/* ============================================================
 *  SISTEMA DE INVENTARIO — Estilos
 *  Creado por Alejandro Martel
 * ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800&display=swap');

:root {
    --bg-primary: #1a1a2e; /* Fondo muy oscuro basado en azul violáceo */
    --bg-secondary: #23233e;
    --bg-card: rgba(35, 35, 62, 0.7);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #F2F2F2;
    --text-secondary: #E6E6E6;
    --accent-blue: #3F5FA8;
    --accent-purple: #7A5AA6;
    --accent-emerald: #10b981;
    --accent-rose: #C94C8A;
    --accent-amber: #f59e0b;
    --accent-magenta: #A55393;
    /* Inicio azul oscuro, final magenta fuerte, priorizando magenta con más porcentaje */
    --gradient-main: linear-gradient(135deg, #3F5FA8 0%, #7A5AA6 25%, #A55393 50%, #C94C8A 100%);
    --gradient-success: linear-gradient(135deg, #10b981, #059669);
    --gradient-danger: linear-gradient(135deg, #C94C8A, #A55393);
    --gradient-warning: linear-gradient(135deg, #f59e0b, #d97706);
    --shadow-glow: 0 0 40px rgba(165, 83, 147, 0.25);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Montserrat', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-grid {
    position: fixed; inset: 0; z-index: 0;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(63, 95, 168, 0.12) 0%, transparent 50%), /* Azul oscuro */
        radial-gradient(circle at 80% 80%, rgba(201, 76, 138, 0.15) 0%, transparent 50%), /* Magenta fuerte */
        radial-gradient(circle at 50% 50%, rgba(165, 83, 147, 0.12) 0%, transparent 60%); /* Magenta suave */
    animation: bgPulse 8s ease-in-out infinite alternate;
}
@keyframes bgPulse { 0% { opacity: 0.6; } 100% { opacity: 1; } }
.bg-grid::after {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* ===== Login ===== */
.login-container {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; position: relative; z-index: 1;
}
.login-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: var(--radius);
    padding: 48px 40px; width: 100%; max-width: 420px;
    box-shadow: var(--shadow-glow);
}
.login-card h1 {
    font-size: 1.8rem; font-weight: 800; text-align: center; margin-bottom: 8px;
    background: var(--gradient-main); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.login-card p { text-align: center; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 32px; }
.login-card .icon-lock { text-align: center; font-size: 3rem; margin-bottom: 16px; }

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px;
}
.form-group input, .form-group select {
    width: 100%; padding: 14px 16px; background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass); border-radius: var(--radius-sm);
    color: var(--text-primary); font-family: 'Montserrat', sans-serif;
    font-size: 1rem; transition: var(--transition);
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}
.form-group select option { background: #1e293b; color: var(--text-primary); }

.error-msg {
    background: rgba(244, 63, 94, 0.1); border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--accent-rose); padding: 10px 14px; border-radius: var(--radius-sm);
    font-size: 0.85rem; margin-bottom: 16px; text-align: center;
}
.success-msg {
    background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent-emerald); padding: 10px 14px; border-radius: var(--radius-sm);
    font-size: 0.85rem; margin-bottom: 16px; text-align: center;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 28px; border: none; border-radius: var(--radius-sm);
    font-family: 'Montserrat', sans-serif; font-size: 0.9rem; font-weight: 700;
    cursor: pointer; transition: var(--transition); text-transform: uppercase;
    letter-spacing: 0.5px; position: relative; overflow: hidden;
}
.btn::after {
    content: ''; position: absolute; inset: 0;
    background: rgba(255, 255, 255, 0.1); opacity: 0; transition: opacity 0.3s ease;
}
.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--gradient-main); color: white; width: 100%; }
.btn-success { background: var(--gradient-success); color: white; }
.btn-danger { background: var(--gradient-danger); color: white; }
.btn-warning { background: var(--gradient-warning); color: white; }
.btn-small { padding: 8px 16px; font-size: 0.75rem; }
.btn-outline {
    background: transparent; border: 1px solid var(--border-glass);
    color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--accent-blue); color: var(--accent-blue); }

/* ===== Layout ===== */
.app-container { position: relative; z-index: 1; min-height: 100vh; display: none; }

