/* ========== RESET ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: #0a0a0a;
    color: #e8e8e8;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
ul { list-style: none; }

/* ========== TIPOGRAFÍA ========== */
h1, h2, h3, h4 {
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}
h1 { font-size: clamp(2.5rem, 7vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
.big-title { font-size: clamp(3rem, 9vw, 7rem); }
.lead { font-size: 1.15rem; color: #a0a0a0; max-width: 60ch; }

/* ========== LAYOUT ========== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}
section { padding: 8rem 0; position: relative; }
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}
.center { text-align: center; }

/* ========== HEADER ========== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1.25rem 0;
    background: rgba(10, 10, 10, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: padding 0.3s;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-weight: 900;
    letter-spacing: 0.15em;
    font-size: 1.2rem;
}
.main-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}
.main-nav a {
    font-size: 0.9rem;
    color: #b0b0b0;
    transition: color 0.3s;
}
.main-nav a:hover { color: #fff; }
.btn-contacto {
    padding: 0.5rem 1.25rem;
    border: 1px solid #fff;
    border-radius: 999px;
    color: #fff !important;
    transition: background 0.3s, color 0.3s;
}
.btn-contacto:hover { background: #fff; color: #0a0a0a !important; }
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ========== BOTONES ========== */
.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: #fff;
    color: #0a0a0a;
    border-radius: 999px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.15);
}
.btn-secondary {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: 1px solid #444;
    border-radius: 999px;
    color: #e8e8e8;
    transition: background 0.3s, border-color 0.3s;
    font-size: 0.9rem;
}
.btn-secondary:hover { background: #1a1a1a; border-color: #666; }
.link-arrow {
    display: inline-block;
    color: #fff;
    border-bottom: 1px solid #444;
    padding-bottom: 2px;
    transition: border-color 0.3s, color 0.3s;
}
.link-arrow:hover { border-color: #fff; }

/* ========== HERO ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    padding-bottom: 4rem;
}
.hero-kicker {
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 2rem;
}
.section-num {
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 2rem;
}
.hero-title {
    margin-bottom: 2rem;
    overflow: hidden;
}
.hero-title .line {
    display: block;
    overflow: hidden;
}
.hero-title .muted { color: #555; }
.hero-sub {
    font-size: 1.15rem;
    color: #a0a0a0;
    max-width: 55ch;
    margin-bottom: 2.5rem;
}
.hero-tag {
    margin-top: 3.5rem;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    color: #444;
    text-transform: uppercase;
}

/* ========== NOSOTROS / SERVICIOS / TECNOLOGÍA ========== */
.nosotros,
.servicios,
.tecnologia,
.proyectos-home,
.proyectos-lista {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.servicios h2,
.tecnologia h2 { margin-bottom: 1.5rem; }
.servicios .lead,
.tecnologia .lead { margin-bottom: 3rem; }

.card-servicio {
    padding: 2.5rem 2rem;
    background: #111;
    border: 1px solid #1e1e1e;
    border-radius: 12px;
    transition: transform 0.4s ease, border-color 0.4s ease, background 0.4s ease;
    position: relative;
    overflow: hidden;
}
.card-servicio::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0; height: 1px;
    background: #fff;
    transition: width 0.6s ease;
}
.card-servicio:hover::before { width: 100%; }
.card-servicio:hover {
    transform: translateY(-6px);
    border-color: #333;
    background: #131313;
}
.card-servicio span {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
}
.card-servicio h3 { margin-bottom: 1rem; }
.card-servicio p { color: #888; font-size: 0.95rem; }

/* ========== PROYECTOS ========== */
.grid-proyectos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
}
.card-proyecto {
    background: #111;
    border: 1px solid #1e1e1e;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.4s ease, border-color 0.4s ease;
    display: block;
}
.card-proyecto:hover {
    transform: translateY(-8px);
    border-color: #333;
}
.card-img {
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #1a1a1a;
}
.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.card-proyecto:hover .card-img img { transform: scale(1.06); }
.placeholder-img {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
}
.card-info { padding: 1.75rem; }
.card-cat {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #666;
}
.card-info h3 { margin: 0.75rem 0; }
.card-info p { color: #888; font-size: 0.9rem; }

/* ========== FILTROS ========== */
.filtros {
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.filtros .container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.filtro {
    padding: 0.5rem 1.25rem;
    border: 1px solid #2a2a2a;
    border-radius: 999px;
    font-size: 0.85rem;
    color: #888;
    transition: all 0.3s ease;
}
.filtro:hover,
.filtro.active {
    background: #fff;
    color: #0a0a0a;
    border-color: #fff;
}

/* ========== PAGE HEADER ========== */
.page-header {
    padding-top: 12rem;
    padding-bottom: 4rem;
}
.page-header h1 { margin: 1rem 0 1.5rem; }

