/* ============================================
   CICTAI 2026 — UNTELS
   Sistema de Diseño Premium
   ============================================ */

/* --- Variables --- */
:root {
    --untels-blue: #002B5B;
    --untels-blue-dark: #001a3a;
    --untels-blue-light: #003d7a;
    --untels-gold: #FFD700;
    --untels-gold-soft: #fff9db;
    --untels-gold-dark: #e6c200;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-600: #6c757d;
    --shadow-sm: 0 2px 8px rgba(0, 43, 91, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 43, 91, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 43, 91, 0.18);
    --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Montserrat', sans-serif;
    overflow-x: hidden;
    color: #1a1a2e;
    line-height: 1.7;
    background: #fff;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
}

/* --- Utility Classes --- */
.text-gold {
    color: var(--untels-gold);
}

.text-blue {
    color: var(--untels-blue);
}

.bg-blue {
    background-color: var(--untels-blue);
}

.fw-800 {
    font-weight: 800;
}

.bg-gold-light {
    background-color: var(--untels-gold-soft);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-12px);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% center;
    }

    100% {
        background-position: 200% center;
    }
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    background: rgba(0, 43, 91, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 3px solid var(--untels-gold);
    padding: 12px 0;
    transition: var(--transition);
    z-index: 1000;
}

.navbar.scrolled {
    background: rgba(0, 43, 91, 1);
    padding: 8px 0;
    box-shadow: var(--shadow-lg);
}

.navbar-brand span {
    font-size: 1.8rem;
    letter-spacing: 1.5px;
}

.navbar-logo-cictai {
    height: 44px;
    width: auto;
    object-fit: contain;
    background: var(--untels-blue-dark);
    border-radius: 8px;
    padding: 4px 12px;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    margin: 0 6px;
    padding: 8px 16px !important;
    font-size: 0.82rem;
    letter-spacing: 1.5px;
    position: relative;
    transition: var(--transition);
    border-radius: 6px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--untels-gold);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--untels-gold) !important;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(0, 26, 58, 0.88) 0%, rgba(0, 43, 91, 0.85) 50%, rgba(0, 61, 122, 0.88) 100%),
        url('../img/hero-bg-campus.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 60px 20px 30px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255, 215, 0, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 215, 0, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

/* Logo principal CICTAI en hero (reemplaza el título) */
.hero-logo-wrapper {
    position: relative;
    display: inline-block;
    margin: 1.5rem auto 2rem;
}

.hero-main-logo {
    max-width: 1600px;
    width: 100%;
    height: auto;
    object-fit: contain;
    background: transparent;
    /* Logo ya viene en blanco sobre fondo transparente — solo drop-shadow y brillo */
    filter: brightness(1.1) drop-shadow(0 4px 20px rgba(255, 215, 0, 0.2));
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    transform: scale(1.4) scaleX(1.15) translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    animation: logoFloat 5s ease-in-out infinite, logoFadeIn 1.2s ease-out both;
    transition: filter 0.5s ease, transform 0.5s ease;
    cursor: default;
}

.hero-main-logo:hover {
    filter: brightness(1.2) drop-shadow(0 6px 30px rgba(255, 215, 0, 0.4));
    transform: scale(1.45) scaleX(1.15) translateZ(0);
}

/* Glow pulsante detrás del logo */
.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 70%;
    background: radial-gradient(ellipse, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: glowPulse 4s ease-in-out infinite;
    z-index: -1;
}

@keyframes logoFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes logoFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes glowPulse {

    0%,
    100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.15);
    }
}

/* Logo UNTELS en hero */
.hero-untels-logo {
    display: flex;
    justify-content: center;
}

.untels-logo-hero {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    padding: 5px;
    border: 2px solid var(--untels-gold);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* Nota de modalidad */
.modality-note {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.78rem;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Partículas decorativas */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 215, 0, 0.4);
    border-radius: 50%;
    animation: particleFloat linear infinite;
}

.particle:nth-child(1) {
    left: 10%;
    animation-duration: 12s;
    animation-delay: 0s;
    width: 4px;
    height: 4px;
}

.particle:nth-child(2) {
    left: 25%;
    animation-duration: 15s;
    animation-delay: 2s;
    width: 6px;
    height: 6px;
}

.particle:nth-child(3) {
    left: 40%;
    animation-duration: 10s;
    animation-delay: 4s;
    width: 3px;
    height: 3px;
}

.particle:nth-child(4) {
    left: 55%;
    animation-duration: 18s;
    animation-delay: 1s;
    width: 5px;
    height: 5px;
}

.particle:nth-child(5) {
    left: 70%;
    animation-duration: 13s;
    animation-delay: 3s;
    width: 4px;
    height: 4px;
}

.particle:nth-child(6) {
    left: 85%;
    animation-duration: 16s;
    animation-delay: 5s;
    width: 7px;
    height: 7px;
}

