/* ==========================================================================
   UTS Brand Stylesheet
   --------------------------------------------------------------------------
   Single source of truth for the UTS visual identity.
   Plain static CSS served directly from /public/css/uts.css.
   No build step, no Vite, no Tailwind, no PostCSS.
   Bootstrap 5.3 and Bootstrap Icons are loaded separately via CDN.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
    --uts-azul: #0b4a75;
    --uts-verde-lima: #C3D730;
    --uts-verde: #6dab3c;
    --uts-gris: #B3B3B3;
    --uts-blanco: #ffffff;
    --uts-azul-oscuro: #0a3d5f;
    --uts-sidebar-1: #003366;
    --uts-sidebar-2: #001a33;
    --uts-accent: #ff6600;
    --uts-bg: #f4f6f9;
    --uts-border: #dee2e6;
    --sidebar-width: 260px;

    /* Bootstrap-like alias so views can use bg-uts-primary / text-uts-primary / border-uts */
    --uts-primary: #0b4a75;
    --uts-primary-rgb: 11, 74, 117;
}

/* --------------------------------------------------------------------------
   2. Base defaults
   -------------------------------------------------------------------------- */
body {
    background-color: var(--uts-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* --------------------------------------------------------------------------
   3. Admin layout shell
   -------------------------------------------------------------------------- */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: linear-gradient(180deg, var(--uts-sidebar-1) 0%, var(--uts-sidebar-2) 100%);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.7);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.sidebar-nav .nav-link:hover,
.sidebar-nav .nav-link.active {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--uts-accent);
}

.sidebar-nav .nav-link i {
    width: 24px;
    margin-right: 0.75rem;
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.top-navbar {
    background: #fff;
    border-bottom: 1px solid var(--uts-border);
    padding: 0.75rem 1.5rem;
}

.content-wrapper {
    padding: 1.5rem;
}

/* --------------------------------------------------------------------------
   4. Responsive: off-canvas sidebar below the lg breakpoint
   -------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

/* --------------------------------------------------------------------------
   5. Public shell: accent bar, navbar, footer
   -------------------------------------------------------------------------- */

/* Accent strip. The same class is used both at the top of the navbar and at
   the top of the footer, and both usages share the exact same treatment, so a
   single class covers both (no variant modifier is required). */
.uts-accent-bar {
    height: 4px;
    background: linear-gradient(90deg, var(--uts-verde-lima) 0%, var(--uts-verde) 100%);
}

.navbar-uts {
    background-color: var(--uts-azul);
}

.navbar-uts .nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-uts .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--uts-verde-lima);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-uts .nav-link:hover::after,
.navbar-uts .nav-link.active::after {
    width: 80%;
}

.uts-footer {
    background: linear-gradient(135deg, var(--uts-azul) 0%, var(--uts-azul-oscuro) 100%);
    color: var(--uts-blanco);
}

.uts-footer a {
    color: var(--uts-verde-lima);
    text-decoration: none;
    transition: color 0.3s ease;
}

.uts-footer a:hover {
    color: #fff;
}

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.btn-uts-primary {
    background-color: var(--uts-verde-lima);
    border-color: var(--uts-verde-lima);
    color: #333;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-uts-primary:hover {
    background-color: var(--uts-verde);
    border-color: var(--uts-verde);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(195, 215, 48, 0.3);
}

.btn-outline-uts {
    border-color: var(--uts-verde-lima);
    color: var(--uts-verde-lima);
    font-weight: 600;
}

.btn-outline-uts:hover {
    background-color: var(--uts-verde-lima);
    border-color: var(--uts-verde-lima);
    color: #333;
}

/* --------------------------------------------------------------------------
   7. Forms
   -------------------------------------------------------------------------- */
.uts-input {
    border-radius: 0.5rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.uts-input:focus {
    border-color: var(--uts-verde-lima);
    box-shadow: 0 0 0 3px rgba(195, 215, 48, 0.1);
}

.uts-label {
    font-weight: 600;
    color: var(--uts-azul);
    margin-bottom: 0.35rem;
}

/* --------------------------------------------------------------------------
   8. Cards and surfaces
   -------------------------------------------------------------------------- */
.uts-card {
    background: var(--uts-blanco);
    border-radius: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* Card headers inherit Bootstrap's default 1rem horizontal padding, while every
   card body in this project uses p-4 (1.5rem). Without this rule the header text
   sits outside the body's text column and crowds the 1rem card radius. */
.uts-card .card-header,
.card .card-header {
    padding: 1.25rem 1.5rem;
}

.card-header > :last-child {
    margin-bottom: 0;
}

.uts-logo-container {
    background-color: var(--uts-blanco);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(195, 215, 48, 0.3);
}

.uts-stat-card {
    background: var(--uts-blanco);
    border: none;
    border-radius: 1rem;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.uts-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.uts-card-hover {
    transition: all 0.3s ease;
}

.uts-card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1) !important;
}

/* Admin card treatment */
.card {
    border: none;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

/* --------------------------------------------------------------------------
   9. Badges
   -------------------------------------------------------------------------- */
.badge-uts {
    background-color: var(--uts-verde-lima);
    color: #333;
}

.badge-state {
    font-size: 0.8rem;
    padding: 0.4em 0.8em;
}

/* --------------------------------------------------------------------------
   10. Decorative elements
   -------------------------------------------------------------------------- */
.uts-divider {
    height: 4px;
    background: linear-gradient(90deg, var(--uts-verde-lima) 0%, var(--uts-verde) 100%);
    border-radius: 2px;
    width: 60px;
}

.hero-gradient {
    background: linear-gradient(135deg, var(--uts-azul) 0%, var(--uts-azul-oscuro) 100%);
}

.uts-step-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--uts-verde) 0%, var(--uts-verde-lima) 100%);
    color: var(--uts-blanco);
    font-size: 1.5rem;
    font-weight: 700;
}

.uts-title-underline {
    position: relative;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.uts-title-underline::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--uts-verde-lima) 0%, var(--uts-verde) 100%);
}

/* --------------------------------------------------------------------------
   11. Tables and empty states
   -------------------------------------------------------------------------- */
.uts-table thead th {
    background-color: var(--uts-azul);
    color: var(--uts-blanco);
    border-color: var(--uts-azul);
    font-weight: 600;
    white-space: nowrap;
}

.uts-table tbody tr:hover {
    background-color: rgba(var(--uts-primary-rgb), 0.04);
}

.uts-empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: #6c757d;
}

.uts-empty-state i {
    display: block;
    font-size: 3rem;
    color: var(--uts-gris);
    margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   12. Utilities
   -------------------------------------------------------------------------- */
.bg-uts-primary { background-color: var(--uts-azul) !important; }
.text-uts-primary { color: var(--uts-azul) !important; }
.bg-uts-lima { background-color: var(--uts-verde-lima) !important; }
.text-uts-lima { color: var(--uts-verde-lima) !important; }
.border-uts { border-color: var(--uts-azul) !important; }
.uts-shadow { box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important; }