/* ========================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
======================================== */
:root {
    /* Paleta de colores - Amazonía institucional */
    --color-primary: #0B3B2E;        /* Verde profundo - logo, header, títulos */
    --color-secondary: #1C7A5A;      /* Verde/teal medio - botones secundarios */
    --color-accent: #C9A354;         /* Dorado apagado - acentos sutiles */
    --color-bg-light: #F5F7F6;       /* Gris muy claro - fondos alternos */
    --color-bg-white: #FFFFFF;       /* Blanco - fondos principales */
    --color-text-primary: #222222;   /* Texto principal */
    --color-text-secondary: #555555; /* Texto secundario */
    
    /* Tipografía */
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Tamaños de fuente */
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    
    /* Otros */
    --border-radius: 0.5rem;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}


/* ========================================
   RESET Y ESTILOS BASE
======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

ul {
    list-style: none;
}


/* ========================================
   CONTENEDOR PRINCIPAL
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}


/* ========================================
   NAVBAR / HEADER
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.navbar-brand {
    color: var(--color-bg-white);
    font-weight: 600;
    font-size: var(--font-size-md);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-md);
}

.navbar-link {
    color: var(--color-bg-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-decoration: none;
}

.navbar-link:hover {
    background-color: var(--color-secondary);
    color: var(--color-bg-white);
    text-decoration: none;
}

/* Hamburger button - hidden on desktop */
.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-bg-white);
    border-radius: 2px;
    transition: var(--transition);
}

/* Mobile styles */
@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-primary);
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        display: none;
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-link {
        padding: var(--spacing-sm);
        text-align: center;
    }
    
    .navbar-toggle.active .hamburger-line:nth-child(1) {
        transform: translateY(8.5px) rotate(45deg);
    }
    
    .navbar-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .navbar-toggle.active .hamburger-line:nth-child(3) {
        transform: translateY(-8.5px) rotate(-45deg);
    }
}


/* ========================================
   SECCIÓN HERO (INICIO)
======================================== */
.hero {
    padding-top: calc(60px + var(--spacing-xxl));
    padding-bottom: var(--spacing-xxl);
    background-color: var(--color-bg-white);
}

.hero-badge {
    display: inline-block;
    background-color: var(--color-bg-light);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 2rem;
    margin-bottom: var(--spacing-md);
    border-left: 3px solid var(--color-accent);
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
}

.hero-intro {
    max-width: 800px;
    margin-bottom: var(--spacing-xl);
}

.hero-intro p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
}

.hero-intro p:first-child {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Hero cards grid */
.hero-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.hero-card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-top: 3px solid var(--color-secondary);
    transition: var(--transition);
}

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

.hero-card-icon {
    display: inline-block;
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero-card h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.hero-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}


/* ========================================
   SECCIONES GENERALES
======================================== */
.section {
    padding: var(--spacing-xxl) 0;
}

.section-alt {
    background-color: var(--color-bg-light);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
    border-radius: 2px;
}


/* ========================================
   SECCIÓN NOSOTROS
======================================== */
.about-content {
    max-width: 800px;
}

.about-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.about-content strong {
    color: var(--color-text-primary);
}

/* Why IAIEG subsection */
.why-iaieg {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.why-iaieg-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.why-iaieg-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.why-card {
    background-color: var(--color-bg-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    position: relative;
    padding-left: calc(var(--spacing-md) + 4px);
}

.why-card-accent {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--color-accent);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.why-card p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.why-card strong {
    color: var(--color-text-primary);
}


/* ========================================
   SECCIÓN LÍNEAS DE INVESTIGACIÓN
======================================== */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.research-card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-secondary);
    transition: var(--transition);
}

.research-card:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-accent);
}

.research-card h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.research-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}


/* ========================================
   SECCIÓN EQUIPO
======================================== */
.team-intro {
    max-width: 800px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.team-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.team-photo {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background-color: var(--color-bg-light);
}

.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.team-info {
    padding: var(--spacing-lg);
}

.team-info h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.team-role {
    display: inline-block;
    background-color: var(--color-secondary);
    color: var(--color-bg-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    margin-bottom: var(--spacing-sm);
}

.team-info > p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.team-achievements {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.team-achievements li {
    position: relative;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
}

.team-achievements li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}


/* ========================================
   SECCIÓN CONTACTO
======================================== */
.contact-content {
    max-width: 700px;
}

.contact-intro h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-intro p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    background-color: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    font-size: var(--font-size-lg);
    line-height: 1;
}

.contact-item strong {
    color: var(--color-text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.contact-item a,
.contact-item span {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.contact-item a:hover {
    color: var(--color-secondary);
}

.contact-reasons {
    margin-bottom: var(--spacing-lg);
}

.contact-reasons h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-reasons ul {
    padding-left: var(--spacing-md);
}

.contact-reasons li {
    position: relative;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
}

.contact-reasons li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background-color: var(--color-secondary);
    border-radius: 50%;
}

.contact-button {
    display: inline-block;
    background-color: var(--color-secondary);
    color: var(--color-bg-white);
    font-size: var(--font-size-md);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
}

.contact-button:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}


/* ========================================
   FOOTER
======================================== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    font-size: var(--font-size-sm);
    line-height: 1.8;
    opacity: 0.9;
}

.footer-text strong {
    font-weight: 600;
}

.footer-year {
    display: inline-block;
    margin-top: var(--spacing-xs);
    opacity: 0.7;
}


/* ========================================
   RESPONSIVE ADJUSTMENTS
======================================== */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.75rem;
        --spacing-xxl: 3rem;
    }
    
    .hero {
        padding-top: calc(60px + var(--spacing-xl));
    }
    
    .hero-cards {
        grid-template-columns: 1fr;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .why-iaieg-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
        --spacing-lg: 1.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-badge {
        font-size: 0.75rem;
    }
    
    .team-photo {
        height: 240px;
    }
}


/* ========================================
   PRINT STYLES
======================================== */
@media print {
    .navbar {
        display: none;
    }
    
    .hero {
        padding-top: var(--spacing-lg);
    }
    
    .section {
        page-break-inside: avoid;
    }
    
    .team-card,
    .research-card {
        break-inside: avoid;
    }
}