.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; width: 260px;
    background: rgba(17, 24, 39, 0.9); backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-glass); padding: 24px 0;
    z-index: 50; transition: var(--transition); overflow-y: auto;
}
.sidebar-header {
    padding: 0 24px 24px; border-bottom: 1px solid var(--border-glass); margin-bottom: 16px;
}
.sidebar-header h1 {
    font-size: 1.2rem; font-weight: 800;
    background: var(--gradient-main); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.sidebar-header .user-info {
    font-size: 0.75rem; color: var(--text-secondary); margin-top: 8px;
}
.sidebar-header .user-role {
    display: inline-block; padding: 2px 8px; border-radius: 12px;
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
    margin-top: 4px;
}
.role-admin { background: rgba(139, 92, 246, 0.2); color: var(--accent-purple); }
.role-editor { background: rgba(59, 130, 246, 0.2); color: var(--accent-blue); }
.role-viewer { background: rgba(148, 163, 184, 0.2); color: var(--text-secondary); }

.nav-item {
    display: flex; align-items: center; gap: 12px; padding: 14px 24px;
    color: var(--text-secondary); font-size: 0.85rem; font-weight: 600;
    cursor: pointer; transition: var(--transition); border-left: 3px solid transparent;
}
.nav-item:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.nav-item.active {
    color: var(--accent-magenta); background: rgba(165, 83, 147, 0.08); /* Magenta background */
    border-left-color: var(--accent-magenta);
}
.nav-item .nav-icon { font-size: 1.1rem; width: 24px; text-align: center; }
.nav-divider { height: 1px; background: var(--border-glass); margin: 8px 24px; }

.main-content { margin-left: 260px; padding: 32px; }

.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 28px; flex-wrap: wrap; gap: 16px;
}
.page-header h2 {
    font-size: 1.5rem; font-weight: 800;
    background: var(--gradient-main); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.page-header .subtitle { font-size: 0.8rem; color: var(--text-secondary); margin-top: 4px; }

/* ===== Cards ===== */
.card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: var(--radius);
    padding: 28px; box-shadow: var(--shadow-glow); transition: var(--transition);
}
.card:hover { border-color: rgba(255, 255, 255, 0.12); }

/* ===== Dashboard Stats ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 28px; }
.stat-card { text-align: center; padding: 24px; }
.stat-value {
    font-size: 2.8rem; font-weight: 800;
    background: var(--gradient-main); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-value.warning { background: var(--gradient-warning); -webkit-background-clip: text; background-clip: text; }
.stat-value.danger { background: var(--gradient-danger); -webkit-background-clip: text; background-clip: text; }
.stat-label {
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 1.5px; color: var(--text-secondary); margin-top: 8px;
}
.stat-icon { font-size: 2rem; margin-bottom: 8px; }

/* ===== Tables ===== */
.table-wrapper { overflow-x: auto; margin-top: 16px; }
table {
    width: 100%; border-collapse: collapse;
    font-size: 0.85rem;
}
thead th {
    padding: 14px 16px; text-align: left;
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; color: var(--text-secondary);
    border-bottom: 1px solid var(--border-glass);
    white-space: nowrap;
}
tbody td {
    padding: 14px 16px; border-bottom: 1px solid rgba(255,255,255,0.03);
    vertical-align: middle;
}
tbody tr { transition: var(--transition); }
tbody tr:hover { background: rgba(255, 255, 255, 0.03); }

.badge {
    display: inline-block; padding: 4px 10px; border-radius: 12px;
    font-size: 0.7rem; font-weight: 700;
}
.badge-green { background: rgba(16,185,129,0.15); color: var(--accent-emerald); }
.badge-yellow { background: rgba(245,158,11,0.15); color: var(--accent-amber); }
.badge-red { background: rgba(244,63,94,0.15); color: var(--accent-rose); }
.badge-blue { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.badge-purple { background: rgba(139,92,246,0.15); color: var(--accent-purple); }

.actions-cell { display: flex; gap: 6px; flex-wrap: wrap; }

/* ===== Thumbnails ===== */
.thumb {
    width: 44px; height: 44px; object-fit: cover; border-radius: 8px;
    border: 1px solid var(--border-glass); cursor: pointer;
    transition: var(--transition);
}
.thumb:hover { transform: scale(1.15); border-color: var(--accent-magenta); box-shadow: 0 0 12px rgba(165, 83, 147, 0.3); }
.thumb-placeholder {
    width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
    border-radius: 8px; background: rgba(255,255,255,0.03); border: 1px solid var(--border-glass);
    font-size: 1.1rem; opacity: 0.4;
}

