/* ==========================================================================
   Frutas y Verduras Premium SpA - Sistema de Diseño Contable
   Estética Sutil, Moderna y Premium
   ========================================================================== */

:root {
    /* Paleta Cromática Principal (Modo Claro) */
    --primary: #059669;
    --primary-hover: #047857;
    --primary-light: #ecfdf5;
    --primary-border: #a7f3d0;
    --primary-glow: rgba(16, 185, 129, 0.2);

    --success: #10b981;
    --success-bg: #d1fae5;
    --success-text: #065f46;

    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --warning-text: #92400e;

    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --danger-text: #991b1b;

    --info: #3b82f6;
    --info-bg: #dbeafe;
    --info-text: #1e40af;

    /* Neutros y Superficies */
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-subtle: #f1f5f9;
    --bg-input: #ffffff;

    --border-color: #e2e8f0;
    --border-subtle: #cbd5e1;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    /* Sombras Elevadas */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Radios y Transiciones */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Modo Oscuro Refinado */
[data-theme="dark"] {
    --bg-body: #090d16;
    --bg-surface: #111827;
    --bg-surface-elevated: #1e293b;
    --bg-subtle: #1f2937;
    --bg-input: #161f30;

    --border-color: #243048;
    --border-subtle: #334155;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;

    --primary-light: rgba(16, 185, 129, 0.12);
    --primary-border: rgba(16, 185, 129, 0.3);

    --success-bg: rgba(16, 185, 129, 0.15);
    --success-text: #34d399;

    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-text: #fbbf24;

    --danger-bg: rgba(239, 68, 68, 0.15);
    --danger-text: #f87171;

    --info-bg: rgba(59, 130, 246, 0.15);
    --info-text: #60a5fa;

    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

/* Reset y Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   Header & Navegación
   ========================================================================== */
.app-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background-color: rgba(var(--bg-surface), 0.95);
    transition: var(--transition);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-md);
    background: #ffffff;
    padding: 2px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-logo:hover {
    transform: scale(1.08) rotate(-3deg);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-tagline {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Barra de Navegación */
.app-nav {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-container::-webkit-scrollbar {
    display: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.nav-item i {
    font-size: 1.15rem;
    transition: transform 0.2s ease;
}

.nav-item:hover {
    color: var(--primary);
}

.nav-item:hover i {
    transform: translateY(-1px);
}

.nav-item.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ==========================================================================
   Contenido Principal y Vistas
   ========================================================================== */
.main-content {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 24px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.25s ease forwards;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Tarjetas KPI (Dashboard)
   ========================================================================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.kpi-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.kpi-card.danger::before { background-color: var(--danger); }
.kpi-card.success::before { background-color: var(--success); }
.kpi-card.info::before { background-color: var(--info); }
.kpi-card.warning::before { background-color: var(--warning); }

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-subtle);
}

.kpi-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    flex-shrink: 0;
}

.kpi-card.danger .kpi-icon-wrapper { background: var(--danger-bg); color: var(--danger); }
.kpi-card.success .kpi-icon-wrapper { background: var(--success-bg); color: var(--success); }
.kpi-card.info .kpi-icon-wrapper { background: var(--info-bg); color: var(--info); }
.kpi-card.warning .kpi-icon-wrapper { background: var(--warning-bg); color: var(--warning); }

.kpi-details {
    display: flex;
    flex-direction: column;
}

.kpi-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin: 2px 0;
}

.kpi-subtext {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

/* Grilla Dashboard Split */
.dashboard-split {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 24px;
}

@media (max-width: 980px) {
    .dashboard-split {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Superficies y Tarjetas de Contenedores
   ========================================================================== */
.surface-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-surface);
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title-group i {
    font-size: 1.25rem;
}

.card-title-group h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.card-body.p-0 {
    padding: 0;
}

/* Toolbar de Búsqueda y Filtros */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.toolbar-search {
    position: relative;
    flex: 1;
    min-width: 260px;
}

.toolbar-search i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
}

.toolbar-search input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.88rem;
    transition: var(--transition);
}

.toolbar-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.toolbar-filters {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ==========================================================================
   Tablas de Datos Modernas
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    text-align: left;
}

.data-table th {
    padding: 12px 16px;
    background-color: var(--bg-subtle);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background-color 0.15s ease;
}

.data-table tbody tr:hover {
    background-color: var(--bg-subtle);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges e Indicadores */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-success {
    background-color: var(--success-bg);
    color: var(--success-text);
}

.badge-warning {
    background-color: var(--warning-bg);
    color: var(--warning-text);
}

.badge-danger {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.badge-info {
    background-color: var(--info-bg);
    color: var(--info-text);
}

/* ==========================================================================
   Botones y Elementos Interactivos
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn i {
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-inverse);
    box-shadow: 0 1px 3px rgba(5, 150, 105, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(5, 150, 105, 0.35);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--primary-light);
}

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

.btn-ghost:hover {
    background-color: var(--bg-subtle);
    color: var(--text-primary);
}

.btn-success {
    background-color: #16a34a;
    color: #ffffff;
}

.btn-success:hover {
    background-color: #15803d;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.78rem;
    border-radius: var(--radius-sm);
}

.btn-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background-color: var(--bg-subtle);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-close:hover {
    color: var(--danger);
}

/* ==========================================================================
   Modales & Calculadora Dinámica de Amortización
   ========================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeIn 0.2s ease;
}

.modal-backdrop.open {
    display: flex;
}

.modal-dialog {
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-dialog.modal-receipt {
    max-width: 520px;
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-title-group i {
    font-size: 1.4rem;
}

.modal-title-group h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    background-color: var(--bg-surface);
}

