:root {
    --portal-bg: #f4f6fb;
    --portal-surface: #ffffff;
    --portal-border: #e5e9f2;
    --portal-text: #1e2433;
    --portal-text-muted: #6b7280;
    --portal-primary: #4f46e5;
    --portal-primary-dark: #4338ca;
    --portal-primary-soft: #eef2ff;
    --portal-danger: #dc2626;
    --portal-danger-soft: #fee2e2;
    --portal-success-soft: #dcfce7;
    --portal-success-text: #166534;
    --portal-sidebar-bg: #12142b;
    --portal-sidebar-text: #c7c9e0;
    --portal-radius: 14px;
    --portal-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

.portal-body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--portal-bg);
    color: var(--portal-text);
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; }

/* --- Layout shell --- */
.portal-shell {
    display: flex;
    min-height: 100vh;
}

.portal-sidebar {
    width: 250px;
    flex-shrink: 0;
    background: var(--portal-sidebar-bg);
    color: var(--portal-sidebar-text);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    position: sticky;
    top: 0;
    height: 100vh;
}

.portal-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 17px;
    color: #fff;
    padding: 0 8px 24px;
}

.portal-brand-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    padding: 2px;
}

.portal-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.portal-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 12px;
    border-radius: 10px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--portal-sidebar-text);
    transition: background .15s ease, color .15s ease;
}

.portal-nav-link:hover {
    background: rgba(255, 255, 255, .06);
    color: #fff;
}

.portal-nav-link.is-active {
    background: var(--portal-primary);
    color: #fff;
}

.portal-nav-icon { font-size: 16px; }

.portal-user {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 14px 12px;
    border-top: 1px solid rgba(255, 255, 255, .08);
}

.portal-user-name { font-size: 13.5px; font-weight: 600; color: #fff; }
.portal-user-role { font-size: 12px; color: var(--portal-sidebar-text); }

.portal-logout {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255, 255, 255, .06);
    font-size: 15px;
}

.portal-logout:hover { background: var(--portal-danger); color: #fff; }

.portal-main {
    flex: 1;
    padding: 32px 40px;
    max-width: 1180px;
}

/* --- Alerts --- */
.portal-alert {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}

.portal-alert-ok { background: var(--portal-success-soft); color: var(--portal-success-text); }
.portal-alert-error { background: var(--portal-danger-soft); color: var(--portal-danger); }

/* --- Header --- */
.portal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.portal-header h1 { margin: 0 0 4px; font-size: 24px; font-weight: 800; }
.portal-subtitle { margin: 0; color: var(--portal-text-muted); font-size: 14px; }

/* --- Buttons --- */
.portal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}

.portal-btn-primary { background: var(--portal-primary); color: #fff; }
.portal-btn-primary:hover { background: var(--portal-primary-dark); }

.portal-btn-ghost { background: var(--portal-surface); color: var(--portal-text); border-color: var(--portal-border); }
.portal-btn-ghost:hover { background: #f9fafb; }

.portal-btn-danger { background: var(--portal-danger-soft); color: var(--portal-danger); }
.portal-btn-danger:hover { background: #fecaca; }

.portal-btn-block { width: 100%; }
.portal-btn-sm { padding: 7px 12px; font-size: 13px; }

.portal-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    cursor: pointer;
    font-size: 14px;
}

.portal-icon-btn:hover { background: #f9fafb; }
.portal-inline-form { display: inline; }

/* --- Filters / forms --- */
.portal-filters, .portal-form {
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
    box-shadow: var(--portal-shadow);
}

.portal-form { flex-direction: column; max-width: 640px; }

.portal-filters-actions { display: flex; align-items: flex-end; gap: 10px; }

.portal-field { display: flex; flex-direction: column; gap: 6px; }
.portal-filters .portal-field { min-width: 180px; }

.portal-field label { font-size: 13px; font-weight: 600; color: var(--portal-text-muted); }

.portal-field input,
.portal-field textarea {
    padding: 10px 12px;
    border-radius: 9px;
    border: 1px solid var(--portal-border);
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    color: var(--portal-text);
}

.portal-field input:focus,
.portal-field textarea:focus {
    outline: none;
    border-color: var(--portal-primary);
    box-shadow: 0 0 0 3px var(--portal-primary-soft);
}

.portal-field-error { color: var(--portal-danger); font-size: 12.5px; font-weight: 500; }
.portal-field-hint { color: var(--portal-text-muted); font-size: 12.5px; }
.portal-field-hint code { background: var(--portal-bg); padding: 1px 6px; border-radius: 5px; }

