/* =========================================================
   Tokens de diseño
   ========================================================= */
:root {
    /* Identidad institucional: verde y naranja tomados del logo oficial del
       plantel (TEC de Teziutlán / ITST); azul tomado del logo del TecNM
       (red nacional), usado como color de apoyo. */
    --navy:       #287848; /* antes azul marino genérico; ahora verde ITST */
    --navy-osc:   #1C5432;
    --accent:     #F05838; /* naranja/coral del emblema azteca del logo ITST */
    --accent-osc: #CC4B30;
    --green:      #059669;
    --ink:        #1E293B;
    --muted:      #64748B;
    --border:     #E2E8F0;
    --surface:    #FFFFFF;
    --bg:         #F1F4FA;

    /* Azul del TecNM (logo de la red nacional) — uso de apoyo, no protagonista. */
    --tecnm-nacional:     #203878;
    --tecnm-nacional-osc: #162651;

    /* aliases para no romper componentes existentes */
    --tecnm-azul:     #287848;
    --tecnm-azul-osc: #1C5432;
    --tecnm-acento:   #b58a2e;
    --tecnm-verde:    #059669;
    --tecnm-celeste:  #1a8db5;
    --tecnm-naranja:  #E8622A;
    --grad-hero:      linear-gradient(135deg, #1C5432 0%, #287848 55%, #F05838 100%);
}

html { font-size: 15px; scroll-behavior: smooth; }
body {
    font-family: 'Poppins', 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--ink);
}
h1, h2, h3 {
    font-family: 'Space Grotesk', 'Poppins', sans-serif;
    font-weight: 700;
}
h4, h5, h6 { font-weight: 700; }

/* =========================================================
   Navbar
   ========================================================= */
.navbar-tecnm {
    background: var(--navy);
    border-bottom: 3px solid var(--accent);
}
.navbar-tecnm .navbar-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: .2px;
    font-size: 1.05rem;
}
.navbar-tecnm .nav-link {
    font-size: .875rem;
    font-weight: 500;
    padding: .45rem .75rem;
    border-radius: 6px;
    transition: background .18s;
}
.navbar-tecnm .nav-link:hover,
.navbar-tecnm .nav-link.active { background: rgba(255,255,255,.12); }
.footer-tecnm { background: var(--navy-osc); }

/* Pastilla blanca para logos con texto de color que se perderían sobre
   los fondos de marca (verde institucional); evita distorsión con
   object-fit: contain y solo fija el alto, nunca alto+ancho a la vez. */
.navbar-logo-chip,
.footer-logo-chip {
    background: #fff;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
}
.navbar-logo-chip {
    padding: .3rem .55rem;
}
.navbar-logo-chip img {
    height: 24px;
    width: auto;
    object-fit: contain;
    display: block;
}
.footer-logo-chip {
    padding: .35rem .65rem;
}
.footer-logo-chip img {
    height: 26px;
    width: auto;
    object-fit: contain;
    display: block;
}

/* =========================================================
   Botones
   ========================================================= */
.btn-tecnm {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    transition: all .18s;
}
.btn-tecnm:hover {
    background: var(--accent-osc);
    border-color: var(--accent-osc);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(42,106,232,.35);
}
.btn-outline-tecnm {
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
    border-radius: 8px;
    transition: all .18s;
}
.btn-outline-tecnm:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-1px);
}

/* =========================================================
   Cards generales
   ========================================================= */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 8px rgba(0,0,0,.06);
    transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: 0 4px 18px rgba(0,0,0,.1); }
.card-header {
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    background: transparent;
    border-radius: 12px 12px 0 0 !important;
}

/* =========================================================
   Textos y colores utilitarios
   ========================================================= */
.text-tecnm  { color: var(--navy) !important; }
.text-verde   { color: var(--green) !important; }
.bg-tecnm     { background: var(--navy) !important; }
.bg-tecnm-grad { background: linear-gradient(135deg, var(--navy) 0%, var(--accent) 100%) !important; }

/* =========================================================
   Estadísticas (admin)
   ========================================================= */
.stat-card {
    border-left: 4px solid var(--navy);
    border-radius: 12px !important;
}
.stat-card .stat-num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--navy);
    line-height: 1.1;
}
.stat-card.verde   { border-color: var(--tecnm-verde);   }
.stat-card.celeste { border-color: var(--tecnm-celeste); }
.stat-card.naranja { border-color: var(--tecnm-naranja); }
.stat-card.acento  { border-color: var(--tecnm-acento);  }
.stat-card.verde   .stat-num { color: var(--tecnm-verde);   }
.stat-card.celeste .stat-num { color: var(--tecnm-celeste); }
.stat-card.naranja .stat-num { color: var(--tecnm-naranja); }
.stat-card.acento  .stat-num { color: var(--tecnm-acento);  }

