:root {
    /* Paleta Clara Moderna (Light Mode) */
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --border-card: #e2e8f0;
    --border-card-glow: #cbd5e1;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-glow: rgba(79, 70, 229, 0.15);
    
    --accent-cyan: #0284c7;
    --accent-emerald: #059669;
    --accent-rose: #e11d48;
    --accent-amber: #d97706;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #64748b;
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 10% 10%, rgba(99, 102, 241, 0.05) 0%, transparent 35%),
        radial-gradient(circle at 90% 90%, rgba(14, 165, 233, 0.05) 0%, transparent 35%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar Superior Clara */
.navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-card);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand-icon {
    font-size: 1.4rem;
}

.brand-sub {
    color: var(--primary);
    font-size: 0.85em;
    font-weight: 600;
    background: #eef2ff;
    padding: 2px 8px;
    border-radius: 6px;
    margin-left: 4px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f1f5f9;
    border: 1px solid var(--border-card);
    padding: 6px 14px 6px 8px;
    border-radius: 9999px;
}

.user-avatar-placeholder {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #e2e8f0;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.user-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Badges Claros */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.badge-success {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.badge-warning {
    background: #fffbeb;
    color: #b45309;
    border: 1px solid #fde68a;
}

.badge-danger {
    background: #fff1f2;
    color: #be123c;
    border: 1px solid #fecdd3;
}

.badge-info {
    background: #f0f9ff;
    color: #0369a1;
    border: 1px solid #bae6fd;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
    outline: none;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 2px 4px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-main);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

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

.btn-ghost:hover {
    color: var(--text-main);
    background: #f1f5f9;
}

.btn-stripe {
    background: #635bff;
    color: #ffffff;
    padding: 12px 24px;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(99, 91, 255, 0.25);
}

.btn-stripe:hover {
    background: #534be0;
    transform: translateY(-1px);
}

.btn-sm {
    padding: 5px 11px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

/* Alertas */
.message-container {
    margin-top: 18px;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    background: #ffffff;
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-sm);
    font-size: 0.9rem;
}

.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.alert-error {
    background: #fff1f2;
    border-color: #fecdd3;
    color: #9f1239;
}

.alert-warning {
    background: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background: #f0f9ff;
    border-color: #bae6fd;
    color: #075985;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 28px 0 56px 0;
}

/* Cards Claras */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 18px;
    line-height: 1.5;
}

/* Auth Cards Claras */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(75vh - 100px);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-logo {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

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

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-input {
    width: 100%;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.92rem;
    transition: var(--transition);
}

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

/* Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}

.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-4  { grid-column: span 4; }
.col-6  { grid-column: span 6; }

@media (max-width: 900px) {
    .col-8, .col-4, .col-6 { grid-column: span 12; }
}

/* Tabs de Navegación */
.tab-btn {
    border-radius: var(--radius-md);
    padding: 9px 16px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-dim);
    border: 1px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
    background: transparent;
}

.tab-btn:hover {
    color: var(--text-main);
    background: #e2e8f0;
}

.tab-btn.active {
    color: var(--primary);
    background: #eef2ff;
    border-color: #c7d2fe;
    font-weight: 700;
}

/* Tablas Claras y Elegantes */
.table-responsive {
    overflow-x: auto;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    background: #ffffff;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.custom-table th {
    padding: 12px 16px;
    background: #f8fafc;
    color: var(--text-dim);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-card);
}

.custom-table td {
    padding: 13px 16px;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-main);
}

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

.custom-table tr:hover td {
    background: #f8fafc;
}

/* Token Box y Bloques de Código */
code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    background: #f1f5f9;
    color: #0369a1;
    padding: 3px 6px;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
}


/* Enlaces de Navegación */
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-main);
    background: #f1f5f9;
}

.nav-link.active {
    color: var(--primary);
    background: #eef2ff;
    font-weight: 700;
}

/* 6 Grandes Secciones Clickeables (Hub Cards) */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

@media (max-width: 980px) {
    .hub-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .hub-grid { grid-template-columns: 1fr; }
}

.hub-card {
    background: #ffffff;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    cursor: pointer;
}

.hub-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
}

.hub-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
}

.hub-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}

.hub-card-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hub-card-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
    margin-bottom: 22px;
}

.hub-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid #f1f5f9;
    font-size: 0.85rem;
    font-weight: 600;
}