/* ============================================================
   lp.ai-baktor.com — Look & feel
   Basado en la identidad UMIN/Ibaktor (mismo lenguaje visual que
   umin.ai-baktor.com y registro.ai-baktor.com). Petición del cliente:
   "que sea como las de UMIN, y cuando es tono negro que sea como gris"
   -> por eso no hay negros puros: los tonos oscuros usan --gray-900
   en vez de #000, y el navy de marca se reserva para títulos.
   ============================================================ */

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

:root {
    --blue:        #2F80C2;
    --blue-dark:   #256fa8;
    --blue-dim:    rgba(47,128,194,.12);
    --navy:        #403866;
    --purple:      #827ffe;
    --purple-dim:  rgba(130,127,254,.15);
    --success:     #00C389;
    --success-dim: rgba(0,195,137,.12);
    --error:       #EF5127;
    --error-dim:   rgba(239,81,39,.12);
    --warn:        #FFB71B;

    /* Grises en vez de negro puro, por petición del cliente */
    --gray-900:    #3a3a3a;
    --gray-700:    #555555;
    --gray-400:    #999999;
    --gray-100:    #e6e6e6;
    --gray-50:     #f4f4f4;

    --border:      #d8d8e8;
    --card-bg:     #ffffff;
    --radius:      10px;
    --transition:  0.25s ease;
    --shadow:      0 8px 32px rgba(64,56,102,.14);
    --shadow-sm:   0 2px 10px rgba(64,56,102,.08);
    --max-width:   960px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Ubuntu', sans-serif;
    background: linear-gradient(140deg, #403866 0%, #2F80C2 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--gray-700);
    line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); }

/* ── Encabezado de marca (UVM izq. / Ibaktor der.) ─────────────────── */
.brand-header {
    background: var(--card-bg);
    border-bottom: 2px solid var(--gray-100);
    padding: 18px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand-header .logo-uvm img     { height: 34px; width: auto; }
.brand-header .logo-ibaktor img { height: 30px; width: auto; }

/* ── Layout general de página con card centrada ────────────────────── */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 0 60px;
}

.main-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 480px;
    overflow: hidden;
    margin-top: 40px;
}

.main-card.wide { max-width: var(--max-width); }

.card-body { padding: 36px 40px 40px; }

@media (max-width: 560px) {
    .brand-header { padding: 14px 18px; }
    .card-body    { padding: 26px 20px 30px; }
    .main-card    { margin-top: 20px; border-radius: 0; }
}

.section-label {
    font-weight: 700;
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 6px;
}

.section-title {
    font-weight: 700;
    font-size: 22px;
    color: var(--navy);
    margin-bottom: 6px;
}

.section-sub {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 26px;
    line-height: 1.5;
}

/* ── Formularios ─────────────────────────────────────────────────── */
.field { margin-bottom: 18px; }
.field label {
    display: block;
    font-weight: 500;
    font-size: 13px;
    color: var(--navy);
    margin-bottom: 6px;
}
.field input, .field select {
    width: 100%;
    height: 46px;
    border: 1px solid var(--border);
    background: var(--gray-50);
    border-radius: 6px;
    padding: 0 14px;
    font-family: inherit;
    font-size: 14px;
    color: var(--gray-900);
    transition: var(--transition);
}
.field input:focus, .field select:focus {
    outline: none;
    border-color: var(--blue);
    background: #fff;
    box-shadow: 0 0 0 3px var(--blue-dim);
}

.btn {
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: .05em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 50px;
    padding: 0 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.btn-block { width: 100%; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); box-shadow: 0 6px 20px rgba(47,128,194,.35); }
.btn-outline { background: #fff; color: var(--blue); border: 2px solid var(--blue); }
.btn-outline:hover { background: var(--blue-dim); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger  { background: var(--error); color: #fff; }
.btn-sm { height: 36px; padding: 0 14px; font-size: 12px; }

.alert {
    border-radius: 4px;
    padding: 12px 16px;
    font-size: 13px;
    margin-bottom: 20px;
    line-height: 1.5;
}
.alert-error   { border: 2px solid var(--error); background: var(--error-dim); color: var(--gray-900); }
.alert-success { border: 2px solid var(--success); background: var(--success-dim); color: var(--gray-900); }

