/* ============================================================
   Acti Alumnos — paleta clara + acentos ITF
   ============================================================ */
:root {
    /* Fondos — slate más cálido y moderno */
    --acti-bg: #f5f7fa;
    --acti-surface: #ffffff;
    --acti-surface-2: #f7f9fc;
    --acti-border: #e6e9ef;
    --acti-border-strong: #d0d5dd;

    /* Tipografía — neutros (slate) más definidos */
    --acti-text: #0f172a;
    --acti-text-soft: #475569;
    --acti-text-mute: #94a3b8;

    /* Acentos — wine red moderno, menos saturado que el "ladrillo" anterior */
    --acti-red: #9f1239;       /* wine */
    --acti-red-hot: #be123c;   /* rose-700 */
    --acti-red-deep: #6e0b27;  /* burgundy */
    --acti-red-soft: #fef2f5;  /* casi blanco con un toque, en lugar del rosa fuerte */
    --acti-red-tint: #fde7ec;  /* tint sutil para hovers */

    /* Acento secundario — slate oscuro para hero/sidebar elegantes */
    --acti-ink: #0f172a;       /* slate-900 */
    --acti-ink-soft: #1e293b;  /* slate-800 */
    --acti-ink-mid: #334155;   /* slate-700 */

    /* Dorado para chips de logros — más sutil */
    --acti-gold: #b08313;
    --acti-gold-soft: #fef9e6;
    --acti-blue: #1d4ed8;

    /* Sidebar */
    --acti-sidebar-w: 280px;
    --acti-topbar-h: 72px;
    --acti-sidebar-bg: #ffffff;

    /* Forma */
    --acti-radius: 14px;
    --acti-radius-sm: 10px;
    --acti-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.03);
    --acti-shadow: 0 4px 12px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.04);
    --acti-shadow-lg: 0 12px 36px rgba(15, 23, 42, 0.10);

    /* Fonts */
    --acti-font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --acti-display: "Bebas Neue", "Inter", sans-serif;
}

* { box-sizing: border-box; }

html, body {
    background: var(--acti-bg);
    color: var(--acti-text);
    font-family: var(--acti-font);
    min-height: 100%;
}

body {
    margin: 0;
    /* Fondo limpio, sin tintes rosados/dorados. Apenas un wash slate. */
    background-image:
        radial-gradient(900px 700px at -10% -20%, rgba(15, 23, 42, 0.025), transparent 70%);
    background-attachment: fixed;
}

a { color: var(--acti-red); text-decoration: none; }
a:hover { color: var(--acti-red-deep); }

.acti-link-red { color: var(--acti-red); }
.acti-link-red:hover { color: var(--acti-red-deep); }
.acti-link-gold { color: var(--acti-gold); }
.acti-link-gold:hover { color: #8d6f10; }

/* ============================================================
   TOPBAR
   ============================================================ */
.acti-topbar {
    height: var(--acti-topbar-h);
    background: #ffffff;
    border-bottom: 1px solid var(--acti-border);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--acti-shadow-sm);
}

.acti-topbar__menu {
    color: var(--acti-text);
    font-size: 1.6rem;
    line-height: 1;
    padding: 4px 8px;
}

.acti-topbar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--acti-text);
    font-weight: 700;
}
.acti-topbar__brand:hover { color: var(--acti-text); }
.acti-topbar__brand img {
    height: 56px;
    width: 56px;
    border-radius: 0;
    object-fit: contain;
    background: transparent;
}
.acti-topbar__brand .acti-topbar__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}
.acti-topbar__brand .acti-topbar__brand-text .name {
    font-family: var(--acti-display);
    font-size: 1.25rem;
    letter-spacing: 0.06em;
    color: var(--acti-red);
}
.acti-topbar__brand .acti-topbar__brand-text .sub {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--acti-text-mute);
    margin-top: 2px;
}

