/* ===== RESET & VARIABLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2c5f8a;
    --primary-dark: #1e4262;
    --primary-light: #4a8bc2;
    --accent: #f4a261;
    --accent-dark: #e76f51;
    --bg-light: #f8f9fc;
    --bg-white: #ffffff;
    --text-dark: #1a2332;
    --text-medium: #4a5568;
    --text-light: #718096;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
    font-family: 'Playfair Display', serif;
}

.logo i { font-size: 1.5rem; color: var(--accent); }

.nav-menu ul {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-medium);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(44,95,138,0.08);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 26px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e4262 0%, #2c5f8a 50%, #4a8bc2 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../img/hero-bg.jpg') center/cover no-repeat;
    opacity: 0.15;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(244,162,97,0.15), transparent 60%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding: 100px 24px 60px;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-title .highlight {
    color: var(--accent);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(244,162,97,0.3);
    border-radius: 4px;
    z-index: -1;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 24px rgba(244,162,97,0.4);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(244,162,97,0.5);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stat { text-align: center; }
.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}
.stat p {
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    z-index: 2;
}

/* ===== SECCIONES ===== */
.section { padding: 100px 0; }

.section-header { margin-bottom: 60px; }
.section-header.center { text-align: center; }

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(44,95,138,0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--text-dark);
    line-height: 1.25;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-medium);
    max-width: 650px;
    margin: 0 auto;
}

/* ===== INTRO ===== */
.intro { background: var(--bg-light); }

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text p {
    margin-bottom: 20px;
    color: var(--text-medium);
    font-size: 1.05rem;
}

.intro-list { margin-top: 24px; }
.intro-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-dark);
    font-weight: 500;
}
.intro-list i { color: var(--accent); font-size: 1.2rem; }

.intro-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}
.intro-image img:hover { transform: scale(1.02); }

/* ===== EQUIPO ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
}

.team-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.team-card:hover::before { transform: scaleX(1); }

.team-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    font-family: 'Playfair Display', serif;
}

.team-card h3 {
    font-size: 1.15rem;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.team-role {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(244,162,97,0.15);
    color: var(--accent-dark);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.team-ref {
    font-size: 0.88rem;
    color: var(--text-light);
    font-style: italic;
}

/* ===== FASES ===== */
.fases { background: var(--bg-light); }

.fases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.fase-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
}

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

.fase-img {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.fase-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(30,66,98,0.7), transparent);
}

.fase-num {
    position: absolute;
    top: 16px;
    left: 16px;
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    z-index: 2;
}

.fase-body { padding: 24px; }

.fase-body h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.fase-body p {
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-bottom: 16px;
}

.fase-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-completada { background: #d1fae5; color: #065f46; }
.status-actual { background: #fef3c7; color: #92400e; }
.status-pendiente { background: #e5e7eb; color: #4b5563; }

/* ===== FASE DESTACADA ===== */
.fase-destacada { background: #fff; }

.tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 28px;
    border: 2px solid var(--border);
    background: #fff;
    border-radius: 50px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-medium);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover { border-color: var(--primary-light); color: var(--primary); }

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(44,95,138,0.3);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}
.tab-content.active { display: block; }

/* Periodos */
.periodos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.periodo-card {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.periodo-card::before {
    content: attr(data-periodo);
    position: absolute;
    top: -20px;
    right: 10px;
    font-size: 8rem;
    font-weight: 700;
    font-family: 'Playfair Display', serif;
    color: rgba(44,95,138,0.06);
    line-height: 1;
}

.periodo-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.periodo-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.periodo-card h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 4px;
}

.periodo-card h4 {
    font-size: 0.95rem;
    color: var(--accent-dark);
    font-weight: 600;
    margin-bottom: 14px;
}

.periodo-card p {
    font-size: 0.92rem;
    color: var(--text-medium);
    margin-bottom: 16px;
}

.periodo-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(44,95,138,0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
}

/* Matrices */
.matrices-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.matriz-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.matriz-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.matriz-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.matriz-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.matriz-header h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 2px;
}

.matriz-header span {
    font-size: 0.82rem;
    color: var(--text-light);
}

.matriz-body p {
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-bottom: 10px;
}

.matriz-body strong { color: var(--text-dark); }

.matriz-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 8px 18px;
    background: rgba(44,95,138,0.08);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.matriz-download:hover {
    background: var(--primary);
    color: #fff;
}

/* Referentes */
.referentes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.referente-card {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 28px;
    border-left: 4px solid var(--accent);
    transition: var(--transition);
}

.referente-card:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
}

.referente-card h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.referente-card .autor {
    font-size: 0.88rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 10px;
}

.referente-card p {
    font-size: 0.88rem;
    color: var(--text-medium);
}

/* ===== CONCLUSIONES ===== */
.conclusiones { background: var(--bg-light); }

.conclusiones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.conclusion-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
}

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

.conclusion-card i {
    font-size: 2.2rem;
    color: var(--accent);
    margin-bottom: 18px;
}

.conclusion-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.conclusion-card p {
    font-size: 0.92rem;
    color: var(--text-medium);
}

/* ===== FOOTER ===== */
.footer {
    background: #1a2332;
    color: #cbd5e0;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-col h3 {
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 16px;
    font-family: 'Playfair Display', serif;
}
.footer-col h3 i { color: var(--accent); margin-right: 8px; }

.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-col p,
.footer-col li {
    font-size: 0.9rem;
    line-height: 1.9;
    color: #a0aec0;
}

.footer-col ul li a {
    transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: #718096;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-4px);
}

/* ===== ANIMACIONES ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-12px); }
    60% { transform: translateX(-50%) translateY(-6px); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .intro-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active { transform: translateY(0); }

    .nav-menu ul {
        flex-direction: column;
        padding: 20px;
        gap: 4px;
    }

    .nav-link { display: block; }

    .hero-stats { gap: 30px; }
    .stat-number { font-size: 2rem; }

    .section { padding: 70px 0; }

    .footer-content { grid-template-columns: 1fr; gap: 30px; }

    .tabs { flex-direction: column; align-items: center; }
    .tab-btn { width: 100%; max-width: 300px; }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-stats { flex-direction: column; gap: 20px; }
}