.particle:nth-child(7) {
    left: 15%;
    animation-duration: 14s;
    animation-delay: 6s;
    width: 3px;
    height: 3px;
}

.particle:nth-child(8) {
    left: 60%;
    animation-duration: 11s;
    animation-delay: 2s;
    width: 5px;
    height: 5px;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 22px;
    border: 1px solid rgba(255, 215, 0, 0.5);
    border-radius: 50px;
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--untels-gold);
    background: rgba(255, 215, 0, 0.08);
    margin-bottom: 8px;
}

.hero h1 {
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.2rem;
    margin-top: 0.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero .subtitle {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 300;
    font-style: italic;
    opacity: 0.9;
    max-width: 650px;
    margin: 0 auto 1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Countdown */
.countdown-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin: 1rem 0;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    min-width: 80px;
    text-align: center;
}

.countdown-item .number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--untels-gold);
    line-height: 1;
}

.countdown-item .label {
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 4px;
}

/* Hero Buttons */
.btn-gold {
    background: linear-gradient(135deg, var(--untels-gold), var(--untels-gold-dark));
    color: var(--untels-blue);
    border: none;
    font-weight: 700;
    border-radius: 50px;
    padding: 14px 36px;
    transition: var(--transition);
    box-shadow: var(--shadow-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-gold:hover {
    background: linear-gradient(135deg, #ffe44d, var(--untels-gold));
    color: var(--untels-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.4);
}

.btn-outline-gold {
    border: 2px solid var(--untels-gold);
    color: var(--untels-gold);
    background: transparent;
    border-radius: 50px;
    padding: 12px 36px;
    font-weight: 600;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-outline-gold:hover {
    background: var(--untels-gold);
    color: var(--untels-blue);
    transform: translateY(-3px);
}

.btn-blue {
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    color: white;
    border: none;
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition);
}

.btn-blue:hover {
    background: linear-gradient(135deg, var(--untels-blue-light), var(--untels-blue));
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   SECTION TITLES
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header .badge-label {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--untels-gold);
    background: rgba(255, 215, 0, 0.1);
    padding: 6px 20px;
    border-radius: 50px;
    margin-bottom: 14px;
    font-weight: 600;
}

.section-header h2 {
    color: var(--untels-blue);
    font-weight: 800;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-header .divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--untels-gold), var(--untels-gold-dark));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* Light section variant */
.section-light .section-header .badge-label {
    background: rgba(0, 43, 91, 0.08);
    color: var(--untels-blue);
}

/* Dark section variant */
.section-dark .section-header h2 {
    color: #fff;
}

.section-dark .section-header .badge-label {
    background: rgba(255, 215, 0, 0.15);
    color: var(--untels-gold);
}

/* ============================================
   AUTORIDADES
   ============================================ */
.autoridad-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 2.5rem 1.5rem 2rem;
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.autoridad-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--untels-blue), var(--untels-gold));
}

.autoridad-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 215, 0, 0.3);
}

.autoridad-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
    font-size: 2rem;
    color: var(--untels-gold);
    border: 3px solid var(--untels-gold);
}

.autoridad-card .cargo {
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--untels-gold-dark);
    font-weight: 700;
    margin-bottom: 8px;
}

.autoridad-card .nombre {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--untels-blue);
    font-size: 1rem;
    line-height: 1.4;
}

/* ============================================
   COMITÉ ORGANIZADOR
   ============================================ */
.comite-card {
    background: linear-gradient(135deg, #fff 0%, var(--untels-gold-soft) 100%);
    border: 2px solid var(--untels-gold);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.comite-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-gold);
}

.comite-card .icon-role {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--untels-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--untels-gold);
}

.comite-card .cargo {
    font-size: 0.75rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--untels-gold-dark);
    font-weight: 700;
}

.comite-card .nombre {
    font-weight: 700;
    color: var(--untels-blue);
    font-size: 1.15rem;
    margin-top: 6px;
}

/* ============================================
   EJES TEMÁTICOS
   ============================================ */
.card-eje {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: var(--radius);
    padding: 2rem 1.2rem;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: default;
}

.card-eje:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--untels-gold);
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(255, 215, 0, 0.15);
}

.card-eje .eje-number {
    font-size: 0.65rem;
    letter-spacing: 3px;
    color: var(--untels-gold);
    font-weight: 700;
    opacity: 0.7;
}

.card-eje .eje-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 215, 0, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--untels-gold);
    margin-bottom: 4px;
    transition: var(--transition);
}

.card-eje:hover .eje-icon {
    background: var(--untels-gold);
    color: var(--untels-blue);
    transform: scale(1.1);
}

.card-eje .eje-name {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

/* ============================================
   RECURSOS CIENTÍFICOS
   ============================================ */
.recurso-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    height: 100%;
}

