/* Landing pública ProyectosGU — paleta verde/tostado corporativa */
:root {
    --bg:        #f6f3ee;
    --bg-alt:    #fbfaf6;
    --bg-dark:   #f0ece2;
    --card:      #ffffff;
    --ink:       #1c1a17;
    --muted:     #8b8478;
    --line:      #e8e2d6;
    --accent:    #5b6c5d;
    --accent-d:  #455146;
    --accent-l:  #748b76;
    --accent-vl: #dfe6df;
    --terra:     #a8664c;
    --gold:      #c9a227;
    --red:       #c44545;
    --green:     #2a8f62;
    --shadow-sm: 0 2px 8px rgba(28,26,23,.05);
    --shadow:    0 8px 32px rgba(28,26,23,.08);
    --shadow-lg: 0 16px 48px rgba(28,26,23,.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--ink);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.55;
}
a { color: var(--accent-d); text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Topbar ---------- */
.topbar {
    background: rgba(246,243,238,.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
    position: sticky; top: 0; z-index: 20;
}
.topbar-inner { display: flex; align-items: center; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand-dot {
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--accent); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px; letter-spacing: -.02em;
}
.brand-name { font-size: 1rem; font-weight: 600; letter-spacing: -.01em; }
.brand-sub  { font-size: .74rem; color: var(--muted); }
.brand-by   { font-size: .78rem; font-weight: 400; color: var(--muted); margin-left: 4px; letter-spacing: 0; }

.top-nav { display: flex; gap: 4px; margin-left: auto; }
.top-nav a {
    padding: 8px 14px; border-radius: 8px;
    font-size: .9rem; font-weight: 500; color: var(--muted);
}
.top-nav a:hover { background: var(--bg-alt); color: var(--ink); }
.top-cta {
    background: var(--accent); color: #fff !important;
    padding: 9px 18px; border-radius: 8px;
    font-size: .88rem; font-weight: 500;
    display: inline-flex; align-items: center; gap: 6px;
    transition: background .15s, transform .15s;
}
.top-cta:hover { background: var(--accent-d); transform: translateY(-1px); }

/* ---------- HERO ---------- */
.hero {
    padding: 100px 0 80px;
    background:
        radial-gradient(circle at 20% 30%, rgba(91,108,93,.10) 0%, transparent 55%),
        radial-gradient(circle at 85% 70%, rgba(168,102,76,.08) 0%, transparent 55%),
        var(--bg);
    text-align: center;
}
.hero .eyebrow {
    display: inline-block;
    background: var(--accent-vl); color: var(--accent-d);
    font-size: .74rem; font-weight: 600;
    padding: 6px 14px; border-radius: 100px;
    letter-spacing: .08em; text-transform: uppercase;
    margin-bottom: 22px;
}
.hero h1 {
    font-size: clamp(2rem, 4.6vw, 3.4rem);
    font-weight: 700; margin: 0 0 20px;
    letter-spacing: -.028em; line-height: 1.08;
    max-width: 900px; margin-left: auto; margin-right: auto;
}
.hero h1 .accent { color: var(--accent-d); }
.hero p.lead {
    max-width: 720px; margin: 0 auto 34px;
    color: var(--muted); font-size: 1.1rem; line-height: 1.6;
}
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
    background: var(--accent); color: #fff !important;
    padding: 14px 28px; border-radius: 10px;
    font-size: .95rem; font-weight: 500;
    display: inline-flex; align-items: center; gap: 8px;
    transition: background .15s, transform .15s, box-shadow .15s;
}
.btn-primary:hover { background: var(--accent-d); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(69,81,70,.25); }
.btn-secondary {
    background: transparent; color: var(--ink) !important;
    padding: 14px 28px; border-radius: 10px;
    font-size: .95rem; font-weight: 500;
    border: 1px solid var(--line);
    display: inline-flex; align-items: center; gap: 8px;
    transition: background .15s, border-color .15s;
}
.btn-secondary:hover { background: var(--card); border-color: var(--accent-l); }

/* ---------- SECCIONES ---------- */
.section { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-eyebrow {
    display: inline-block;
    color: var(--accent-d); font-size: .78rem; font-weight: 600;
    letter-spacing: .1em; text-transform: uppercase; margin-bottom: 12px;
}
.section h2 {
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
    font-weight: 700; margin: 0 0 12px;
    letter-spacing: -.02em; line-height: 1.15;
}
.section p.sub {
    color: var(--muted); font-size: 1.02rem; margin: 0;
    max-width: 640px; margin-left: auto; margin-right: auto;
}

/* Sección alterna con fondo distinto */
.section.alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- QUÉ HACEMOS ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.service-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 28px 24px;
    transition: transform .18s, box-shadow .18s, border-color .18s;
}
.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--accent-l);
}
.service-card__icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--accent-vl); color: var(--accent-d);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.7rem;
    margin-bottom: 18px;
}
.service-card h3 { font-size: 1.08rem; font-weight: 600; margin: 0 0 8px; letter-spacing: -.01em; }
.service-card p  { color: var(--muted); font-size: .92rem; margin: 0; line-height: 1.55; }

