:root {
    /* Fondo muy claro, sofisticado */
    --bg-main: #F4F7FB; 
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: rgba(203, 213, 225, 0.6);
    --border-light: rgba(255, 255, 255, 0.8);
    
    /* Textos contrastantes */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    
    /* El Color Resaltante (Trust Navy / Royal Blue) */
    --primary-navy: #0F172A; /* Slate muy oscuro para títulos */
    --primary-blue: #1E3A8A; /* Azul rey corporativo */
    --accent-blue: #2563EB;  /* Azul eléctrico vibrante para botones primarios */
    
    /* Estados (Soft & Premium) */
    --emerald: #059669;
    --emerald-light: #ECFDF5;
    --amber: #D97706;
    --amber-light: #FFFBEB;
    --coral: #DC2626;
    --coral-light: #FEF2F2;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Outfit', var(--font-main);
    
    /* Sombras Premium / Difuminadas */
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 16px -4px rgba(15, 23, 42, 0.05), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.03);
    --shadow-xl: 0 25px 50px -12px rgba(15, 23, 42, 0.12);
}

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

body {
    background-color: var(--bg-main);
    /* Subtle mesh gradient for premium feel */
    background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.05) 0px, transparent 40%),
        radial-gradient(at 100% 100%, rgba(15, 23, 42, 0.03) 0px, transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

.hidden {
    display: none !important;
}

/* Glassmorphism Premium */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

/* LOGIN */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 460px;
    padding: 48px 42px;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-xl);
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 24px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: white;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.logo-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2.2px;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.85rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: var(--primary-navy);
}

.login-card h2 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--primary-navy);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 6px;
    margin-bottom: 36px;
    font-weight: 400;
}

/* FORMS & INPUTS */
.input-group {
    margin-bottom: 22px;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    background: #FFFFFF;
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-main);
    transition: all 0.25s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
    background: #FFFFFF;
}

/* Inputs con Iconos Internos */
.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon > svg:first-child {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    width: 20px;
    height: 20px;
    transition: color 0.25s;
    pointer-events: none;
}

.input-with-icon input {
    padding-left: 46px; /* Espacio para el icono izquierdo */
}

.input-with-icon input:focus + svg,
.input-with-icon:focus-within > svg:first-child {
    color: var(--accent-blue);
}

.password-wrapper input {
    padding-right: 48px; /* Espacio para el botón de ojito */
}

.toggle-password-btn {
    position: absolute;
    right: 14px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: 6px;
    transition: all 0.2s;
}

.toggle-password-btn:hover {
    background: #F1F5F9;
    color: var(--primary-navy);
}

.toggle-password-btn svg {
    width: 20px;
    height: 20px;
}

.help-text {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 6px;
}

/* BUTTONS */
.btn {
    padding: 14px 24px;
    border-radius: 12px;
    border: none;
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2.2px;
}

.btn-full { width: 100%; }
.btn-large { padding: 16px 28px; font-size: 1.05rem; }

/* El "Solo 1 Color que resalte" - Accent Blue */
.btn-primary {
    background: var(--accent-blue);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
    background: #1D4ED8;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}
.btn-primary:active {
    transform: translateY(0);
}

.btn-emerald {
    background: var(--primary-navy);
    color: #FFFFFF;
    width: 100%;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.25);
}
.btn-emerald:hover {
    background: #000000;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
}

/* APP NAVIGATION */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 48px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.top-nav .brand-logo {
    margin-bottom: 0;
}

.top-nav .logo-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
}
.top-nav .logo-icon svg { width: 22px; height: 22px; }

.top-nav .logo-text {
    font-size: 1.4rem;
}

.nav-links {
    display: flex;
    gap: 8px;
    background: rgba(241, 245, 249, 0.6);
    padding: 6px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
}

.nav-item {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 10px 22px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-item svg {
    width: 18px;
    height: 18px;
}

.nav-item:hover {
    color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.5);
}

.nav-item.active {
    color: var(--accent-blue);
    background: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 20px;
}

.badge-admin {
    color: var(--primary-navy);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.badge-admin svg {
    color: var(--accent-blue);
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-family: var(--font-main);
}
.btn-logout svg { width: 16px; height: 16px; }

.btn-logout:hover {
    background: var(--coral-light);
    color: var(--coral);
    border-color: #FECACA;
}

/* MAIN CONTENT */
.main-content {
    max-width: 1360px;
    margin: 0 auto;
    padding: 48px 32px;
}

.section-header {
    margin-bottom: 40px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-navy);
    margin-bottom: 8px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.grid-2col {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
}

.form-card { 
    padding: 40px;
}

.form-card h3 { 
    margin-bottom: 28px; 
    font-family: var(--font-heading); 
    color: var(--primary-navy);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.form-card h3::before {
    content: '';
    display: block;
    width: 6px;
    height: 20px;
    background: var(--accent-blue);
    border-radius: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 32px 0;
}

/* PREVIEW CARD */
.preview-card { 
    padding: 40px;
}

.preview-card h3 {
    margin-bottom: 24px;
    font-family: var(--font-heading);
    color: var(--primary-navy);
    font-size: 1.25rem;
}

.calc-card {
    background: #FFFFFF;
    padding: 28px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin: 16px 0 28px;
    box-shadow: var(--shadow-sm);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: 0.95rem;
    color: var(--text-secondary);
}
.calc-row:last-of-type { border-bottom: none; }

