/* ═══════════════════════════════════════════════════════════════
   LAYOUT.CSS — Navigation, Header/Hero, Main, Footer, UI Elements
═══════════════════════════════════════════════════════════════ */

/* ===== ANNOUNCEMENT BAR ===== */
.announcement-bar {
    background: linear-gradient(90deg, var(--blue) 0%, #0050cc 50%, var(--blue) 100%);
    border-bottom: 2px solid rgba(212,160,23,0.4);
    color: white;
    padding: 0.65rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    flex-wrap: wrap;
    z-index: 1100;
}

.announcement-bar span { display: flex; align-items: center; gap: 0.5rem; }
.announcement-bar span i { color: var(--yellow); }

.ann-cta {
    background: var(--yellow);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.8rem;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}
.ann-cta:hover { background: white; color: var(--blue); transform: scale(1.05); }

.ann-close {
    background: none; border: none; color: rgba(255,255,255,0.6);
    font-size: 1rem; cursor: pointer; padding: 0.2rem 0.5rem;
    margin-left: auto; transition: color 0.2s;
}
.ann-close:hover { color: white; }

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed; bottom: 24px; right: 24px; z-index: 1000;
    background: #25D366; border-radius: 50%; padding: 12px;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    transition: var(--transition);
    display: flex; align-items: center; justify-content: center;
}
.whatsapp-float:hover, .whatsapp-float:focus {
    transform: scale(1.15) rotate(10deg);
    box-shadow: 0 8px 30px rgba(37,211,102,0.6);
}
.whatsapp-float img { display: block; }

/* ===== HERO (DARK, SPLIT LAYOUT) ===== */
header {
    min-height: 100vh;
    display: flex; flex-direction: column;
    align-items: stretch; justify-content: center;
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, #001233 0%, #00174f 40%, #001a3d 100%);
    padding: var(--space-lg) var(--space-lg) 5rem;
}

header::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url('estudiantes-marillac.png');
    background-size: cover; background-position: center;
    opacity: 0.08;
    pointer-events: none;
}

.hero-split {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-left {
    display: flex; flex-direction: column; gap: 1.5rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.9);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    width: fit-content;
}

.hero-badge-dot {
    width: 8px; height: 8px;
    background: var(--yellow);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--yellow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

header h1 {
    color: white;
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1px;
}
header h1 span { color: var(--yellow); }

header > .hero-split .hero-left > p {
    color: rgba(255,255,255,0.7);
    font-size: clamp(1rem, 2vw, 1.1rem);
    max-width: 480px;
    /* Selector específico — ver <p> dentro de .hero-left */
}

.hero-actions {
    display: flex; gap: 1rem; flex-wrap: wrap;
}

.hero-stats-strip {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255,255,255,0.12);
}

.hero-stat {
    display: flex; flex-direction: column;
    gap: 0.1rem;
}
.hero-stat strong {
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
}
.hero-stat strong span { color: var(--yellow); }
.hero-stat > span {
    color: rgba(255,255,255,0.55);
    font-size: 0.75rem;
}

.hero-stat-div {
    width: 1px; height: 36px;
    background: rgba(255,255,255,0.15);
}

/* Hero Right */
.hero-right {
    display: flex; justify-content: center; align-items: center;
}

.hero-photo-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
    max-width: 460px;
    width: 100%;
    aspect-ratio: 4/5;
}

.hero-photo-card img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: top;
    display: block;
}

.hero-photo-label {
    position: absolute;
    top: 16px; left: 16px;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(8px);
    color: white;
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    display: flex; align-items: center; gap: 0.4rem;
}
.hero-photo-label i { color: var(--yellow); }

.hero-quality-badge {
    position: absolute;
    bottom: 20px; left: 16px;
    background: var(--yellow);
    color: var(--text-dark);
    padding: 0.6rem 1rem;
    border-radius: 14px;
    display: flex; align-items: center; gap: 0.6rem;
    font-size: 0.8rem;
    box-shadow: 0 4px 20px rgba(212,160,23,0.4);
}
.hero-quality-badge i { font-size: 1rem; }
.hero-quality-badge strong { font-size: 0.85rem; font-weight: 700; display: block; line-height: 1.1; }
.hero-quality-badge small { font-size: 0.72rem; opacity: 0.75; }

/* Buttons */
.btn-primary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: var(--yellow); color: var(--text-dark);
    padding: 0.9rem 2rem; border-radius: 50px;
    font-weight: 700; font-size: 0.95rem; text-decoration: none;
    transition: var(--transition); box-shadow: var(--shadow-yellow);
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--yellow-dark); color: white;
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(212,160,23,0.4);
}