.acti-topbar__right { margin-left: auto; }

/* ============================================================
   AVATAR
   ============================================================ */
.acti-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 0 1px var(--acti-border), 0 2px 6px rgba(15, 23, 42, 0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--acti-surface);
    flex-shrink: 0;
}
.acti-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.acti-avatar__fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--acti-red), var(--acti-red-deep));
}
.acti-avatar--lg { width: 64px; height: 64px; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.acti-sidebar {
    background: var(--acti-sidebar-bg);
    border-right: 1px solid var(--acti-border);
    color: var(--acti-text);
    display: flex;
    flex-direction: column;
    width: var(--acti-sidebar-w);
}

.acti-sidebar.offcanvas-lg {
    --bs-offcanvas-bg: var(--acti-sidebar-bg);
    --bs-offcanvas-color: var(--acti-text);
    --bs-offcanvas-width: var(--acti-sidebar-w);
    --bs-offcanvas-border-width: 0;
}

.acti-sidebar__header {
    padding: 20px 18px;
    background: var(--acti-surface);
    border-bottom: 1px solid var(--acti-border);
    display: flex;
    align-items: center;
    gap: 14px;
    position: relative;
}
.acti-sidebar__header::after {
    /* línea wine sutil al pie del header como acento */
    content: "";
    position: absolute; left: 18px; right: 18px; bottom: -1px;
    height: 2px;
    background: linear-gradient(90deg, var(--acti-red), transparent);
    border-radius: 1px;
    opacity: 0.5;
}

.acti-sidebar__user {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}
.acti-sidebar__user--btn {
    background: transparent;
    border: 0;
    padding: 6px 8px;
    margin: -6px -8px;
    border-radius: 10px;
    text-align: left;
    transition: background 120ms ease;
    width: 100%;
}
.acti-sidebar__user--btn:hover { background: var(--acti-surface-2); }
.acti-sidebar__user--btn::after { display: none; }  /* sin caret de bootstrap */
.acti-sidebar__chevron {
    margin-left: auto;
    font-size: 1.1rem;
    color: var(--acti-text-mute);
    transition: transform 200ms ease;
}
.acti-sidebar__user--btn[aria-expanded="true"] .acti-sidebar__chevron {
    transform: rotate(180deg);
    color: var(--acti-red);
}

/* ============================================================
   DROPDOWN DE CUENTAS
   ============================================================ */
.acti-account-menu {
    min-width: 260px;
    padding: 8px;
    border-radius: 12px;
    border: 1px solid var(--acti-border);
    box-shadow: var(--acti-shadow-lg);
}
.acti-account-menu__header {
    padding: 6px 10px 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--acti-text-mute);
    font-weight: 700;
}

.acti-account-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    background: transparent;
    border: 0;
    text-align: left;
    color: var(--acti-text);
    transition: background 120ms ease;
}
.acti-account-item:hover { background: var(--acti-surface-2); }
.acti-account-item.is-active { background: var(--acti-red-soft); }
.acti-account-item__meta { flex: 1; min-width: 0; }
.acti-account-item__name {
    font-weight: 600; font-size: 0.92rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.acti-account-item__role {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--acti-text-mute);
    font-weight: 600;
}
.acti-account-item.is-active .acti-account-item__role { color: var(--acti-red-deep); }
.acti-account-item__check { color: var(--acti-red); font-size: 1.15rem; }
.acti-account-item__switch { color: var(--acti-text-mute); font-size: 1rem; transition: transform 120ms ease, color 120ms ease; }
.acti-account-item:hover .acti-account-item__switch { color: var(--acti-red); transform: translateX(3px); }

/* Row con item + botón desasociar al lado */
.acti-account-item-row { display: flex; align-items: stretch; gap: 4px; }
.acti-account-item-form { flex: 1; min-width: 0; }
.acti-account-item-unlink { display: flex; }
.acti-account-item__unlink-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--acti-text-mute);
    border-radius: 8px;
    font-size: 1.05rem;
    transition: all 120ms ease;
}
.acti-account-item__unlink-btn:hover {
    background: var(--acti-red-soft);
    border-color: var(--acti-red-tint);
    color: var(--acti-red);
}