/* ===== Image Viewer ===== */
.image-viewer {
    position: relative; max-width: 90vw; max-height: 90vh;
    display: flex; align-items: center; justify-content: center;
}
.image-viewer img {
    max-width: 90vw; max-height: 85vh; object-fit: contain;
    border-radius: var(--radius); box-shadow: 0 25px 60px rgba(0,0,0,0.6);
    animation: modalIn 0.3s ease;
}
.image-viewer-close {
    position: absolute; top: -16px; right: -16px;
    background: var(--gradient-danger); color: white;
    border: none; border-radius: 50%; width: 36px; height: 36px;
    font-size: 1rem; cursor: pointer; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4); z-index: 10;
    transition: var(--transition);
}
.image-viewer-close:hover { transform: scale(1.1); }

/* ===== Gallery ===== */
.gallery-filters {
    display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap;
}
.gallery-filters input {
    flex: 1; min-width: 200px; padding: 12px 16px;
    background: rgba(255,255,255,0.05); border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: 'Montserrat', sans-serif; font-size: 0.9rem;
    transition: var(--transition);
}
.gallery-filters input:focus { outline: none; border-color: var(--accent-magenta); box-shadow: 0 0 0 3px rgba(165, 83, 147, 0.2); }
.gallery-filters select {
    padding: 12px 16px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass); border-radius: var(--radius-sm);
    color: var(--text-primary); font-family: 'Montserrat', sans-serif; font-size: 0.85rem;
}
.gallery-filters select option { background: #23233e; }

.gallery-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.gallery-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: var(--radius);
    overflow: hidden; transition: var(--transition);
    animation: fadeInCard 0.4s ease;
}
.gallery-card:hover {
    transform: translateY(-4px);
    border-color: rgba(165, 83, 147, 0.3);
    box-shadow: 0 12px 40px rgba(165, 83, 147, 0.15);
}
.gallery-card.no-image { opacity: 0.7; }
.gallery-card.no-image:hover { opacity: 1; }

@keyframes fadeInCard { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.gallery-card-image {
    width: 100%; height: 180px; overflow: hidden; position: relative;
    background: rgba(0,0,0,0.3); cursor: pointer;
}
.gallery-card-image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s ease;
}
.gallery-card:hover .gallery-card-image img { transform: scale(1.05); }

.gallery-placeholder {
    width: 100%; height: 100%; display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 8px;
    font-size: 2.5rem; opacity: 0.25;
}
.gallery-placeholder span { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; }

.gallery-card-info { padding: 16px; }
.gallery-card-id {
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1.5px; color: var(--accent-magenta); margin-bottom: 4px;
}
.gallery-card-name {
    font-size: 0.95rem; font-weight: 700; color: var(--text-primary);
    margin-bottom: 4px; line-height: 1.3;
}
.gallery-card-cat {
    font-size: 0.7rem; color: var(--text-secondary); margin-bottom: 10px;
}
.gallery-card-stock { margin-bottom: 10px; }
.gallery-card-actions { display: flex; gap: 6px; }

/* ===== Search ===== */
.search-bar {
    display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap;
}
.search-bar input {
    flex: 1; min-width: 200px; padding: 12px 16px;
    background: rgba(255,255,255,0.05); border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-family: 'Montserrat', sans-serif; font-size: 0.9rem;
    transition: var(--transition);
}
.search-bar input:focus { outline: none; border-color: var(--accent-blue); }

/* ===== Modal ===== */
.modal-overlay {
    display: none; position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
    align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--bg-secondary); border: 1px solid var(--border-glass);
    border-radius: var(--radius); padding: 32px; width: 90%; max-width: 500px;
    max-height: 90vh; overflow-y: auto; box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    animation: modalIn 0.3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal h3 {
    font-size: 1.1rem; font-weight: 700; margin-bottom: 24px;
    background: var(--gradient-main); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.modal-actions { display: flex; gap: 12px; margin-top: 24px; justify-content: flex-end; }