/* ---------- CASOS DE ÉXITO (reutiliza cards del escaparate) ---------- */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.case-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
    display: flex; flex-direction: column;
    transition: transform .18s, box-shadow .18s, border-color .18s;
    color: inherit;
}
.case-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--accent-l);
    color: inherit;
}
.case-card__thumb {
    height: 130px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-l) 100%);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 2.8rem;
    position: relative;
}
.case-card__badge {
    position: absolute; top: 12px; right: 12px;
    background: rgba(255,255,255,.9); color: var(--accent-d);
    padding: 4px 10px; border-radius: 100px;
    font-size: .68rem; font-weight: 600; letter-spacing: .04em;
}
.case-card__body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.case-card h3 { font-size: 1.02rem; font-weight: 600; margin: 0 0 4px; letter-spacing: -.01em; }
.case-card__tag  { font-size: .82rem; color: var(--muted); margin: 0 0 12px; }
.case-card__desc { font-size: .86rem; color: var(--ink); margin: 0 0 14px; flex: 1; }
.case-card__foot {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 12px; border-top: 1px solid var(--line);
    font-size: .78rem;
}
.case-card__client { color: var(--muted); font-weight: 500; }
.case-card__link { color: var(--accent-d); font-weight: 600; }

/* ---------- CÓMO TRABAJAMOS ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
.step {
    background: var(--card); border: 1px solid var(--line); border-radius: 14px;
    padding: 28px 24px; position: relative;
}
.step__num {
    font-size: 2.2rem; font-weight: 700; color: var(--accent-vl);
    letter-spacing: -.02em; line-height: 1; margin-bottom: 12px;
}
.step h3 { font-size: 1.05rem; font-weight: 600; margin: 0 0 8px; letter-spacing: -.01em; }
.step p  { color: var(--muted); font-size: .9rem; margin: 0; line-height: 1.55; }

/* ---------- CONTACTO ---------- */
.contact-wrap {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
    max-width: 1000px; margin: 0 auto;
    background: var(--card); border: 1px solid var(--line); border-radius: 16px;
    padding: 40px; box-shadow: var(--shadow);
}
@media (max-width: 800px) { .contact-wrap { grid-template-columns: 1fr; padding: 28px; } }
.contact-info h3 { font-size: 1.35rem; font-weight: 600; margin: 0 0 12px; letter-spacing: -.01em; }
.contact-info p  { color: var(--muted); font-size: .95rem; margin: 0 0 20px; line-height: 1.55; }
.contact-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 0; border-top: 1px solid var(--line);
    font-size: .92rem;
}
.contact-item:first-of-type { border-top: none; }
.contact-item i { color: var(--accent-d); font-size: 1.15rem; width: 24px; text-align: center; }
.contact-item a { color: var(--ink); }

.contact-form { display: grid; gap: 12px; }
.contact-form label {
    display: block; font-size: .74rem; color: var(--muted);
    font-weight: 500; text-transform: uppercase; letter-spacing: .08em;
    margin-bottom: 4px;
}
.contact-form input,
.contact-form textarea {
    width: 100%; border: 1.5px solid var(--line); border-radius: 10px;
    background: var(--bg-alt); color: var(--ink);
    font: inherit; font-size: .95rem; padding: 11px 14px;
    outline: none; transition: border-color .15s, box-shadow .15s;
    font-family: inherit;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent-l);
    box-shadow: 0 0 0 4px rgba(91,108,93,.12);
}
.contact-form textarea { resize: vertical; min-height: 100px; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 500px) { .contact-form .row { grid-template-columns: 1fr; } }
.contact-form button {
    background: var(--accent); color: #fff;
    padding: 13px 24px; border: none; border-radius: 10px;
    font: inherit; font-size: .95rem; font-weight: 500;
    cursor: pointer; margin-top: 8px;
    transition: background .15s, transform .15s;
}
.contact-form button:hover { background: var(--accent-d); transform: translateY(-1px); }
.contact-form button:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.contact-feedback {
    padding: 12px 14px; border-radius: 8px; margin-top: 12px;
    font-size: .88rem; display: none;
}
.contact-feedback.ok  { display: block; background: rgba(42,143,98,.10); color: var(--green); border: 1px solid rgba(42,143,98,.25); }
.contact-feedback.err { display: block; background: rgba(196,69,69,.08);  color: var(--red);   border: 1px solid rgba(196,69,69,.25); }

/* ---------- FOOTER ---------- */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--line);
    padding: 40px 0 24px;
    color: var(--muted); font-size: .88rem;
}
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
@media (max-width: 700px) { .footer-inner { grid-template-columns: 1fr; } }
.footer h4 { color: var(--ink); font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin: 6px 0; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent-d); }
.footer-bottom {
    margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line);
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
    font-size: .8rem;
}