.acti-account-menu__action {
    display: flex; align-items: center; gap: 10px;
    width: 100%;
    padding: 10px 10px;
    border-radius: 8px;
    background: transparent;
    border: 0;
    text-align: left;
    color: var(--acti-text);
    font-weight: 500;
    font-size: 0.92rem;
    text-decoration: none;
    transition: background 120ms ease, color 120ms ease;
}
.acti-account-menu__action i { color: var(--acti-text-mute); font-size: 1.15rem; }
.acti-account-menu__action:hover { background: var(--acti-surface-2); color: var(--acti-text); }
.acti-account-menu__action:hover i { color: var(--acti-red); }
.acti-account-menu__action--danger { color: var(--acti-red); }
.acti-account-menu__action--danger i { color: var(--acti-red); }
.acti-account-menu__action--danger:hover { background: var(--acti-red-soft); color: var(--acti-red-deep); }
.acti-account-menu__action--danger:hover i { color: var(--acti-red-deep); }
.acti-sidebar__meta { min-width: 0; }
.acti-sidebar__name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--acti-text);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    max-width: 160px;
}
.acti-sidebar__role {
    font-size: 0.7rem;
    color: var(--acti-red);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.acti-sidebar__nav {
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
    flex: 1;
}

.acti-sidebar__divider {
    padding: 18px 12px 6px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--acti-text-mute);
    font-weight: 600;
}

.acti-sidebar__footer {
    padding: 12px 16px;
    border-top: 1px solid var(--acti-border);
    color: var(--acti-text-mute);
    font-size: 0.72rem;
    text-align: center;
}

.acti-navitem {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--acti-radius-sm);
    color: var(--acti-text-soft);
    border: 0;
    background: transparent;
    text-align: left;
    font-size: 0.94rem;
    font-weight: 500;
    width: 100%;
    transition: background-color 120ms ease, color 120ms ease, transform 120ms ease;
}
.acti-navitem i {
    font-size: 1.3rem;
    width: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--acti-text-mute);
    transition: color 120ms ease, transform 160ms ease;
    stroke-width: 1.75;
}
.acti-navitem:hover i { transform: scale(1.06); }
.acti-navitem:hover {
    background: var(--acti-surface-2);
    color: var(--acti-red);
}
.acti-navitem:hover i { color: var(--acti-red); }
.acti-navitem.active {
    background: var(--acti-red-soft);
    color: var(--acti-red-deep);
    border-left: 3px solid var(--acti-red);
    padding-left: 11px;
    font-weight: 600;
}
.acti-navitem.active i { color: var(--acti-red); }
.acti-navitem--danger { color: var(--acti-text-soft); }
.acti-navitem--danger:hover { background: var(--acti-red-tint); color: var(--acti-red-deep); }
.acti-navitem--danger i { color: var(--acti-text-mute); }
.acti-navitem--danger:hover i { color: var(--acti-red-deep); }

.acti-navitem--install {
    background: transparent;
    border: 1px dashed var(--acti-red);
    color: var(--acti-red);
    margin: 6px 8px;
    border-radius: 12px;
    width: calc(100% - 16px);
}
.acti-navitem--install i { color: var(--acti-red); }
.acti-navitem--install:hover {
    background: var(--acti-red);
    color: white;
    border-style: solid;
}
.acti-navitem--install:hover i { color: white; }

/* ============================================================
   MAIN
   ============================================================ */
.acti-main {
    min-height: calc(100vh - var(--acti-topbar-h));
    padding: 16px;
}

.acti-page {
    max-width: 1200px;
    margin: 0 auto;
}

/* Desktop: sidebar fijo */
@media (min-width: 992px) {
    .acti-topbar { padding-left: calc(var(--acti-sidebar-w) + 24px); }
    .acti-topbar__menu { display: none !important; }

    .acti-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: 1040;
        transform: none !important;
        visibility: visible !important;
        box-shadow: 1px 0 0 var(--acti-border);
    }