.portal-url-feedback { font-size: 12.5px; font-weight: 600; min-height: 16px; }
.portal-url-feedback-ok { color: var(--portal-success-text); }
.portal-url-feedback-error { color: var(--portal-danger); }

.portal-url-preview { max-width: 320px; }

.portal-form-card {
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    padding: 28px;
    max-width: 680px;
    box-shadow: var(--portal-shadow);
}

.portal-form-card h1 { margin: 0 0 20px; font-size: 20px; font-weight: 800; }
.portal-form-actions { display: flex; gap: 10px; margin-top: 4px; }

/* --- Empty state --- */
.portal-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--portal-text-muted);
}

.portal-empty-icon { font-size: 40px; margin-bottom: 12px; }

/* --- Video grid / cards --- */
.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.portal-card {
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    overflow: hidden;
    box-shadow: var(--portal-shadow);
    display: flex;
    flex-direction: column;
}

.portal-card-thumb-link {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    background: #0f172a;
}

.portal-card-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.portal-card-thumb-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 30px;
}

.portal-card-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    background: rgba(15, 23, 42, 0);
    transition: background .15s ease;
}

.portal-card-thumb-link:hover .portal-card-play { background: rgba(15, 23, 42, .25); }

.portal-card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.portal-card-date { font-size: 12px; font-weight: 600; color: var(--portal-primary); text-transform: uppercase; letter-spacing: .02em; }
.portal-card-title { margin: 0; font-size: 16px; font-weight: 700; line-height: 1.35; }
.portal-card-title a:hover { color: var(--portal-primary); }
.portal-card-text { margin: 0; font-size: 13.5px; color: var(--portal-text-muted); line-height: 1.5; flex: 1; }
.portal-card-footer { display: flex; align-items: center; gap: 8px; margin-top: 8px; }

/* --- Ficha --- */
.portal-back { display: inline-block; margin-bottom: 18px; font-size: 14px; font-weight: 600; color: var(--portal-text-muted); }
.portal-back:hover { color: var(--portal-primary); }

.portal-ficha { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr); gap: 28px; align-items: start; }

.portal-video-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--portal-radius);
    overflow: hidden;
    background: #0f172a;
    box-shadow: var(--portal-shadow);
}

.portal-video-frame iframe,
.portal-video-frame img {
    width: 100%;
    height: 100%;
    border: 0;
    object-fit: cover;
}

.portal-video-frame-error { display: flex; align-items: center; justify-content: center; color: #94a3b8; font-size: 14px; }

.portal-ficha-video { display: flex; flex-direction: column; gap: 14px; }

.portal-ficha-info {
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    padding: 24px;
    box-shadow: var(--portal-shadow);
}

.portal-ficha-title { margin: 6px 0 14px; font-size: 21px; font-weight: 800; line-height: 1.3; }
.portal-ficha-text { color: var(--portal-text-muted); font-size: 14.5px; line-height: 1.6; white-space: pre-line; }
.portal-ficha-actions { display: flex; gap: 10px; margin-top: 18px; }

@media (max-width: 900px) {
    .portal-ficha { grid-template-columns: 1fr; }
}

/* --- Login --- */
.portal-login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, #4338ca, #12142b 55%);
    padding: 20px;
}

.portal-login-card {
    background: var(--portal-surface);
    border-radius: 18px;
    padding: 36px 32px;
    max-width: 380px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
}

.portal-login-logo {
    display: block;
    width: 96px;
    height: auto;
    margin: 0 auto 16px;
}

.portal-login-title { margin: 0 0 4px; font-size: 20px; font-weight: 800; }
.portal-login-subtitle { margin: 0 0 22px; color: var(--portal-text-muted); font-size: 13.5px; }
.portal-login-card .portal-form { text-align: left; box-shadow: none; border: none; padding: 0; margin: 0; }

/* --- Tabla de usuarios --- */
.portal-table-wrap {
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    overflow: auto;
    box-shadow: var(--portal-shadow);
}

.portal-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.portal-table th, .portal-table td { text-align: left; padding: 12px 20px; }
.portal-table th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--portal-text-muted); border-bottom: 1px solid var(--portal-border); }
.portal-table tbody tr:not(:last-child) td { border-bottom: 1px solid var(--portal-border); }

.portal-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: var(--portal-bg);
    color: var(--portal-text-muted);
}

.portal-badge-admin { background: var(--portal-primary-soft); color: var(--portal-primary-dark); }

.portal-radio-group { display: flex; gap: 18px; padding-top: 4px; }
.portal-radio { display: flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; cursor: pointer; }

@media (max-width: 780px) {
    .portal-sidebar { display: none; }
    .portal-main { padding: 20px; }
}