/* ── Landing de programa ────────────────────────────────────────── */
.hero-banner {
    background: linear-gradient(120deg, var(--navy) 0%, var(--blue) 100%);
    color: #fff;
    padding: 44px 40px;
    text-align: center;
}
.hero-banner h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
}
.hero-banner p { font-size: 14px; opacity: .9; }

.landing-section {
    padding: 36px 40px;
    border-bottom: 1px solid var(--gray-100);
}
.landing-section:last-of-type { border-bottom: none; }
.landing-section h2 {
    font-size: 19px;
    color: var(--navy);
    font-weight: 700;
    margin-bottom: 14px;
}
.landing-section h3 {
    font-size: 15px;
    color: var(--navy);
    font-weight: 700;
    margin: 18px 0 8px;
}
.landing-section p { margin-bottom: 10px; font-size: 14px; }
.landing-section ul { padding-left: 20px; margin-bottom: 10px; font-size: 14px; }

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin: 16px 0;
}
@media (max-width: 600px) { .video-grid { grid-template-columns: 1fr; } }

.video-card { background: var(--gray-50); border-radius: 8px; overflow: hidden; }
.video-embed { position: relative; padding-top: 56.25%; background: var(--gray-900); }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-label { padding: 10px 14px; font-size: 13px; font-weight: 500; color: var(--navy); }

.link-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 12px;
}
@media (max-width: 600px) { .link-grid { grid-template-columns: 1fr; } }

.link-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--gray-50);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
.link-card:hover { border-color: var(--blue); background: var(--blue-dim); transform: translateY(-2px); }
.link-icon { font-size: 20px; flex-shrink: 0; }
.link-info-title { font-weight: 700; font-size: 13px; color: var(--navy); }
.link-info-sub { font-size: 12px; color: var(--gray-400); }

.plataforma-cta { text-align: center; padding: 30px 40px; background: var(--gray-50); }
.plataforma-cta img { max-width: 320px; margin: 0 auto 18px; }

.faq-item { border-bottom: 1px solid var(--gray-100); padding: 14px 0; }
.faq-item summary { font-weight: 500; color: var(--navy); cursor: pointer; }
.faq-item p { margin-top: 8px; }

.contact-strip {
    background: var(--gray-50);
    padding: 24px 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}
.contact-pill {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 8px 18px;
    font-size: 13px;
    color: var(--navy);
}

.page-footer-note {
    margin-top: 20px;
    font-size: 12px;
    color: rgba(255,255,255,.6);
    text-align: center;
}

.top-actions {
    display: flex;
    justify-content: flex-end;
    padding: 10px 40px 0;
}
.top-actions a { font-size: 13px; color: var(--gray-400); text-decoration: none; }
.top-actions a:hover { color: var(--navy); }

/* ── Utilidades de administración ──────────────────────────────── */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th, table.data-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-100);
    white-space: nowrap;
}
table.data-table th { color: var(--navy); font-weight: 700; background: var(--gray-50); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 700; }
.badge-ok   { background: var(--success-dim); color: #067a55; }
.badge-off  { background: var(--error-dim); color: var(--error); }
.badge-warn { background: rgba(255,183,27,.18); color: #8a6100; }

.admin-nav {
    display: flex;
    gap: 6px;
    padding: 0 40px;
    background: var(--card-bg);
    border-bottom: 2px solid var(--gray-100);
    flex-wrap: wrap;
}
.admin-nav a {
    display: block;
    padding: 14px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-400);
    text-decoration: none;
    border-bottom: 3px solid transparent;
}
.admin-nav a.active, .admin-nav a:hover { color: var(--navy); border-color: var(--blue); }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
@media (max-width: 800px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
.kpi-card { background: var(--gray-50); border-radius: 8px; padding: 18px 20px; }
.kpi-card .kpi-value { font-size: 26px; font-weight: 700; color: var(--navy); }
.kpi-card .kpi-label { font-size: 12px; color: var(--gray-400); text-transform: uppercase; letter-spacing: .05em; }

.filters-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.filters-bar input, .filters-bar select { height: 40px; border: 1px solid var(--border); border-radius: 6px; padding: 0 12px; font-family: inherit; font-size: 13px; }