/* ========================================
   INBOT - SaaS Modern UI
   Diseño inspirado en Stripe, Linear, Notion
   ======================================== */

:root {
    /* Colores - Modo Claro */
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F1F5F9;
    --border-color: #E2E8F0;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-tertiary: #94A3B8;
    
    /* Colores primarios */
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --primary-light: #DBEAFE;
    
    /* Estados */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #6366F1;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition: all 0.15s ease-in-out;
}

/* Dark Mode */
.dark {
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --border-color: #475569;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100%;
}

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
    min-width: 0;
    max-width: 100%;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
}

.sidebar-header {
    position: relative;
    padding: var(--spacing-lg);
    padding-right: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: var(--font-size-xl);
    width: 100%;
}

.logo img,
.logo svg {
    width: 100%;
    height: auto;
    max-height: 60px;
    object-fit: contain;
}

.logo:hover {
    color: var(--primary);
    transition: var(--transition);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-section {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.nav-section:first-child {
    margin-top: 0;
}

.nav-item-sub {
    padding-left: calc(var(--spacing-md) + 0.5rem);
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    text-decoration: none;
    color: inherit;
    transition: background-color 0.2s;
    border-radius: 8px;
    cursor: pointer;
}

.user-menu:hover {
    background: var(--bg-tertiary);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: capitalize;
}

.logout-form {
    margin: 0;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
    max-width: 100%;
    overflow-x: hidden;
}

.top-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.content-area {
    flex: 1;
    padding: var(--spacing-xl);
    max-width: 100%;
    width: 100%;
    min-width: 0;
    margin: 0 auto;
    overflow-x: hidden;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 8px;
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    background: #DC2626;
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    color: var(--text-secondary);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-change {
    font-size: var(--font-size-xs);
    color: var(--success);
    margin-top: var(--spacing-xs);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: var(--transition);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.table thead {
    background: var(--bg-tertiary);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

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

/* Alerts */
.alert {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-success {
    background: #ECFDF5;
    border-color: var(--success);
    color: #065F46;
}

.alert-error {
    background: #FEF2F2;
    border-color: var(--error);
    color: #991B1B;
}

.alert-warning {
    background: #FFFBEB;
    border-color: var(--warning);
    color: #92400E;
}

.alert-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

.badge-error {
    background: #FEE2E2;
    color: #991B1B;
}

.badge-info {
    background: #E0E7FF;
    color: #3730A3;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    margin-bottom: var(--spacing-lg);
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Auth Layout */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
}

.auth-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.auth-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* ========== Responsive: móvil y tablet ========== */

/* Barra superior móvil (solo visible en pantallas pequeñas) */
.mobile-top-bar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    min-height: 56px;
    padding: env(safe-area-inset-top, 0px) max(var(--spacing-md), env(safe-area-inset-right, 0px)) 0 max(var(--spacing-md), env(safe-area-inset-left, 0px));
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    align-items: center;
    gap: var(--spacing-md);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-btn:hover,
.mobile-menu-btn:focus {
    background: var(--bg-tertiary);
}

.mobile-page-title {
    flex: 1;
    min-width: 0;
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-top-bar-spacer {
    width: 44px;
    min-width: 44px;
}

/* Overlay del sidebar en móvil */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 199;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.sidebar-overlay.is-visible {
    display: block;
    opacity: 1;
}

/* Botón cerrar en el sidebar (solo móvil) */
.sidebar-close-btn {
    display: none;
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

@media (max-width: 768px) {
    .mobile-top-bar {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: 200;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    }

    .app-layout.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .sidebar {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .sidebar-close-btn {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding-top: calc(56px + env(safe-area-inset-top, 0px)); /* barra móvil + safe area */
        width: 100%;
    }

    .top-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .top-header .page-title {
        display: none;
    }

    .header-content {
        justify-content: flex-end;
    }

    .header-actions {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .header-actions .btn,
    .header-actions a.btn {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .content-area {
        padding: var(--spacing-md);
    }

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

    .card {
        padding: var(--spacing-md);
        max-width: 100%;
        min-width: 0;
    }

    .card-header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        min-width: 0;
    }

    /* Evitar que textos largos desborden */
    .content-area,
    .card,
    .card-body,
    .page-title,
    .header-actions {
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    /* Tablas: scroll horizontal en móvil */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .table-responsive .table,
    .content-area .table {
        min-width: 500px;
    }

    /* Contenedores que envuelven una tabla: permitir scroll en móvil (navegadores con :has) */
    @supports selector(:has(*)) {
        .content-area .card:has(.table),
        .content-area > div:has(> .table) {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
    }

    /* Formularios: touch targets y espaciado */
    .form-group {
        margin-bottom: var(--spacing-md);
    }

    .form-input,
    .form-textarea,
    .form-select {
        min-height: 44px;
        padding: var(--spacing-md);
        font-size: 16px; /* evita zoom en iOS */
    }

    .form-textarea {
        min-height: 120px;
    }

    .btn {
        min-height: 44px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .sidebar .nav-link {
        min-height: 48px;
        padding: var(--spacing-md) var(--spacing-lg);
        display: flex;
        align-items: center;
    }

    .user-menu {
        min-height: 48px;
    }

    .empty-state {
        padding: var(--spacing-lg);
    }
}

/* Breakpoint extra pequeño (móviles muy pequeños) */
@media (max-width: 480px) {
    .content-area {
        padding: var(--spacing-sm);
    }

    .mobile-top-bar {
        padding: 0 var(--spacing-sm);
    }

    .header-actions {
        width: 100%;
        justify-content: stretch;
    }

    .header-actions .btn,
    .header-actions a.btn {
        flex: 1;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.hidden {
    display: none;
}