.recurso-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--untels-gold);
}

.recurso-card .recurso-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--untels-gold);
}

.recurso-card h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--untels-blue);
    margin-bottom: 6px;
}

.recurso-card p {
    font-size: 0.88rem;
    color: var(--gray-600);
    margin-bottom: 10px;
}

.recurso-card .btn-recurso {
    font-size: 0.8rem;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

/* ============================================
   FORMULARIO DE INSCRIPCIÓN
   ============================================ */
.form-registro {
    background: #fff;
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.form-registro .form-control,
.form-registro .form-select {
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-registro .form-control:focus,
.form-registro .form-select:focus {
    border-color: var(--untels-gold);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.15);
}

.form-registro .form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--untels-blue);
    margin-bottom: 6px;
}

.pago-info {
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    border-radius: var(--radius);
    padding: 2rem;
    color: white;
}

.pago-info .precio {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--untels-gold);
}

.pago-info .precio-label {
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.8;
}

.easychair-box {
    background: var(--untels-gold-soft);
    border: 2px solid var(--untels-gold);
    border-radius: var(--radius);
    padding: 1.8rem;
    text-align: center;
}

.easychair-box h5 {
    color: var(--untels-blue);
    font-weight: 700;
}

/* ============================================
   SECTOR 1: REGISTRO — PASARELA DE PAGO
   ============================================ */
.section-registro {
    background: var(--gray-50);
}

.sector-label {
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    color: var(--untels-gold);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 8px 20px;
    border-radius: 50px;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.payment-gateway {
    border: 2px solid var(--gray-100);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    transition: var(--transition);
}

.payment-gateway:hover {
    border-color: var(--untels-gold);
    box-shadow: var(--shadow-sm);
}

.payment-header {
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    color: #fff;
    padding: 14px 20px;
    font-size: 0.88rem;
    font-weight: 600;
}

.payment-body {
    padding: 1.5rem;
}

.payment-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-payment {
    flex: 1;
    min-width: 180px;
    padding: 14px 24px;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-yape {
    background: linear-gradient(135deg, #74006e, #9c0095);
    color: #fff;
}

.btn-yape:hover {
    background: linear-gradient(135deg, #9c0095, #74006e);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(116, 0, 110, 0.35);
}

.btn-visa {
    background: linear-gradient(135deg, #1434CB, #2140e6);
    color: #fff;
}

.btn-visa:hover {
    background: linear-gradient(135deg, #2140e6, #1434CB);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(20, 52, 203, 0.35);
}

.btn-pagoefectivo {
    background: linear-gradient(135deg, #FFC107, #FF9800);
    color: #000;
}

.btn-pagoefectivo:hover {
    background: linear-gradient(135deg, #FF9800, #FFC107);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 152, 0, 0.35);
}

/* Formularios Desplegables de Pago */
.payment-dropdown {
    animation: fadeInDown 0.3s ease-out;
}

.payment-card {
    background: #f8f9fa;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 1.2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.yape-card {
    border-left: 4px solid #9c0095;
}

.visa-card {
    border-left: 4px solid #1434CB;
}

.payment-note {
    background: var(--untels-gold-soft);
    border-left: 4px solid var(--untels-gold);
    padding: 10px 16px;
    font-size: 0.82rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: #333;
}

.payment-success {
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    border: 2px solid #4caf50;
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    color: #2e7d32;
    animation: fadeInUp 0.5s ease-out;
}

.payment-success i { color: #4caf50; }
.payment-success h5 { font-weight: 800; margin-bottom: 0.5rem; }
.payment-success p { font-size: 0.88rem; margin-bottom: 1rem; }

.voucher-code {
    display: inline-block;
    background: #fff;
    border: 2px dashed #4caf50;
    padding: 10px 28px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: 2px;
    color: var(--untels-blue);
}

/* ============================================
   ALERTA LLAMATIVA DE ASISTENCIA (SECTOR 1)
   ============================================ */
.alert-flexible {
    background: linear-gradient(135deg, #ff8f00 0%, #e65100 100%);
    border-radius: var(--radius);
    padding: 2.2rem 2.5rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 2rem;
    box-shadow: 0 12px 35px rgba(230, 81, 0, 0.35);
    position: relative;
    overflow: hidden;
    border: 3px solid #ffca28;
}

.alert-flexible::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.alert-flexible-icon {
    font-size: 4rem;
    color: #fff;
    min-width: 80px;
    text-align: center;
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.3));
}

.alert-flexible-content {
    position: relative;
    z-index: 2;
}

.alert-flexible-content h4 {
    font-size: 1.35rem;
    font-weight: 900;
    margin-bottom: 0.6rem;
    letter-spacing: 0.5px;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.alert-flexible-content p {
    font-size: 0.98rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
    opacity: 0.95;
}