    .acti-main {
        margin-left: var(--acti-sidebar-w);
        padding: 28px 32px;
    }
}

/* ============================================================
   TARJETAS / COMPONENTES GENÉRICOS
   ============================================================ */
.acti-card {
    background: var(--acti-surface);
    border: 1px solid var(--acti-border);
    border-radius: var(--acti-radius);
    padding: 20px;
    color: var(--acti-text);
    box-shadow: var(--acti-shadow-sm);
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.acti-card:hover {
    transform: translateY(-2px);
    border-color: var(--acti-red);
    box-shadow: var(--acti-shadow);
}

.acti-hero {
    background: linear-gradient(135deg, #ffffff 0%, var(--acti-surface-2) 100%);
    border-radius: var(--acti-radius);
    color: var(--acti-text);
    padding: 32px 28px;
    margin-bottom: 24px;
    border: 1px solid var(--acti-border);
    box-shadow: var(--acti-shadow-sm);
    position: relative;
    overflow: hidden;
}
.acti-hero::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--acti-red);
}
.acti-hero h1 {
    font-family: var(--acti-display);
    font-size: clamp(1.8rem, 5vw, 3rem);
    letter-spacing: 0.04em;
    margin: 0 0 8px;
    color: var(--acti-text);
}
.acti-hero p {
    color: var(--acti-text-soft);
    margin: 0;
}

/* Variante con imagen de banner — para el Home */
.acti-hero--banner {
    background:
        linear-gradient(110deg,
            rgba(255, 255, 255, 0.95) 0%,
            rgba(255, 255, 255, 0.82) 45%,
            rgba(255, 255, 255, 0.45) 75%,
            rgba(255, 255, 255, 0.20) 100%),
        url('/images/banner.jpg') center/cover no-repeat;
    min-height: 200px;
    color: var(--acti-text);
}
.acti-hero--banner h1, .acti-hero--banner p {
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
}

.acti-section-title {
    font-family: var(--acti-display);
    letter-spacing: 0.08em;
    color: var(--acti-text);
    font-size: 1.4rem;
    margin: 28px 0 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.acti-section-title::before {
    content: "";
    width: 6px;
    height: 22px;
    background: var(--acti-red);
    border-radius: 2px;
}

/* ============================================================
   BOTONES
   ============================================================ */
.btn-acti-primary {
    background: linear-gradient(135deg, var(--acti-red-hot), var(--acti-red-deep));
    color: white;
    border: 0;
    padding: 12px 22px;
    border-radius: var(--acti-radius-sm);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.9rem;
    transition: transform 120ms ease, box-shadow 160ms ease;
    box-shadow: 0 4px 12px rgba(159, 18, 57, 0.22);
}
.btn-acti-primary:hover {
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(159, 18, 57, 0.30);
}
.btn-acti-primary:active { transform: translateY(0); }

.btn-acti-ghost {
    background: var(--acti-surface);
    color: var(--acti-text);
    border: 1px solid var(--acti-border-strong);
    padding: 12px 22px;
    border-radius: var(--acti-radius-sm);
    font-weight: 500;
    transition: all 120ms ease;
}
.btn-acti-ghost:hover {
    background: var(--acti-surface-2);
    border-color: var(--acti-red);
    color: var(--acti-red);
}

/* ============================================================
   FORMS
   ============================================================ */
.acti-form-card {
    background: var(--acti-surface);
    border: 1px solid var(--acti-border);
    border-radius: var(--acti-radius);
    padding: 28px 26px;
    color: var(--acti-text);
    box-shadow: var(--acti-shadow);
}

.acti-form-card label { color: var(--acti-text-soft); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.acti-form-card .form-control,
.acti-form-card .form-select {
    background: var(--acti-surface);
    border: 1px solid var(--acti-border-strong);
    color: var(--acti-text);
    padding: 12px 14px;
    border-radius: var(--acti-radius-sm);
}
.acti-form-card .form-control:focus,
.acti-form-card .form-select:focus {
    background: var(--acti-surface);
    border-color: var(--acti-red);
    color: var(--acti-text);
    box-shadow: 0 0 0 0.2rem rgba(196, 30, 42, 0.12);
}
.acti-form-card .form-control::placeholder { color: #b5bac4; }

