@import url('https://fonts.googleapis.com/css2?family=Anton&family=Inter:wght@400;600;700&display=swap');

:root {
    --black: #000000;
    --white: #ffffff;
    --accent: #ff3333; /* Rojo activista */
    --highlight: #ffe600; /* Amarillo marcador */
    --border-width: 3px;
    --shadow-offset: 4px;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--black);
    line-height: 1.5;
    background-color: var(--white);
    overflow-x: hidden; /* Previene scroll horizontal por animaciones */
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Anton', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--black);
    margin-bottom: 1.5rem;
}

/* --- ANIMACIÓN DE SUBRAYADO --- */
.scroll-underline {
    background-image: linear-gradient(120deg, var(--highlight) 0%, var(--highlight) 100%);
    background-repeat: no-repeat;
    background-size: 0% 40%; /* Empieza invisible (ancho 0) */
    background-position: 0 85%; /* Posición en la parte inferior del texto */
    transition: background-size 1s cubic-bezier(0.25, 1, 0.5, 1);
    display: inline;
    padding: 0 5px; /* Un poco de aire lateral */
}

.scroll-underline.active {
    background-size: 100% 40%; /* Se expande al 100% */
}

/* Variante roja para títulos muy importantes */
.scroll-underline-red {
    background-image: linear-gradient(120deg, var(--accent) 0%, var(--accent) 100%);
    background-size: 0% 15%; /* Más fino */
    background-position: 0 90%;
}

.scroll-underline-red.active {
    background-size: 100% 15%;
}


/* --- NAVBAR & LOGO --- */
.navbar {
    border-bottom: var(--border-width) solid var(--black);
    padding: 1.5rem 0;
    background-color: var(--white);
    transition: padding 0.3s;
}

.navbar-brand {
    font-family: 'Anton', sans-serif;
    font-size: 2rem;
    padding: 0;
    line-height: 1;
    display: flex;
    align-items: center;
    border: none;
    background: transparent;
    box-shadow: none;
    transform: none;
    text-decoration: none;
}

.navbar-brand:hover {
    transform: none;
}

.brand-text {
    color: var(--black);
    padding-right: 5px;
}

.brand-accent {
    background-color: #ff0000;
    color: var(--white);
    padding: 2px 8px;
    display: inline-block;
}

.nav-link {
    font-weight: 700;
    text-transform: uppercase;
    color: var(--black) !important;
    border: 2px solid transparent;
    margin-left: 10px;
    position: relative;
}

/* Animación hover navbar estilo StopFosilak (línea que aparece) */
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 0;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

/* --- BOTONES --- */
.btn {
    border-radius: 0 !important;
    border: var(--border-width) solid var(--black);
    font-family: 'Anton', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 12px 30px;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--black);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--white);
    border-color: var(--black);
}

.btn-primary:hover {
    background-color: var(--black);
    color: var(--white);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--black);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-light:hover {
    background-color: var(--white);
    color: var(--black);
    border-color: var(--white);
}

/* --- HERO SECTION --- */
.hero-section {
    background-color: var(--black);
    color: var(--white);
    padding: 140px 0;
    border-bottom: var(--border-width) solid var(--black);
    /* Patrón de puntos sutil para textura */
    background-image: radial-gradient(#333 1px, transparent 1px);
    background-size: 20px 20px;
}

.hero-section h1 {
    font-size: 5.5rem;
    line-height: 0.9;
    color: var(--white);
    margin-bottom: 2rem;
}

/* --- ICONOS SVG --- */
.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
    color: var(--accent);
    stroke-width: 1.5;
}

/* --- TARJETAS --- */
.card {
    border: var(--border-width) solid var(--black);
    border-radius: 0;
    box-shadow: none; /* Quitamos sombra por defecto para estilo más plano al principio */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    background-color: var(--white);
    padding: 2rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 8px 8px 0 var(--black); /* Sombra dura al hover */
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    border: none;
    background: none;
    padding: 0;
    display: block;
}

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

.section-title {
    font-size: 3.5rem;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
}

/* --- FOOTER --- */
footer {
    background-color: var(--white);
    color: var(--black);
    border-top: var(--border-width) solid var(--black);
    padding: 80px 0;
}

footer h5 {
    background-color: transparent;
    color: var(--black);
    padding: 0;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
    padding-bottom: 5px;
    margin-bottom: 20px;
}

footer a {
    color: var(--black);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--accent);
    background: none;
}

/* Utilidades */
.badge {
    border-radius: 0;
    border: 1px solid var(--black);
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}