.flexible-badge {
    background: #fff !important;
    color: #e65100 !important;
    font-weight: 800;
    font-size: 0.8rem;
    padding: 6px 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 50px;
}

@media (max-width: 768px) {
    .alert-flexible {
        flex-direction: column;
        text-align: center;
        padding: 1.8rem 1.5rem;
        gap: 1rem;
    }
    .alert-flexible-icon {
        font-size: 3rem;
    }
}

/* ============================================
   SECTOR 2: VALIDACIÓN
   ============================================ */
.section-validacion {
    background: linear-gradient(180deg, #f0f4f8 0%, var(--gray-50) 100%);
}

.validacion-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 3rem 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.validacion-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--untels-blue), var(--untels-gold), var(--untels-blue));
}

.validacion-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--untels-blue), var(--untels-blue-light));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--untels-gold);
    box-shadow: 0 8px 25px rgba(0, 43, 91, 0.25);
}

.validacion-desc {
    font-size: 0.9rem;
    color: var(--gray-600);
    max-width: 420px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.validacion-card .form-label {
    text-align: left;
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--untels-blue);
}

.validacion-card .form-control {
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    transition: var(--transition);
}

.validacion-card .form-control:focus {
    border-color: var(--untels-gold);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.15);
}

/* ============================================
   SECTOR 3: FLEXIBILIDAD DE ASISTENCIA
   ============================================ */
.section-asistencia {
    background: linear-gradient(135deg, var(--untels-blue) 0%, var(--untels-blue-dark) 100%);
    color: #fff;
}

.section-asistencia .section-header h2 { color: #fff; }
.section-asistencia .section-header .badge-label {
    background: rgba(255, 215, 0, 0.15);
    color: var(--untels-gold);
}

.asistencia-intro {
    font-size: 1.05rem;
    line-height: 1.8;
    opacity: 0.92;
    color: rgba(255,255,255,0.9);
}

.asistencia-card {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.asistencia-card:hover {
    background: rgba(255, 255, 255, 0.13);
    border-color: var(--untels-gold);
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(255, 215, 0, 0.15);
}

.asistencia-check {
    font-size: 2.2rem;
    color: var(--untels-gold);
    margin-bottom: 4px;
}

.asistencia-card h5 {
    font-weight: 800;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 4px;
}

.asistencia-card p {
    font-size: 0.88rem;
    opacity: 0.85;
    margin-bottom: 8px;
    line-height: 1.5;
}

.asistencia-badge {
    display: inline-block;
    background: rgba(255, 215, 0, 0.15);
    border: 1px solid rgba(255, 215, 0, 0.4);
    color: var(--untels-gold);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 16px;
    border-radius: 50px;
}

.asistencia-cierre {
    background: linear-gradient(135deg, var(--untels-gold), var(--untels-gold-dark));
    color: var(--untels-blue);
    font-weight: 700;
    font-size: 1.05rem;
    padding: 1.2rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-gold);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: linear-gradient(180deg, var(--untels-blue-dark) 0%, #000d1a 100%);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 0;
}

.footer h5 {
    color: var(--untels-gold);
    font-size: 1rem;
    letter-spacing: 1px;
    margin-bottom: 1.2rem;
    font-weight: 700;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer a:hover {
    color: var(--untels-gold);
}

.footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    margin-top: 3rem;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer .social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
    margin-right: 8px;
    transition: var(--transition);
}

.footer .social-link:hover {
    background: var(--untels-gold);
    border-color: var(--untels-gold);
    color: var(--untels-blue);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 991px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .countdown-wrapper {
        gap: 10px;
    }

    .countdown-item {
        padding: 12px 14px;
        min-width: 65px;
    }

    .countdown-item .number {
        font-size: 1.5rem;
    }
}

@media (max-width: 767px) {
    .hero {
        min-height: 100vh;
        background-attachment: scroll;
        padding: 90px 16px 40px;
    }

    .hero-content {
        padding: 0 8px;
    }

    .hero h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    .hero .subtitle {
        font-size: 0.95rem;
    }

    .hero-badge {
        padding: 8px 18px;
        font-size: 0.75rem;
        letter-spacing: 1px;
    }

    .untels-logo-hero {
        width: 60px;
        height: 60px;
    }

    .hero-main-logo {
        max-width: 95%;
    }

    .countdown-wrapper {
        flex-wrap: wrap;
        gap: 8px;
    }

    .countdown-item {
        min-width: 60px;
        padding: 10px;
    }

    .countdown-item .number {
        font-size: 1.3rem;
    }

    .btn-gold,
    .btn-outline-gold {
        padding: 12px 24px;
        font-size: 0.8rem;
    }

    section {
        padding: 3rem 0 !important;
    }

    .form-registro {
        padding: 1.5rem;
    }
}