none !important;
    box-shadow: inset 3px 3px 8px rgba(15, 23, 42, 0.12), inset -3px -3px 8px rgba(255, 255, 255, 0.5) !important;
    border-radius: 36px !important;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.input-minimal:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    background: rgba(241, 245, 249, 0.5);
    box-shadow: none;
}

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.suggestions-panel {
    position: absolute;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    max-height: 280px;
    overflow-y: auto;
    z-index: 10000;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
    padding: 6px;
    scroll-behavior: smooth;
}

.suggestion-item {
    padding: 10px 12px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    border-radius: 8px;
    transition: all 0.1s;
    border-bottom: 1px solid #f1f5f9;
}

.suggestion-item.highlighted {
    background: #f0f9ff;
    border-left: 4px solid var(--celeste-sv);
}

.cat-tag {
    font-size: 8px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 4px;
    display: inline-block;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.tag-gub {
    background: rgba(254, 226, 226, 0.5);
    color: #991b1b;
    border: 1px solid rgba(248, 113, 113, 0.3);
}

.tag-agr {
    background: rgba(220, 252, 231, 0.5);
    color: #166534;
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.tag-inv {
    background: rgba(241, 245, 249, 0.5);
    color: #334155;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.tag-ssf {
    background: rgba(224, 242, 254, 0.5);
    color: #075985;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.unbalanced {
    background-color: rgba(254, 226, 226, 0.6);
    color: #991b1b;
    border: 1px solid rgba(248, 113, 113, 0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.balanced {
    background-color: rgba(220, 252, 231, 0.6);
    color: #166534;
    border: 1px solid rgba(74, 222, 128, 0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.frozen-badge {
    position: absolute;
    top: 20px;
    right: -10px;
    background: #0f172a;
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 10;
}

#custom-modal,
#project-modal,
#auth-modal,
#profile-modal,
#import-edc-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.35);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: fadeInBackdrop 0.3s ease-out forwards;
}

#import-edc-modal {
    z-index: 10000; /* Encima de todos */
}

#custom-modal>div,
#project-modal>div,
#auth-modal>div,
#profile-modal>div,
#import-edc-modal>div {
    animation: modalPopIn 0.42s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    transform: translateZ(0);
    will-change: transform, opacity;
    margin: 0 1.5rem;
}

/* Estado de salida para modales */
#custom-modal.closing>div,
#project-modal.closing>div,
#auth-modal.closing>div,
#profile-modal.closing>div,
#import-edc-modal.closing>div {
    animation: modalPopOut 0.3s cubic-bezier(0.4, 0, 1, 1) forwards;
}

#custom-modal.closing,
#project-modal.closing,
#auth-modal.closing,
#profile-modal.closing,
#import-edc-modal.closing {
    animation: fadeOutBackdrop 0.3s ease-in forwards;
}

/* Tamaño aumentado para el modal de importación */
.import-modal-box {
    max-width: 650px !important;
}

@keyframes fadeInBackdrop {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
    }

    to {
        opacity: 1;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }
}

@keyframes modalPopIn {
    from {
        opacity: 0;
        transform: scale(0.88) translateY(20px) translateZ(0);
    }

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

@keyframes modalPopOut {
    0% {
        opacity: 1;
        transform: scale(1) translateY(0) translateZ(0);
    }

    /* Pequeño impulsito antes de salir */
    20% {
        opacity: 1;
        transform: scale(1.02) translateY(-5px) translateZ(0);
    }

    100% {
        opacity: 0;
        transform: scale(0.9) translateY(20px) translateZ(0);
    }
}

@keyframes fadeOutBackdrop {
    from {
        opacity: 1;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    to {
        opacity: 0;
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
    }
}

.tool-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 999px !important;
    font-weight: 700;
    font-size: 10px;
    text-transform: uppercase;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.4) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border: 1px solid rgba(255, 255, 255, 0.5) !important;
    box-shadow:
        -4px -4px 12px rgba(255, 255, 255, 0.4),
        4px 4px 12px rgba(15, 23, 42, 0.1);
    color: #475569;
    outline: none !important;
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow:
        -6px -6px 16px rgba(255, 255, 255, 0.45),
        6px 6px 16px rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.9);
}