/* =========================================================
   Tablas
   ========================================================= */
.table thead th {
    background: #EEF2FB;
    color: var(--navy);
    font-weight: 700;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .5px;
}
.table-hover tbody tr:hover { background: #F0F4FD; }

/* =========================================================
   Barra de carrera
   ========================================================= */
.barra-carrera {
    height: 8px;
    border-radius: 99px;
    background: #dee2e6;
    overflow: hidden;
}
.barra-carrera-fill {
    height: 100%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--navy), var(--accent));
    transition: width .6s ease;
}

/* =========================================================
   Hero — landing estudiantil
   ========================================================= */
.hero-tecnico {
    background: var(--grad-hero);
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    color: #fff;
    padding: 3.8rem 2.8rem;
    margin-bottom: 2rem;
}
/* dot grid de plano técnico */
.hero-tecnico::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.14) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}
/* franja de acento izquierda */
.hero-tecnico::after {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--accent);
}
.hero-tecnico > .row { position: relative; z-index: 1; }

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,.5);
    margin-bottom: 1rem;
}
.hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.hero-titulo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.9rem, 4.5vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -.5px;
    margin-bottom: 1rem;
}
.hero-titulo .hl { color: var(--accent); }

.hero-sub {
    font-size: .97rem;
    line-height: 1.7;
    color: rgba(255,255,255,.68);
    max-width: 440px;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: .95rem;
    padding: .72rem 1.6rem;
    border-radius: 8px;
    text-decoration: none;
    border: none;
    transition: background .18s, transform .15s, box-shadow .18s;
}
.btn-hero-primary:hover {
    background: var(--accent-osc);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42,106,232,.42);
}
.btn-hero-ghost {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: transparent;
    color: rgba(255,255,255,.7);
    font-weight: 500;
    font-size: .95rem;
    padding: .72rem 1.2rem;
    border-radius: 8px;
    text-decoration: none;
    border: 1.5px solid rgba(255,255,255,.22);
    transition: all .18s;
}
.btn-hero-ghost:hover {
    color: #fff;
    border-color: rgba(255,255,255,.5);
    background: rgba(255,255,255,.07);
}

.hero-carrusel {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 4 / 3.2;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.14);
}
.hero-carrusel .carousel-inner,
.hero-carrusel .carousel-item {
    height: 100%;
}
.hero-carrusel .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-carrusel-indicadores {
    margin-bottom: .7rem;
}
.hero-carrusel-indicadores [data-bs-target] {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255,255,255,.5);
    border: none;
    opacity: 1;
}
.hero-carrusel-indicadores .active {
    background-color: #fff;
}

/* =========================================================
   Tarjetas de paso (proceso del alumno)
   ========================================================= */
.paso-card {
    border-radius: 12px;
    background: var(--surface);
    overflow: hidden;
    transition: box-shadow .2s, transform .2s;
}
.paso-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,.1);
    transform: translateY(-3px);
}
.paso-acento {
    height: 3px;
    background: var(--accent);
}
.paso-label {
    display: block;
    font-size: .67rem;
    font-weight: 600;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .6rem;
}
.paso-icono {
    font-size: 1.85rem;
    color: var(--accent);
    margin-bottom: .4rem;
}
.paso-titulo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: .93rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: .2rem;
}

/* =========================================================
   Chips de funcionalidad (landing)
   ========================================================= */
.feature-chip {
    display: flex;
    align-items: flex-start;
    gap: .9rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.1rem;
    transition: box-shadow .18s, transform .18s;
}
.feature-chip:hover {
    box-shadow: 0 6px 18px rgba(0,0,0,.07);
    transform: translateY(-2px);
}
.feature-chip-icon {
    width: 42px; height: 42px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.paso-card .paso-acento { background: var(--paso-color, var(--accent)); }

/* =========================================================
   CTA final
   ========================================================= */
.cta-final {
    background: var(--navy);
    border-radius: 18px;
    color: #fff;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}
.cta-final::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.1) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}
.cta-final > * { position: relative; z-index: 1; }