.btn-secondary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: transparent; color: white;
    padding: 0.9rem 2rem; border-radius: 50px;
    font-weight: 600; font-size: 0.95rem; text-decoration: none;
    border: 2px solid rgba(255,255,255,0.3);
    transition: var(--transition);
}
.btn-secondary:hover, .btn-secondary:focus {
    border-color: var(--yellow); color: var(--yellow);
    transform: translateY(-3px); background: rgba(212,160,23,0.08);
}

.scroll-indicator {
    position: absolute; bottom: 32px; left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.4); font-size: 1.4rem; text-decoration: none;
    animation: bounce 2s ease-in-out infinite;
    transition: color 0.3s; z-index: 2;
}
.scroll-indicator:hover { color: var(--yellow); }

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%       { transform: translateX(-50%) translateY(10px); }
}
@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== NAVIGATION (LIGHT) ===== */
nav {
    background: var(--blue);
    position: sticky; top: 0; z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,61,165,0.2);
    transition: background 0.3s ease, box-shadow 0.3s ease;
    display: flex; align-items: center;
}

nav.scrolled {
    background: white;
    box-shadow: 0 2px 20px rgba(0,0,0,0.10);
}

.nav-brand {
    padding: 0 1.5rem;
    flex-shrink: 0;
    display: flex; align-items: center;
}
.nav-logo-link {
    display: flex; align-items: center; gap: 0.5rem; text-decoration: none;
}
.nav-logo-img {
    height: 34px; width: auto;
}
.nav-logo {
    color: white;
    font-weight: 800;
    font-size: 1.1rem; letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.3s;
}
nav.scrolled .nav-logo { color: var(--blue); }

.nav-toggle {
    display: none; background: none; border: none;
    color: white; font-size: 1.8rem;
    padding: var(--space-sm); cursor: pointer;
    transition: var(--transition); margin-left: auto;
}
nav.scrolled .nav-toggle { color: var(--blue); }
.nav-toggle:hover { opacity: 0.7; }

nav ul {
    display: flex; justify-content: center;
    flex-wrap: wrap; list-style: none; flex: 1;
}

nav a {
    display: flex; align-items: center; gap: 0.4rem;
    padding: var(--space-sm) 0.9rem;
    color: rgba(255,255,255,0.85);
    text-decoration: none; font-weight: 500; font-size: 0.85rem;
    transition: var(--transition); position: relative;
}
nav.scrolled a { color: var(--text-body); }
nav a i { font-size: 0.75rem; opacity: 0.75; }

nav a::after {
    content: ''; position: absolute; bottom: 0; left: 50%;
    width: 0; height: 3px; background: var(--yellow);
    border-radius: 2px 2px 0 0;
    transition: var(--transition); transform: translateX(-50%);
}
nav a:hover::after, nav a:focus::after, nav a.active::after { width: 70%; }
nav a:hover, nav a:focus, nav a.active { color: var(--yellow); }
nav.scrolled a:hover, nav.scrolled a:focus, nav.scrolled a.active { color: var(--blue); }
nav.scrolled a:hover::after, nav.scrolled a.active::after { background: var(--blue); }

.nav-tienda-btn {
    background: rgba(212,160,23,0.15) !important;
    border: 1px solid rgba(212,160,23,0.4) !important;
    border-radius: 20px;
    color: var(--yellow) !important;
    margin: 0.3rem 0.5rem;
    /* sobrescrive la herencia del nav base */
}
nav.scrolled .nav-tienda-btn { background: rgba(0,61,165,0.08) !important; border-color: var(--blue) !important; color: var(--blue) !important; }
.nav-tienda-btn:hover { background: var(--yellow) !important; color: var(--text-dark) !important; }
.nav-tienda-btn::after { display: none !important; }

.nav-portal-btn {
    background: rgba(255,255,255,0.1) !important;
    border: 1px solid rgba(255,255,255,0.2) !important;
    border-radius: 20px;
    color: rgba(255,255,255,0.8) !important;
    margin: 0.3rem 0.5rem;
    /* sobrescrive la herencia del nav base */
}
nav.scrolled .nav-portal-btn { background: rgba(0,61,165,0.06) !important; border-color: var(--border) !important; color: var(--text-muted) !important; }
.nav-portal-btn:hover { background: var(--blue) !important; color: white !important; }
.nav-portal-btn::after { display: none !important; }