.tool-btn:active {
    transform: translateY(1px);
    box-shadow:
        inset 3px 3px 6px rgba(15, 23, 42, 0.05),
        inset -3px -3px 6px rgba(255, 255, 255, 0.8);
}

.tool-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
    background: transparent;
}

.project-card {
    background: var(--glass-bg) !important;
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    padding: 24px;
    /* Eliminamos transition: all para prevenir shift cromático inicial */
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    transform: translateZ(0);
    /* Hardware accelerated */
    will-change: transform, box-shadow;
}

.project-card:hover {
    transform: translateZ(0) translateY(-4px);
    border-color: var(--celeste-sv);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.1);
}

.dropdown-menu {
    position: absolute;
    top: 45px;
    right: 10px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 100;
    display: none;
    min-width: 150px;
}

.dropdown-item {
    padding: 10px 16px;
    font-size: 11px;
    font-weight: 700;
    color: #64748b;
    text-transform: cursor pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-item:hover {
    background: #f8fafc;
    color: var(--azul-corporativo);
}

.btn-remove-row:disabled {
    display: none;
}


/* ESTILOS DE VISTA DE CUADRÍCULA (GRID VIEW) */
#books-stack.is-grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    align-items: start;
    justify-content: center;
}

@media (min-width: 768px) {
    #books-stack.is-grid-view {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 24px;
    }
}

#books-stack.is-grid-view .glass-card {
    margin-bottom: 0;
    padding: 24px !important;
    height: 380px;
    overflow: hidden;
    border: 2px solid #e2e8f0;
    cursor: zoom-in;
    position: relative;
    transform: translate3d(0, 0, 0);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
    will-change: transform, opacity;
}

#books-stack.is-grid-view .glass-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to bottom, transparent, white 90%);
    pointer-events: none;
}

#books-stack.is-grid-view .glass-card:hover {
    border-color: var(--celeste-sv);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(56, 189, 248, 0.15);
}

#books-stack.is-grid-view .glass-card * {
    pointer-events: none !important;
}

#books-stack.is-grid-view .sheet-title {
    font-size: 1.25rem;
}

#books-stack.is-grid-view table th,
#books-stack.is-grid-view table td {
    padding: 6px 4px;
    font-size: 0.7rem;
}

#books-stack.is-grid-view input {
    font-size: 0.7rem;
}

/* ANIMACIONES PERFECCIONADAS */
@keyframes popIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }

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

.animate-pop-in {
    animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes expandFromCenter {
    0% {
        transform: scale(0.4);
        opacity: 0;
    }

    60% {
        transform: scale(1.02);
        opacity: 1;
        border-color: var(--celeste-sv);
        box-shadow: 0 20px 40px rgba(56, 189, 248, 0.2);
    }

    100% {
        transform: scale(1);
        opacity: 1;
        border-color: transparent;
    }
}

.expand-from-center-effect {
    animation: expandFromCenter 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards !important;
    z-index: 100;
    position: relative;
    transform-origin: center center;
    pointer-events: none !important; /* Inmunidad al hover durante el pop-up */
}

/* Inmunidad global al contenedor al cambiar de vista */
.animating-to-normal {
    pointer-events: none !important;
}


@keyframes compressToGrid {
    0% {
        transform: scale(1.05);
        opacity: 0;
    }

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

.animating-to-grid .glass-card {
    animation: compressToGrid 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.disable-transitions,
.disable-transitions * {
    transition: none !important;
    animation: none !important;
}

#books-stack {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: transform;
}

/* --- OCULTAR BARRAS DE DESPLAZAMIENTO GLOBALES --- */
::-webkit-scrollbar {
    display: none;
    /* Safari, Chrome, Opera, navegadores móviles */
}

* {
    -ms-overflow-style: none;
    /* IE y Edge */
    scrollbar-width: none;
    /* Firefox */
}

/* Estilos Pestañas y Animación de Selección */
.tab-btn {
    transition: color 0.3s ease, background-color 0.3s ease;
    -webkit-tap-highlight-color: transparent !important;
    outline: none !important;
    border: none !important;
    box-shadow: none !important;
}