/* =========================================================
   Login — split layout
   ========================================================= */
.login-split {
    display: flex;
    max-width: 760px;
    margin: 3rem auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 44px rgba(0,0,0,.15);
}
.login-brand {
    width: 260px;
    flex-shrink: 0;
    background: var(--navy);
    padding: 2.75rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.login-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.1) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
}
.login-brand > * { position: relative; z-index: 1; }
.login-brand-icon {
    font-size: 2.8rem;
    color: var(--accent);
    margin-bottom: 1rem;
    display: block;
}
.login-brand-logo {
    width: 100%;
    max-width: 220px;
    height: auto;
    object-fit: contain;
    margin-bottom: 1.4rem;
    filter: drop-shadow(0 4px 14px rgba(0,0,0,.25));
}
.login-brand-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: .6rem;
    letter-spacing: -.2px;
}
.login-brand-sub {
    font-size: .78rem;
    color: rgba(255,255,255,.45);
    line-height: 1.6;
    margin: 0;
}
.login-brand-line {
    display: block;
    width: 32px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 1.25rem;
}

.login-form-panel {
    flex: 1;
    background: var(--surface);
    padding: 2.75rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.login-form-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: .2rem;
}
.login-form-sub {
    font-size: .85rem;
    color: var(--muted);
    margin-bottom: 1.75rem;
}

.login-field { margin-bottom: 1.5rem; }
.login-label {
    display: block;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .35rem;
}
.login-input {
    display: block;
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border);
    border-radius: 0;
    padding: .45rem 0 .45rem 0;
    font-size: .97rem;
    color: var(--ink);
    font-family: inherit;
    transition: border-color .18s;
    outline: none;
}
.login-input:focus { border-bottom-color: var(--accent); }
.login-input::placeholder { color: #C0C8D6; }

.btn-login-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    width: 100%;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: .95rem;
    padding: .75rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background .18s, transform .15s, box-shadow .18s;
    margin-top: .25rem;
    font-family: inherit;
}
.btn-login-submit:hover {
    background: var(--accent-osc);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(42,106,232,.35);
}

.login-hint {
    font-size: .77rem;
    color: var(--muted);
    background: #F8FAFD;
    border-radius: 8px;
    padding: .7rem .9rem;
    border-left: 3px solid var(--border);
    margin-top: 1.25rem;
}
.login-hint p { margin: 0 0 .2rem; }
.login-hint p:last-child { margin-bottom: 0; }

@media (max-width: 600px) {
    .login-split { flex-direction: column; margin: 1rem; border-radius: 16px; }
    .login-brand { width: 100%; padding: 1.75rem 1.5rem; }
    .login-form-panel { padding: 1.75rem 1.5rem; }
}

/* =========================================================
   Páginas de estado (404, acceso denegado, error)
   ========================================================= */
.pagina-estado {
    max-width: 540px;
    margin: 3.5rem auto;
    padding: 2.5rem 2rem;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 18px rgba(0,0,0,.08);
}
.pagina-estado .estado-codigo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 5.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 2px;
    color: var(--navy);
}
.pagina-estado .estado-icono { font-size: 3rem; }

/* =========================================================
   Badges de estatus
   ========================================================= */
.badge-estatus-1 { background-color: #6c757d; }
.badge-estatus-2 { background-color: #0d6efd; }
.badge-estatus-3 { background-color: #198754; }

.badge-solicitud-Borrador         { background-color: #6c757d; }
.badge-solicitud-EnRevision       { background-color: #0d6efd; }
.badge-solicitud-Aprobada         { background-color: #198754; }
.badge-solicitud-ConObservaciones { background-color: #dc3545; }

.badge-doc-Pendiente  { background-color: #6c757d; }
.badge-doc-Autorizado { background-color: #198754; }
.badge-doc-Rechazado  { background-color: #dc3545; }

/* =========================================================
   Etapas bloqueadas
   ========================================================= */
.opacity-75 { opacity: .75; }

/* =========================================================
   Semáforo de días restantes
   ========================================================= */
.semaforo-wrap   { display: inline-flex; align-items: center; gap: .45rem; }
.semaforo-dot    { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
.semaforo-dot-lg { width: 22px; height: 22px; }
.s-verde    { background: #198754; }
.s-amarillo { background: #ffc107; }
.s-naranja  { background: #fd7e14; }
.s-rojo     { background: #dc3545; }
.s-gris     { background: #adb5bd; }
.s-negro    { background: #343a40; }

@keyframes semaforo-pulso {
    0%, 100% { opacity: 1;   transform: scale(1); }
    50%       { opacity: .3; transform: scale(.8); }
}
.semaforo-pulso { animation: semaforo-pulso .85s ease-in-out infinite; }

.dias-num { font-size: 2.4rem; font-weight: 800; line-height: 1; }

.alerta-cronograma { border-left: 5px solid; border-radius: .5rem; }
.alerta-cronograma.urgente { border-color: #fd7e14; background: #fff8f5; }
.alerta-cronograma.critica { border-color: #dc3545; background: #fff5f5; }
.alerta-cronograma.vencida { border-color: #343a40; background: #f8f8f8; }