/* ===== MAIN ===== */
main { max-width: 1200px; margin: 0 auto; padding: var(--space-md) var(--space-md) var(--space-xl); }

/* ===== SECTIONS (base — light theme) ===== */
section {
    scroll-margin-top: 72px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-xl) var(--space-lg);
    margin: var(--space-md) 0;
    box-shadow: var(--shadow);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
section:hover {
    border-color: rgba(0,61,165,0.12);
    box-shadow: var(--shadow-md);
}

section h2 {
    color: var(--text-dark);
    font-size: clamp(1.65rem, 3.5vw, 2.3rem);
    font-weight: 700; margin-bottom: var(--space-md);
    letter-spacing: -0.3px;
    line-height: 1.2;
}
section h2 i { color: var(--blue); font-size: 0.85em; margin-right: 0.35rem; }

.section-label {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: rgba(0,61,165,0.07);
    color: var(--blue);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem; font-weight: 600;
    margin-bottom: 0.75rem;
}

.section-subtitle {
    color: var(--text-muted); font-size: 1rem;
    margin-bottom: var(--space-lg); margin-top: -0.5rem;
}

section h3 { color: var(--text-dark); font-size: clamp(1.05rem, 2.5vw, 1.3rem); font-weight: 700; margin: var(--space-md) 0 var(--space-sm); }
section p, section ul li { color: var(--text-body); font-size: 1rem; line-height: 1.8; margin-bottom: var(--space-xs); }
section ul { list-style: none; }
section ul li { padding-left: var(--space-md); position: relative; margin-bottom: 0.4rem; }
section ul li::before {
    content: ''; position: absolute; left: 0; top: 50%;
    transform: translateY(-50%); width: 6px; height: 6px;
    background: var(--blue); border-radius: 50%;
}
section a { color: var(--blue); text-decoration: none; font-weight: 600; transition: var(--transition); }
section a:hover, section a:focus { color: var(--blue-light); text-decoration: underline; }

/* ===== FOOTER ===== */
footer {
    background: linear-gradient(135deg, #001233, #002060);
    color: white; padding: var(--space-xl) var(--space-md) var(--space-md);
    border-top: 3px solid rgba(255,193,7,0.45); position: relative; z-index: 1;
}
.footer-grid {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-lg);
}
footer h3 { color: var(--yellow); font-size: 1.25rem; font-weight: 700; margin-bottom: var(--space-sm); }
footer h4 { color: var(--yellow); font-size: 1rem; font-weight: 600; margin-bottom: var(--space-sm); }
footer p { color: rgba(255,255,255,0.65); font-size: 0.9rem; line-height: 1.7; }
footer ul { list-style: none; }
footer ul li { margin: 0.4rem 0; }
footer a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 0.4rem; }
footer a:hover, footer a:focus { color: var(--yellow); transform: translateX(4px); }
.social-links a i { font-size: 1rem; color: var(--blue-light); }
.social-links a:hover i { color: var(--yellow); }

.footer-badges { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.75rem; }
.footer-badges span {
    display: inline-flex; align-items: center; gap: 0.3rem;
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    padding: 0.25rem 0.7rem; border-radius: 15px;
    font-size: 0.75rem; color: rgba(255,255,255,0.6);
}
.footer-badges span i { color: var(--yellow); font-size: 0.7rem; }

.footer-powered {
    display: flex; align-items: center; gap: 0.4rem;
    margin-top: 1rem; color: rgba(255,255,255,0.4); font-size: 0.78rem;
}
.footer-powered i { color: var(--blue-xlight); }
.footer-powered strong { color: var(--blue-xlight); }

.footer-bottom {
    max-width: 1200px; margin: var(--space-md) auto 0;
    padding-top: var(--space-md); border-top: 1px solid rgba(255,255,255,0.1);
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 0.5rem; font-size: 0.85rem; color: rgba(255,255,255,0.45);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed; bottom: 90px; right: 24px; width: 46px; height: 46px;
    border-radius: 50%; background: var(--blue); color: white;
    border: 2px solid rgba(255,193,7,0.35); font-size: 20px; cursor: pointer;
    opacity: 0; visibility: hidden; transition: var(--transition); z-index: 999;
    box-shadow: var(--shadow-blue); display: flex; align-items: center; justify-content: center;
}
.back-to-top:hover, .back-to-top:focus { background: var(--yellow); color: var(--blue); border-color: var(--yellow); transform: scale(1.1); }