.acti-form-card .input-group-text {
    background: var(--acti-surface-2);
    border: 1px solid var(--acti-border-strong);
    color: var(--acti-text-mute);
}
.acti-form-card .input-group-lg > .form-control {
    border-left: 0;
    padding-left: 8px;
}
.acti-form-card .btn-toggle-pwd {
    cursor: pointer;
    border-left: 0;
}
.acti-form-card .btn-toggle-pwd:hover { color: var(--acti-red); }

/* ============================================================
   SHELL ANÓNIMO (login, splash)
   ============================================================ */
.acti-shell-anon {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(1100px 700px at 50% -20%, rgba(196, 30, 42, 0.08), transparent 55%),
        radial-gradient(900px 600px at 50% 120%, rgba(199, 154, 31, 0.10), transparent 60%),
        linear-gradient(180deg, #ffffff 0%, var(--acti-bg) 100%);
}

.acti-login-wrap {
    width: 100%;
    max-width: 440px;
}
.acti-login-card { text-align: center; }
.acti-login-card__logo {
    width: 140px;
    height: 140px;
    margin: -10px auto 12px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.acti-login-card__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.acti-login-card__title {
    font-family: var(--acti-display);
    letter-spacing: 0.06em;
    font-size: 1.9rem;
    margin: 6px 0 4px;
    color: var(--acti-text);
}
.acti-login-card__tagline {
    color: var(--acti-text-mute);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 0.74rem;
    margin-bottom: 22px;
    font-weight: 500;
}
.acti-login-card__footer { margin-top: 18px; }

/* ============================================================
   UTILIDADES
   ============================================================ */
.acti-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    background: var(--acti-surface-2);
    border: 1px solid var(--acti-border);
    color: var(--acti-text-soft);
}
.acti-chip--red { background: var(--acti-red-soft); color: var(--acti-red-deep); border-color: var(--acti-red-tint); }
.acti-chip--gold { background: var(--acti-gold-soft); color: #92691a; border-color: #f0e0a7; }

/* Botón ícono unificado para listados (ver, editar, eliminar) */
.acti-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--acti-text-mute);
    font-size: 1.1rem;
    text-decoration: none;
    transition: all 120ms ease;
    margin-left: 2px;
}
.acti-icon-btn:hover {
    background: var(--acti-red-soft);
    border-color: var(--acti-red-tint);
    color: var(--acti-red);
}
.acti-icon-btn--danger:hover {
    background: var(--acti-red-soft);
    border-color: var(--acti-red);
    color: var(--acti-red-deep);
}

/* ============================================================
   PAGINADOR
   ============================================================ */
.acti-paginator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-top: 1px solid var(--acti-border);
    background: var(--acti-surface-2);
    border-bottom-left-radius: var(--acti-radius);
    border-bottom-right-radius: var(--acti-radius);
    flex-wrap: wrap;
}
.acti-paginator__info {
    font-size: 0.82rem;
    color: var(--acti-text-mute);
}
.acti-paginator__controls {
    display: flex;
    align-items: center;
    gap: 4px;
}
.acti-paginator__btn {
    width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--acti-surface);
    border: 1px solid var(--acti-border);
    color: var(--acti-text-soft);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 120ms ease;
}
.acti-paginator__btn:hover {
    background: var(--acti-red-soft);
    border-color: var(--acti-red);
    color: var(--acti-red-deep);
}
.acti-paginator__btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--acti-surface);
    color: var(--acti-text-mute);
}
.acti-paginator__page {
    padding: 0 12px;
    font-weight: 600;
    color: var(--acti-text);
    font-size: 0.88rem;
    min-width: 60px;
    text-align: center;
}