.calc-row strong {
    color: var(--text-primary);
    font-weight: 600;
}

.calc-row.highlight { 
    font-size: 1.15rem; 
}

.calc-row.total {
    font-size: 1.3rem;
    border-top: 2px solid var(--text-primary);
    padding-top: 20px;
    margin-top: 8px;
    color: var(--primary-navy);
    font-weight: 700;
}

.text-emerald { color: var(--accent-blue) !important; } /* Reutilizando el accent blue */
.text-amber { color: var(--amber) !important; }

.info-box {
    background: #F8FAFC;
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 14px;
}

.info-box h4 {
    color: var(--primary-navy);
    margin-bottom: 12px;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    display: flex;
    align-items: center;
}

.info-box p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.info-box ul { 
    margin: 14px 0 0 24px; 
    font-size: 0.9rem; 
    color: var(--text-secondary); 
}

.info-box li { 
    margin-bottom: 8px; 
}
.info-box li strong { color: var(--text-primary); }

/* KPI GRID */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}

.kpi-card {
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.kpi-card::after {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.kpi-title { 
    display: block; 
    font-size: 0.85rem; 
    color: var(--text-secondary); 
    font-weight: 700; 
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.kpi-val { 
    display: block; 
    font-size: 2.4rem; 
    font-weight: 700; 
    font-family: var(--font-heading); 
    color: var(--primary-navy);
    margin-top: 12px; 
    letter-spacing: -1px;
}

/* CLIENT CARDS GRID */
.client-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 28px;
}

.client-card {
    padding: 28px;
    background: #FFFFFF;
    border-radius: 18px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.client-card:hover { 
    transform: translateY(-6px); 
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.status-indicator {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
}

.client-card.status-verde .status-indicator { background: var(--emerald); }
.client-card.status-amarillo .status-indicator { background: var(--amber); }
.client-card.status-rojo .status-indicator { background: var(--coral); }

.card-top { 
    display: flex; 
    justify-content: space-between; 
    align-items: flex-start; 
    margin-bottom: 20px; 
    padding-top: 8px;
}

.card-top h3 { 
    font-size: 1.35rem; 
    color: var(--primary-navy);
    font-weight: 700;
    font-family: var(--font-heading);
}

.badge-status {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.bg-verde { background: var(--emerald-light); color: var(--emerald); }
.bg-amarillo { background: var(--amber-light); color: var(--amber); }
.bg-rojo { background: var(--coral-light); color: var(--coral); }

.client-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    background: #F8FAFC;
    padding: 18px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.client-stats strong {
    color: var(--text-primary);
    font-weight: 600;
}

.card-actions { display: flex; gap: 12px; }
.btn-small { padding: 12px 20px; font-size: 0.9rem; }

/* CHECKLIST DE ABONOS */
.search-box { 
    padding: 20px 28px; 
    margin-bottom: 32px; 
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box svg {
    color: var(--text-muted);
    width: 24px;
    height: 24px;
}

.search-box input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-main);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box input:focus { outline: none; }

.weeks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.week-card {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    transition: all 0.25s;
    box-shadow: var(--shadow-sm);
}

.week-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.week-card.is-paid {
    background: #F8FAFC;
    border-color: var(--border-color);
}
.week-card.is-paid:hover {
    border-color: var(--emerald);
}

.btn-check {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: #FFFFFF;
    color: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-check:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.week-card.is-paid .btn-check {
    background: var(--emerald);
    border-color: var(--emerald);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
}
.week-card.is-paid .btn-check:hover {
    background: #047857;
    border-color: #047857;
    color: #FFFFFF;
}

.empty-state {
    padding: 64px;
    text-align: center;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.spin {
    animation: spin 1s linear infinite;
}
@keyframes spin { 
    100% { transform: rotate(360deg); } 
}

/* SweetAlert2 Adaptación Estilo Financiero */
.swal2-popup {
    border-radius: 20px !important;
    font-family: var(--font-main) !important;
    box-shadow: var(--shadow-xl) !important;
    padding: 24px !important;
}
.swal2-title {
    color: var(--primary-navy) !important;
    font-family: var(--font-heading) !important;
    font-weight: 700 !important;
}
.swal2-confirm {
    border-radius: 12px !important;
    font-weight: 600 !important;
    padding: 12px 24px !important;
}
.swal2-cancel {
    border-radius: 12px !important;
    font-weight: 600 !important;
    padding: 12px 24px !important;
}

/* Choices.js Premium Theme Overrides */
.choices__inner {
    background-color: var(--input-bg) !important;
    border: 1.5px solid var(--border-color) !important;
    border-radius: 12px !important;
    padding: 10px 16px !important;
    min-height: 50px !important;
    font-family: var(--font-main) !important;
    font-size: 0.95rem !important;
    color: var(--primary-navy) !important;
    transition: var(--transition) !important;
}
.choices[data-type*="select-one"].is-open::after {
    border-color: transparent transparent var(--primary-navy) transparent !important;
    margin-top: -7.5px !important;
}
.choices[data-type*="select-one"]::after {
    border: 5px solid transparent !important;
    border-color: var(--primary-navy) transparent transparent transparent !important;
    right: 16px !important;
}
.choices__list--dropdown {
    border-radius: 12px !important;
    border: 1.5px solid var(--accent-blue) !important;
    box-shadow: var(--shadow-lg) !important;
    font-family: var(--font-main) !important;
}
.choices__item--choice {
    font-size: 0.95rem !important;
}
.choices__list--dropdown .choices__item--selectable.is-highlighted {
    background-color: var(--accent-blue) !important;
    color: #FFFFFF !important;
}