/* ========== DETALLE PROYECTO ========== */
.proyecto-hero {
    padding-top: 12rem;
    padding-bottom: 4rem;
}
.proyecto-hero h1 { margin: 1rem 0 1.5rem; }
.ubicacion { color: #888; margin-top: 1rem; }
.proyecto-imagen-principal { padding: 0; }
.proyecto-imagen-principal img {
    width: 100%;
    height: auto;
    max-height: 80vh;
    object-fit: cover;
}
.proyecto-contenido { padding: 6rem 0; }
.proyecto-galeria { padding: 4rem 0; }
.galeria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 3rem;
}
.galeria-grid img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.5s ease;
}
.galeria-grid img:hover { transform: scale(1.03); }
.proyecto-cta {
    padding: 6rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.proyecto-cta h2 { margin-bottom: 2rem; }

/* ========== FOOTER ========== */
.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 4rem 0 2rem;
    background: #080808;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-col h3 { margin-bottom: 1rem; font-size: 1.1rem; letter-spacing: 0.1em; }
.footer-col h4 {
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 1rem;
}
.footer-col p,
.footer-col a {
    color: #888;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: #555;
    font-size: 0.85rem;
}

/* ========== LOGIN ========== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #0a0a0a;
    padding: 2rem;
}
.login-form {
    background: #111;
    padding: 3rem;
    border-radius: 16px;
    border: 1px solid #1e1e1e;
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.login-form h1 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    letter-spacing: 0.1em;
}
.login-form input {
    padding: 0.9rem 1rem;
    background: #0a0a0a;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    color: #fff;
    transition: border-color 0.3s;
}
.login-form input:focus {
    outline: none;
    border-color: #666;
}
.login-form .btn-primary { margin-top: 0.5rem; width: 100%; }
.error {
    color: #ff5555;
    text-align: center;
    font-size: 0.9rem;
    padding: 0.75rem;
    background: rgba(255, 85, 85, 0.08);
    border: 1px solid rgba(255, 85, 85, 0.2);
    border-radius: 8px;
}

/* ========== ADMIN ========== */
.admin-page {
    background: #0a0a0a;
    min-height: 100vh;
    padding: 2rem;
}
.admin-container {
    max-width: 1100px;
    margin: 0 auto;
}
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #1e1e1e;
    flex-wrap: wrap;
    gap: 1rem;
}
.admin-header h1 { font-size: 1.6rem; }
.admin-header > div {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #888;
    font-size: 0.9rem;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: #111;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #1e1e1e;
}
.admin-table th,
.admin-table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid #1e1e1e;
    font-size: 0.9rem;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table th {
    background: #151515;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #888;
    font-weight: 600;
}
.admin-table tbody tr { transition: background 0.2s; }
.admin-table tbody tr:hover { background: #151515; }
.admin-table a { color: #5a9fff; transition: color 0.2s; }
.admin-table a:hover { color: #82b8ff; }
.admin-table a.danger { color: #ff5555; }
.admin-table a.danger:hover { color: #ff7777; }

.admin-form {
    background: #111;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #1e1e1e;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 700px;
    margin-top: 2rem;
}
.admin-form label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: #aaa;
    letter-spacing: 0.03em;
}
.admin-form input[type="text"],
.admin-form input[type="number"],
.admin-form textarea {
    padding: 0.8rem 1rem;
    background: #0a0a0a;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    color: #fff;
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.3s;
    resize: vertical;
}
.admin-form input:focus,
.admin-form textarea:focus {
    outline: none;
    border-color: #666;
}
.admin-form input[type="file"] {
    padding: 0.6rem;
    background: #0a0a0a;
    border: 1px dashed #333;
    border-radius: 8px;
    color: #888;
    font-size: 0.85rem;
    cursor: pointer;
}
.admin-form input[type="file"]:hover { border-color: #555; }
.admin-form .check {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}
.admin-form .check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #fff;
}
.admin-form .btn-primary {
    align-self: flex-start;
    margin-top: 1rem;
}
.preview-img {
    max-width: 200px;
    border-radius: 8px;
    margin-top: 0.5rem;
    border: 1px solid #2a2a2a;
}

/* ========== ANIMACIONES BASE (pre-GSAP) ========== */
.anim-fade,
.anim-card,
.anim-from-left,
.anim-from-right,
.anim-zoom {
    opacity: 0;
    will-change: transform, opacity;
}
html.no-js .anim-fade,
html.no-js .anim-card,
html.no-js .anim-from-left,
html.no-js .anim-from-right,
html.no-js .anim-zoom {
    opacity: 1;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
    .grid-2,
    .grid-3,
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    section { padding: 5rem 0; }
    .hero { padding-top: 7rem; min-height: auto; }
    .container { padding: 0 1.5rem; }
    .main-nav { display: none; }
    .menu-toggle { display: block; }
    .main-nav.open {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: #0a0a0a;
        padding: 2rem;
        border-bottom: 1px solid #1e1e1e;
        gap: 1.25rem;
    }
    .admin-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    .admin-form { padding: 1.5rem; }
    .admin-header h1 { font-size: 1.25rem; }
}

@media (max-width: 500px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.75rem; }
    .big-title { font-size: 2.5rem; }
    .btn-primary { padding: 0.85rem 1.75rem; font-size: 0.9rem; }
    .card-info { padding: 1.25rem; }
}