@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ==========================================================================
   DISEÑO DE SISTEMA - VARIABLES Y CONFIGURACIÓN GLOBAL
   ========================================================================== */
:root {
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Curated Color Palette (HSL Tailored Dark Theme) */
    --bg-main: hsl(225, 39%, 6%);
    --bg-surface: hsla(223, 33%, 12%, 0.65);
    --bg-surface-solid: hsl(223, 33%, 12%);
    --bg-input: hsla(223, 20%, 8%, 0.5);
    
    --border-color: hsla(220, 20%, 25%, 0.4);
    --border-glow: hsla(250, 85%, 65%, 0.15);
    
    /* Brand Gradient Colors */
    --primary-gradient: linear-gradient(135deg, hsl(263, 90%, 55%) 0%, hsl(221, 95%, 55%) 100%);
    --accent-glow: linear-gradient(135deg, hsla(263, 90%, 55%, 0.3) 0%, hsla(221, 95%, 55%, 0.3) 100%);
    
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 68%);
    --text-muted: hsl(215, 12%, 48%);
    
    /* UI States */
    --color-success: hsl(142, 76%, 45%);
    --color-success-bg: hsla(142, 76%, 45%, 0.12);
    --color-warning: hsl(38, 92%, 50%);
    --color-warning-bg: hsla(38, 92%, 50%, 0.12);
    --color-danger: hsl(350, 84%, 55%);
    --color-danger-bg: hsla(350, 84%, 55%, 0.12);
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --blur-effect: blur(16px) saturate(180%);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    background-image: 
        radial-gradient(at 10% 20%, hsla(263, 60%, 15%, 0.3) 0px, transparent 50%),
        radial-gradient(at 90% 80%, hsla(221, 60%, 15%, 0.35) 0px, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Scrollbar Personalizado */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: hsla(220, 20%, 30%, 0.6);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: hsla(220, 20%, 40%, 0.8);
}

/* ==========================================================================
   ESTILOS DE ACCESO (LOGIN)
   ========================================================================== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-card {
    background: var(--bg-surface);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem;
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.brand-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--primary-gradient);
    border-radius: 18px;
    font-size: 2rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    box-shadow: 0 8px 24px hsla(263, 90%, 55%, 0.3);
}

.brand-title {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(120deg, var(--text-primary), hsl(215, 20%, 80%));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.brand-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   COMPONENTES DE FORMULARIO
   ========================================================================== */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.8rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: all 0.25s ease;
}

.form-control:focus {
    outline: none;
    border-color: hsl(263, 90%, 65%);
    box-shadow: 0 0 0 3px hsla(263, 90%, 65%, 0.15);
    background-color: hsla(223, 20%, 12%, 0.8);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    padding: 0.9rem 1.5rem;
    color: white;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 12px hsla(221, 95%, 55%, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px hsla(263, 90%, 55%, 0.3);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(0);
}

.alert {
    background-color: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
    padding: 0.9rem 1.2rem;
    border-radius: 12px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    animation: shake 0.5s ease-in-out;
}

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

/* ==========================================================================
   DISEÑO DEL DASHBOARD (INDEX)
   ========================================================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header principal */
.app-header {
    background: hsla(225, 39%, 6%, 0.8);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    border-bottom: 1px solid var(--border-color);
    padding: 1.2rem 2.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    color: inherit;
}

.header-logo {
    width: 38px;
    height: 38px;
    background: var(--primary-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
}

.header-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: hsla(220, 20%, 20%, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.6rem 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-secondary:hover {
    background-color: hsla(220, 20%, 25%, 0.8);
    border-color: var(--text-secondary);
}

.btn-danger {
    background-color: hsla(350, 84%, 55%, 0.1);
    border: 1px solid hsla(350, 84%, 55%, 0.3);
    color: var(--color-danger);
}

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

/* Contenido Principal */
.main-content {
    flex: 1;
    padding: 2.5rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    animation: fadeIn 0.4s ease-out;
}

/* Indicador de Modo Mock */
.mode-banner {
    background: linear-gradient(90deg, hsla(263, 90%, 55%, 0.15) 0%, hsla(221, 95%, 55%, 0.15) 100%);
    border: 1px solid hsla(263, 90%, 55%, 0.3);
    padding: 1rem 1.5rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
}

.mode-banner-text strong {
    color: hsl(263, 90%, 75%);
}

/* Rejilla de Métricas (Tarjetas de arriba) */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-surface);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: hsla(263, 90%, 55%, 0.4);
}

.metric-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: hsla(263, 90%, 55%, 0.1);
    color: hsl(263, 90%, 70%);
}

.metric-card:nth-child(2) .metric-icon {
    background: hsla(221, 95%, 55%, 0.1);
    color: hsl(221, 95%, 70%);
}

.metric-card:nth-child(3) .metric-icon {
    background: hsla(142, 76%, 45%, 0.1);
    color: hsl(142, 76%, 70%);
}

.metric-card:nth-child(4) .metric-icon {
    background: hsla(350, 84%, 55%, 0.1);
    color: hsl(350, 84%, 70%);
}

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-value {
    font-size: 1.65rem;
    font-weight: 700;
    margin-top: 0.1rem;
}

/* Grid de Gráficos e Insights */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--bg-surface);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.8rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
}

/* Lista de clientes TOP */
.vip-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.vip-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid hsla(220, 20%, 25%, 0.2);
}

.vip-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.vip-name {
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.vip-code {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: block;
}

.vip-amount {
    font-weight: 700;
    color: hsl(142, 76%, 45%);
    font-size: 1rem;
}

/* Secciones de Tablas */
.table-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-wrapper {
    position: relative;
    max-width: 320px;
    width: 100%;
}

.search-input {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.6rem 1rem;
    padding-left: 2.2rem;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: all 0.25s ease;
}

.search-input:focus {
    outline: none;
    border-color: hsl(263, 90%, 65%);
    background-color: hsla(223, 20%, 12%, 0.8);
}

.search-icon {
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.table-premium {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    text-align: left;
}

.table-premium th {
    background-color: hsla(223, 33%, 8%, 0.5);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table-premium td {
    padding: 1rem;
    border-bottom: 1px solid hsla(220, 20%, 20%, 0.5);
    color: var(--text-primary);
}

.table-premium tbody tr {
    transition: background-color 0.2s ease;
}

.table-premium tbody tr:hover {
    background-color: hsla(220, 20%, 25%, 0.2);
}

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

/* Badges / Etiquetas */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

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

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

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

.badge-service {
    background-color: hsla(263, 90%, 55%, 0.15);
    color: hsl(263, 90%, 75%);
    border: 1px solid hsla(263, 90%, 55%, 0.2);
}

/* Pie de página */
.app-footer {
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

/* ==========================================================================
   ANIMACIONES
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}