/* =====================================================================
   Netlatin v2 — Design tokens
   ===================================================================== */

:root {
    /* Marca Netlatin: azul corporativo + acento ámbar para acciones */
    --brand-50:  #eef4fb;
    --brand-100: #d9e6f5;
    --brand-200: #b3cdec;
    --brand-300: #80a8d9;
    --brand-400: #4d83c5;
    --brand-500: #2766b1;
    --brand-600: #204080;   /* base */
    --brand-700: #1a3469;
    --brand-800: #142852;
    --brand-900: #0d1c3b;

    --accent:   #d97706;
    --success:  #15803d;
    --warning:  #b45309;
    --danger:   #b91c1c;

    --ink-900:  #0f172a;
    --ink-700:  #334155;
    --ink-500:  #64748b;
    --ink-300:  #cbd5e1;
    --ink-100:  #e2e8f0;
    --ink-50:   #f1f5f9;

    --bg-app:    #f6f7fb;
    --bg-card:   #ffffff;
    --border:    #e5e7eb;

    --radius-sm:  6px;
    --radius:     10px;
    --radius-lg:  14px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
    --shadow:    0 4px 12px rgba(15, 23, 42, .07);
    --shadow-lg: 0 12px 28px rgba(15, 23, 42, .10);

    --font-display: "Fraunces", "Georgia", serif;
    --font-body:    "Outfit", "Segoe UI", system-ui, -apple-system, sans-serif;
    --font-mono:    "JetBrains Mono", "SF Mono", Consolas, monospace;
}

/* =====================================================================
   Reset & base
   ===================================================================== */

html, body { height: 100%; }
body {
    font-family: var(--font-body);
    font-feature-settings: "ss01", "cv11";
    background: var(--bg-app);
    color: var(--ink-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, .display-font {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--ink-900);
}

a { color: var(--brand-600); }
a:hover { color: var(--brand-700); }

/* =====================================================================
   App shell
   ===================================================================== */

.app-shell {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

.app-sidebar {
    background: linear-gradient(180deg, var(--brand-800), var(--brand-900));
    color: #e2e8f0;
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.app-sidebar .brand {
    padding: 0 1.5rem 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    margin-bottom: 1rem;
}
.app-sidebar .brand h1 {
    color: #fff;
    font-size: 1.4rem;
    margin: 0;
    letter-spacing: -0.02em;
}
.app-sidebar .brand .subtitle {
    color: rgba(255,255,255,.55);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 4px;
}

.nav-group {
    padding: 0 0.75rem;
    margin-bottom: 1.25rem;
}
.nav-group-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,.45);
    padding: 0 0.75rem;
    margin-bottom: 0.5rem;
}
.nav-item-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.92rem;
    transition: background .15s, color .15s;
}
.nav-item-link i { width: 16px; text-align: center; opacity: 0.75; }
.nav-item-link:hover {
    background: rgba(255,255,255,.05);
    color: #fff;
}
.nav-item-link.active {
    background: rgba(255,255,255,.10);
    color: #fff;
    font-weight: 500;
}
.nav-item-link.active i { opacity: 1; color: #fbbf24; }

.app-sidebar .footer-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,.08);
    margin-top: auto;
}

.app-main {
    padding: 1.75rem 2rem;
    max-width: 1400px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.page-header h1 {
    margin: 0;
    font-size: 1.75rem;
}
.page-header .subtitle {
    color: var(--ink-500);
    font-size: 0.92rem;
    margin-top: 4px;
}

/* =====================================================================
   Cards & componentes
   ===================================================================== */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.card-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    padding: 0.85rem 1.1rem;
}

.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    letter-spacing: 0.01em;
}
.btn-primary {
    background: var(--brand-600);
    border-color: var(--brand-600);
}
.btn-primary:hover {
    background: var(--brand-700);
    border-color: var(--brand-700);
}

.badge {
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 0.35em 0.6em;
}

/* =====================================================================
   Login screen
   ===================================================================== */

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at 15% 20%, rgba(32, 64, 128, .12), transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(217, 119, 6, .08), transparent 50%),
        var(--bg-app);
    padding: 1.5rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem 2.25rem;
}
.login-card .brand-mark {
    text-align: center;
    margin-bottom: 1.75rem;
}
.login-card .brand-mark img {
    max-height: 56px;
    margin-bottom: 0.5rem;
}
.login-card h1 {
    text-align: center;
    font-size: 1.5rem;
    margin: 0 0 0.25rem 0;
}
.login-card .lead {
    text-align: center;
    color: var(--ink-500);
    font-size: 0.92rem;
    margin-bottom: 1.75rem;
}
.login-card .form-control {
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    border-color: var(--ink-300);
}
.login-card .form-control:focus {
    border-color: var(--brand-500);
    box-shadow: 0 0 0 3px rgba(39, 102, 177, .15);
}
.login-card .input-group-text {
    background: var(--ink-50);
    border-color: var(--ink-300);
    color: var(--ink-500);
}
.login-card .btn-submit {
    width: 100%;
    padding: 0.7rem;
    font-weight: 600;
    background: var(--brand-600);
    border: none;
    color: #fff;
    border-radius: var(--radius-sm);
    transition: background .15s;
}
.login-card .btn-submit:hover { background: var(--brand-700); }
.login-card .btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--ink-500);
    font-size: 0.8rem;
}

/* =====================================================================
   Responsive
   ===================================================================== */

@media (max-width: 768px) {
    .app-shell { grid-template-columns: 1fr; }
    .app-sidebar { position: static; height: auto; }
    .app-main { padding: 1rem; }
}