/* =========================
   VARIABLES GENERALES
========================= */
:root {
    --azul-principal: #007bff;
    --azul-celeste: #00d4ff;
    --azul-oscuro: #020617;
    --azul-card: #071527;
    --blanco: #ffffff;
    --gris: #b7c3d0;
    --gris-claro: #eef6ff;
    --sombra: 0 20px 40px rgba(0, 212, 255, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--azul-oscuro);
    color: var(--blanco);
}

/* =========================
   HEADER
========================= */
.header {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.navbar {
    max-width: 1200px;
    margin: auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--blanco);
    font-weight: 700;
    letter-spacing: 1px;
}

.logo img {
    width: 48px;
    height: auto;
}

.menu {
    display: flex;
    list-style: none;
    gap: 28px;
}

.menu a {
    color: var(--gris);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.menu a:hover {
    color: var(--azul-celeste);
}

/* =========================
   HERO
========================= */
.hero {
    min-height: 100vh;
    padding: 140px 24px 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background:
        linear-gradient(rgba(2, 6, 23, 0.65), rgba(2, 6, 23, 0.95)),
        url("../img/hero.png");
    background-size: cover;
    background-position: center;
}

.hero-content {
    max-width: 900px;
}

.badge {
    display: inline-block;
    margin-bottom: 24px;
    padding: 10px 18px;
    border: 1px solid rgba(0, 212, 255, 0.4);
    border-radius: 30px;
    color: var(--azul-celeste);
    background: rgba(0, 212, 255, 0.08);
    font-size: 14px;
}

.hero h1 {
    font-size: clamp(38px, 6vw, 72px);
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 800;
}

.hero p {
    max-width: 720px;
    margin: 0 auto 34px;
    color: var(--gris);
    font-size: 18px;
    line-height: 1.7;
}

.btn-primary {
    display: inline-block;
    padding: 14px 34px;
    border-radius: 40px;
    background: linear-gradient(135deg, var(--azul-principal), var(--azul-celeste));
    color: var(--blanco);
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-weight: 700;
    box-shadow: var(--sombra);
    transition: 0.3s;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px rgba(0, 212, 255, 0.3);
}

/* =========================
   SECCIONES GENERALES
========================= */
.section {
    padding: 100px 24px;
    max-width: 1200px;
    margin: auto;
}

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

.section-title span {
    color: var(--azul-celeste);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title h2 {
    font-size: clamp(30px, 4vw, 46px);
    margin: 12px 0;
}

.section-title p {
    color: var(--gris);
}

/* =========================
   SERVICIOS
========================= */
.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.card {
    background: linear-gradient(180deg, #071527, #020617);
    padding: 34px 26px;
    border-radius: 22px;
    border: 1px solid rgba(0, 212, 255, 0.18);
    box-shadow: var(--sombra);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--azul-celeste);
}

.icon {
    font-size: 38px;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 14px;
    color: var(--blanco);
}

.card p {
    color: var(--gris);
    line-height: 1.7;
    font-size: 15px;
}

/* =========================
   TECNOLOGÍAS
========================= */
.dark-section {
    max-width: 100%;
    background: radial-gradient(circle at center, #073763, #020617 65%);
}

.tech-grid {
    max-width: 900px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.tech {
    padding: 24px;
    text-align: center;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.25);
    color: var(--blanco);
    font-weight: 700;
    transition: 0.3s;
}

.tech:hover {
    background: rgba(0, 212, 255, 0.15);
    transform: scale(1.04);
}

/* =========================
   CONTACTO
========================= */
.contacto {
    max-width: 800px;
}

.formulario {
    display: grid;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 18px;
    border-radius: 14px;
    border: 1px solid rgba(0, 212, 255, 0.25);
    outline: none;
    background: #071527;
    color: var(--blanco);
    font-family: inherit;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #7d8fa3;
}

/* =========================
   FOOTER
========================= */
.footer {
    padding: 34px 24px;
    text-align: center;
    background: #01040d;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer p {
    color: var(--gris);
    margin-bottom: 14px;
}

.social {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social a {
    color: var(--azul-celeste);
    text-decoration: none;
    font-weight: 600;
}

/* =========================
   RESPONSIVE TABLET
========================= */
@media (max-width: 992px) {
    .cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* =========================
   RESPONSIVE MÓVIL
========================= */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 18px;
    }

    .menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .hero {
        padding-top: 180px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .logo span {
        font-size: 14px;
    }
}