/* ===== Toast ===== */
.toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(100px);
    padding: 14px 28px; border-radius: 12px; font-size: 0.85rem; font-weight: 700;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3); z-index: 500;
    opacity: 0; transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none; color: white;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { background: var(--gradient-success); }
.toast.error { background: var(--gradient-danger); }

/* ===== Sections ===== */
.view-section { display: none; }
.view-section.active {
    display: block;
    animation: sectionFadeIn 0.3s ease;
}
@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Mobile hamburger ===== */
.mobile-toggle {
    display: none; position: fixed; top: 16px; left: 16px; z-index: 60;
    background: var(--bg-card); border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm); padding: 10px 14px;
    color: var(--text-primary); font-size: 1.2rem; cursor: pointer;
    backdrop-filter: blur(20px);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-secondary);
}
.empty-state .icon { font-size: 4rem; margin-bottom: 16px; opacity: 0.3; }
.empty-state p { font-size: 0.9rem; }

/* ===== Last Movement Card ===== */
.last-movement { margin-top: 24px; }
.last-movement .movement-detail {
    display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
}
.last-movement .movement-value { font-size: 1.5rem; font-weight: 800; }
.movement-positive { color: var(--accent-emerald); }
.movement-negative { color: var(--accent-rose); }

/* ===== File upload ===== */
.file-upload {
    border: 2px dashed var(--border-glass); border-radius: var(--radius);
    padding: 40px; text-align: center; cursor: pointer;
    transition: var(--transition); margin-bottom: 20px;
}
.file-upload:hover { border-color: var(--accent-blue); background: rgba(59,130,246,0.05); }
.file-upload input[type="file"] { display: none; }
.file-upload .icon { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.5; }
.file-upload p { font-size: 0.85rem; color: var(--text-secondary); }

/* ===== Table hover gradient ===== */
tbody tr:hover td {
    background: linear-gradient(90deg, rgba(165,83,147,0.04) 0%, rgba(63,95,168,0.04) 100%);
}

/* ===== Skeleton Loader ===== */
.skeleton {
    background: linear-gradient(90deg,
        rgba(255,255,255,0.04) 25%,
        rgba(255,255,255,0.09) 50%,
        rgba(255,255,255,0.04) 75%
    );
    background-size: 400% 100%;
    animation: shimmer 1.4s infinite;
    border-radius: 6px;
}
@keyframes shimmer {
    0%   { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.skeleton-row td { padding: 18px 16px !important; }
.skeleton-bar {
    height: 14px;
    border-radius: 6px;
    background: linear-gradient(90deg,
        rgba(255,255,255,0.04) 25%,
        rgba(255,255,255,0.09) 50%,
        rgba(255,255,255,0.04) 75%
    );
    background-size: 400% 100%;
    animation: shimmer 1.4s infinite;
}

/* ===== Custom Confirm Modal ===== */
#confirmModal .modal {
    max-width: 420px; text-align: center;
}
#confirmModal .confirm-icon {
    font-size: 3rem; margin-bottom: 16px; display: block;
}
#confirmModal .confirm-title {
    font-size: 1.1rem; font-weight: 800; margin-bottom: 8px;
    background: var(--gradient-danger);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
#confirmModal .confirm-msg {
    font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.6;
}
#confirmModal .modal-actions { justify-content: center; }

/* ===== Mobile Floating Action Button ===== */
.fab {
    display: none;
    position: fixed; bottom: 24px; right: 24px; z-index: 100;
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--gradient-main);
    border: none; color: white; font-size: 1.5rem;
    box-shadow: 0 8px 24px rgba(165, 83, 147, 0.4);
    cursor: pointer; align-items: center; justify-content: center;
    transition: var(--transition);
}
.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(165, 83, 147, 0.6);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 80px 16px 24px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: flex-start; }
    .modal { width: 95%; padding: 24px; }
    /* Hide page-header buttons, show FAB instead */
    .page-header .btn-success.fab-trigger { display: none; }
    .fab { display: flex; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ===== Stat card pulse on warning/danger ===== */
.stat-card:has(.stat-value.danger) {
    animation: pulseDanger 2.5s ease-in-out infinite;
}
@keyframes pulseDanger {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50% { box-shadow: 0 0 40px rgba(201, 76, 138, 0.45); }
}

/* ===== Nav item tooltip on hover (collapsed sidebar hint) ===== */
.nav-item { position: relative; }