.fade-in {
    animation: fadeIn 0.4s ease-in-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.t-account-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #1e293b;
    transform: translateX(-50%);
}

/* --- ANIMACIÓN DEL LOGO --- */
.icon-svg {
    overflow: visible;
    flex-shrink: 0;
}

.bar {
    transform: scaleY(0);
    transform-origin: bottom;
    animation: growUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.2) forwards, idleBounce 0.8s ease-in-out 0.4s 2;
}

.bar-1 {
    animation-delay: 0.1s, 0.4s;
}

.bar-2 {
    animation-delay: 0.15s, 0.45s;
}

.bar-3 {
    animation-delay: 0.2s, 0.5s;
}

@keyframes growUp {
    to {
        transform: scaleY(1);
    }
}

@keyframes idleBounce {

    0%,
    100% {
        transform: scaleY(1);
    }

    50% {
        transform: scaleY(1.15);
    }
}

.base-line {
    transform: scaleX(0);
    transform-origin: center;
    animation: slideIn 0.2s ease-out forwards;
}

@keyframes slideIn {
    to {
        transform: scaleX(1);
    }
}

.text-svg {
    height: 20px;
    width: auto;
    overflow: visible;
    margin-left: -4px;
    transition: height 0.3s ease;
}

@media (min-width: 768px) {
    .text-svg {
        height: 28px;
    }
}

.char-stroke {
    fill: transparent;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    will-change: stroke-dashoffset, opacity;
    animation: drawStroke 0.4s ease-out forwards, fadeOutStroke 0.3s ease-in 0.6s forwards;
}

.char-fill {
    opacity: 0;
    fill: currentColor;
    filter: url(#softBlur);
    transform: translateY(2px);
    will-change: opacity, filter, transform;
    animation: fillEffect 0.5s ease-out forwards;
}

@keyframes drawStroke {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeOutStroke {
    to {
        opacity: 0;
    }
}

@keyframes fillEffect {
    0% {
        opacity: 0;
        filter: blur(8px);
        transform: translateY(2px);
    }

    100% {
        opacity: 1;
        filter: blur(0);
        transform: translateY(0);
    }
}

.d-e {
    animation-delay: 0.3s;
}

.d-e-f {
    animation-delay: 0.5s;
}

.d-d {
    animation-delay: 0.35s;
}

.d-d-f {
    animation-delay: 0.55s;
}

.d-u {
    animation-delay: 0.4s;
}

.d-u-f {
    animation-delay: 0.6s;
}

.d-c {
    animation-delay: 0.5s;
}

.d-c-f {
    animation-delay: 0.7s;
}

.d-o {
    animation-delay: 0.55s;
}

.d-o-f {
    animation-delay: 0.75s;
}

.d-n {
    animation-delay: 0.6s;
}

.d-n-f {
    animation-delay: 0.8s;
}

.d-t {
    animation-delay: 0.65s;
}

.d-t-f {
    animation-delay: 0.85s;
}

.d-a {
    animation-delay: 0.7s;
}

.d-a-f {
    animation-delay: 0.9s;
}

.d-s {
    animation-delay: 0.85s;
}

.d-s-f {
    animation-delay: 1.05s;
}

.d-v {
    animation-delay: 0.9s;
}

.d-v-f {
    animation-delay: 1.1s;
}

/* ADMIN MODE HEADER SYNC */
.main-header.admin-mode {
    background: rgba(15, 23, 42, 0.98) !important;
    border-bottom: 1px solid rgba(30, 41, 59, 1) !important;
    backdrop-filter: blur(20px) !important;
}

.main-header.admin-mode .text-svg .char-stroke,
.main-header.admin-mode .text-svg .char-fill {
    color: white !important;
    fill: white !important;
}

.main-header.admin-mode .base-line,
.main-header.admin-mode .bar {
    fill: white !important;
}

@media print {
    .no-print {
        display: none !important;
    }

    .glass-card {
        box-shadow: none !important;
        margin: 0 !important;
        border: none !important;
    }
}