/* Formularios */
.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: flex;
    gap: 14px;
}

.col-4 { flex: 4; }
.col-6 { flex: 6; }
.col-8 { flex: 8; }

.form-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-label.required::after {
    content: " *";
    color: var(--danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.88rem;
    transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-help {
    display: block;
    font-size: 0.75rem;
    margin-top: 4px;
}

.form-section-divider {
    display: flex;
    align-items: center;
    margin: 18px 0 12px 0;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-section-divider::before,
.form-section-divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.form-section-divider span {
    padding: 0 10px;
}

/* Caja Calculadora de Amortización Dinámica */
.balance-calculator-card {
    background-color: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 18px;
}

.calc-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.calc-row.highlight {
    font-weight: 600;
}

.calc-row.total-remaining {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    padding-top: 4px;
}

.calc-amount.debt { color: var(--danger); font-weight: 700; }
.calc-amount.pay { color: var(--primary); font-weight: 700; }
.calc-amount.remaining { color: var(--info); font-size: 1.15rem; }

.calc-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 8px 0;
}

/* Selector de Método de Pago */
.payment-method-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.method-option input {
    display: none;
}

.method-box {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: var(--transition);
    background-color: var(--bg-input);
}

.method-box i {
    font-size: 1.3rem;
}

.method-option input:checked + .method-box {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--primary-light);
}

.transfer-fields-box {
    background-color: var(--bg-subtle);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 16px;
    border: 1px dashed var(--primary-border);
}

/* ==========================================================================
   Comprobante de Pago & Recibo Elegante (Imprimible & Compartible)
   ========================================================================== */
.receipt-card {
    background: #ffffff;
    color: #1e293b;
    padding: 28px;
    font-family: var(--font-body);
}

.receipt-header {
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.receipt-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.receipt-company h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: #064e3b;
}

.receipt-company p {
    font-size: 0.78rem;
    color: #64748b;
}

.receipt-badge-status {
    text-align: center;
    background: #ecfdf5;
    color: #047857;
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    border: 1px solid #a7f3d0;
}

.receipt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 14px;
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.rec-item {
    display: flex;
    flex-direction: column;
}

.rec-label {
    font-size: 0.72rem;
    color: #64748b;
    text-transform: uppercase;
    font-weight: 600;
}

.receipt-purchase-detail {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-bottom: 16px;
}

.rec-desc {
    font-size: 0.88rem;
    color: #1e293b;
    margin-top: 4px;
    font-weight: 500;
}

.receipt-amounts {
    background: #f1f5f9;
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 24px;
}

.rec-amount-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #475569;
    padding: 4px 0;
}

.rec-amount-row.highlight {
    font-size: 1.05rem;
    font-weight: 800;
    color: #047857;
    border-top: 1px solid #cbd5e1;
    border-bottom: 1px solid #cbd5e1;
    margin: 6px 0;
    padding: 8px 0;
}

.rec-amount-row.remaining {
    font-size: 0.95rem;
    font-weight: 700;
    color: #0284c7;
}

.receipt-signatures {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
    text-align: center;
}

.signature-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sig-line {
    width: 100%;
    border-top: 1px dashed #94a3b8;
    margin-bottom: 8px;
}

.signature-box span {
    font-size: 0.82rem;
    font-weight: 700;
    color: #1e293b;
}

.signature-box small {
    font-size: 0.72rem;
    color: #64748b;
}

/* ==========================================================================
   Reportes & Deployment Info Box
   ========================================================================== */
.reports-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .reports-grid {
        grid-template-columns: 1fr;
    }
}

.action-buttons-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.deploy-info-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.deploy-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.88rem;
}

.deploy-badge {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    min-width: 95px;
    text-align: center;
}

.deploy-badge.success { background: var(--success-bg); color: var(--success-text); }
.deploy-badge.warning { background: var(--warning-bg); color: var(--warning-text); }
.deploy-badge.info { background: var(--info-bg); color: var(--info-text); }

/* ==========================================================================
   Toast de Notificaciones Flotante
   ========================================================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--text-primary);
    color: var(--bg-surface);
    padding: 12px 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    z-index: 200;
    transform: translateY(0);
    opacity: 1;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.hidden {
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
}

.toast i {
    font-size: 1.3rem;
    color: var(--success);
}

.toast.error i {
    color: var(--danger);
}

/* Helpers */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.py-4 { padding-top: 16px; padding-bottom: 16px; }

@media (max-width: 640px) {
    .desktop-only { display: none; }
    .header-container { padding: 10px 16px; }
    .main-content { padding: 16px; }
    .form-row { flex-direction: column; gap: 0; }
    .col-4, .col-6, .col-8 { flex: 100%; }
}

/* ==============================================
   PANTALLA DE LOGIN (MODERNA Y PREMIUM)
   ============================================== */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, rgba(236,253,245,1) 0%, rgba(209,250,229,1) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 20px;
}

[data-theme="dark"] .login-screen {
    background: linear-gradient(135deg, rgba(9,9,11,1) 0%, rgba(24,24,27,1) 100%);
}

.login-screen.hidden {
    display: none;
}

.login-card {
    background-color: var(--bg-surface);
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    padding: 48px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    border: 1px solid var(--border-color);
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(30px) scale(0.95); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

.login-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: contain;
    margin-bottom: 20px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.05);
}

.login-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 700;
}

.login-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.login-card form {
    text-align: left;
}

.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 1.2rem;
}

.input-with-icon input {
    padding-left: 42px;
}

.login-btn {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    margin-top: 16px;
    justify-content: center;
}

.login-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    margin-bottom: 8px;
}

.login-error.hidden {
    display: none;
}