/* FacturApp - Base CSS v1.0 */
/* Design System: Dark-first, modern ERP */

:root {
    /* Colores primarios */
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: rgba(59, 130, 246, 0.1);
    --primary-glow: rgba(59, 130, 246, 0.3);

    /* Colores de estado */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #6366f1;
    --info-bg: rgba(99, 102, 241, 0.1);

    /* Tema oscuro (por defecto) */
    --bg-body: #0a0a0f;
    --bg-card: #111118;
    --bg-sidebar: #0d0d14;
    --bg-input: #1a1a24;
    --bg-hover: #1e1e2a;
    --bg-table-row: #13131b;
    --bg-table-hover: #1a1a26;
    --bg-modal: #15151e;

    --border: #222233;
    --border-light: #2a2a3d;
    --border-focus: var(--primary);

    --text: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --text-inverse: #18181b;

    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);

    --radius: 8px;
    --radius-lg: 12px;
    --radius-sm: 6px;

    --sidebar-width: 240px;
    --sidebar-collapsed: 60px;

    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

[data-theme="light"] {
    --bg-body: #f4f4f8;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-input: #f4f4f5;
    --bg-hover: #f0f0f5;
    --bg-table-row: #fafafa;
    --bg-table-hover: #f0f0f5;
    --bg-modal: #ffffff;

    --border: #e4e4e7;
    --border-light: #d4d4d8;
    --border-focus: var(--primary);

    --text: #18181b;
    --text-secondary: #52525b;
    --text-muted: #a1a1aa;
    --text-inverse: #fafafa;

    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.1);
}

/* ==================== RESET ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-body);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ==================== SIDEBAR ==================== */
#encabezado-lateral {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 0;
    z-index: 1000;
    transition: var(--transition-slow);
    overflow-y: auto;
    overflow-x: hidden;
}

#encabezado-lateral::-webkit-scrollbar {
    width: 4px;
}

#encabezado-lateral::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.menu-logo {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid var(--border);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-sidebar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.menu-seccion {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 1rem 1rem 0.3rem 1rem;
}

#primer-menu, #segundo-menu {
    padding: 0.25rem 0.5rem;
}

#segundo-menu {
    margin-top: auto;
    padding-bottom: 1rem;
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
}

#encabezado-lateral a.flex {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

#encabezado-lateral a.flex:hover {
    background: var(--bg-hover);
    color: var(--text);
}

#encabezado-lateral a.flex.activo {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 500;
}

#encabezado-lateral a.flex.activo::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

#encabezado-lateral a.flex svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.7;
}

#encabezado-lateral a.flex.activo svg {
    opacity: 1;
}

#encabezado-lateral a.flex.deshabilitado {
    opacity: 0.35;
    pointer-events: none;
}

.badge-prox {
    font-size: 0.6rem;
    background: var(--border);
    color: var(--text-muted);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: auto;
    font-weight: 600;
}

/* Toggle button */
#btn-lateral {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text);
}

#btn-lateral svg {
    width: 20px;
    height: 20px;
}

/* ==================== MAIN ==================== */
main {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    width: calc(100% - var(--sidebar-width));
    min-height: 100vh;
    transition: var(--transition-slow);
}

/* ==================== CARDS ==================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-header h2 svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

/* ==================== TABLAS ==================== */
.tabla-container {
    overflow-x: auto;
    border-radius: var(--radius);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

thead th {
    background: var(--bg-input);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

tbody tr:hover {
    background: var(--bg-table-hover);
}

tbody td {
    padding: 0.7rem 1rem;
    vertical-align: middle;
}

tbody td:first-child {
    font-weight: 500;
}

/* ==================== FORMULARIOS ==================== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="date"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 0.6rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition);
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

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

textarea {
    min-height: 80px;
    resize: vertical;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a1a1aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

/* ==================== BOTONES ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn svg {
    width: 16px;
    height: 16px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-success:hover {
    background: #059669;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ==================== NOTIFICACIONES ==================== */
#notificaciones {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

#notificaciones article {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

#notificaciones article svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.noti-correcto {
    background: var(--success-bg);
    border: 1px solid var(--success);
    color: var(--success);
}

.noti-error {
    background: var(--danger-bg);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.noti-advertencia {
    background: var(--warning-bg);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.noti-info {
    background: var(--info-bg);
    border: 1px solid var(--info);
    color: var(--info);
}

.noti-cerrar {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.6;
    padding: 0 0.25rem;
}

.noti-cerrar:hover {
    opacity: 1;
}

/* ==================== BUSCADORES Y FILTROS ==================== */
.barra-acciones {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.buscador-container {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.buscador-container svg {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.buscador-container input {
    padding-left: 2.5rem;
}

/* ==================== PAGINACIÓN ==================== */
.paginacion {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 1.5rem;
}

.pag-btn {
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.pag-btn:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.pag-activo {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pag-activo:hover {
    background: var(--primary-hover);
    color: #fff;
}

/* ==================== DASHBOARD ==================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: var(--success-bg); color: var(--success); }
.stat-icon.orange { background: var(--warning-bg); color: var(--warning); }
.stat-icon.red { background: var(--danger-bg); color: var(--danger); }
.stat-icon.purple { background: var(--info-bg); color: var(--info); }

.stat-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ==================== LOGIN ==================== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    background: var(--bg-body);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-card h1 {
    text-align: center;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.login-card .form-group {
    margin-bottom: 1.25rem;
}

.login-card .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 0.75rem;
    font-size: 0.95rem;
}

/* ==================== SIN DATOS ==================== */
#no-hay-datos {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    gap: 1rem;
}

#no-hay-datos svg {
    opacity: 0.3;
}

#no-hay-datos h3 {
    font-weight: 400;
    font-size: 1.1rem;
}

/* ==================== UTILIDADES ==================== */
.flex { display: flex; }
.column { flex-direction: column; }
.row { flex-direction: row; }
.gap02 { gap: 0.2rem; }
.gap05 { gap: 0.5rem; }
.gap1 { gap: 1rem; }
.supercentrado { align-items: center; justify-content: center; }
.alineado { align-items: center; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.font-mono { font-family: 'JetBrains Mono', 'Consolas', monospace; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.page-title svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

/* ==================== FOOTER ==================== */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    #encabezado-lateral {
        transform: translateX(-100%);
    }

    #encabezado-lateral.activo {
        transform: translateX(0);
    }

    #btn-lateral {
        display: flex;
    }

    main {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
        padding-top: 3.5rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .barra-acciones {
        flex-direction: column;
        align-items: stretch;
    }

    .buscador-container {
        max-width: 100%;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 404 ==================== */
.pagina-404 {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 1rem;
}

.pagina-404 h1 {
    font-size: 6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.pagina-404 p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ==================== INSTALADOR ==================== */
.installer-container {
    max-width: 700px;
    margin: 2rem auto;
}

.installer-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.step-status {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 700;
}

.step-ok { background: var(--success); color: #fff; }
.step-error { background: var(--danger); color: #fff; }
.step-pending { background: var(--border); color: var(--text-muted); }