/*
═══════════════════════════════════════════════════════════════
  GB CONSULTING GROUP MX — Design System PRO
  Paleta: Azul Corporativo + Teal + Slate Oscuro
  Nivel: McKinsey / Deloitte / EY Quality
═══════════════════════════════════════════════════════════════
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:ital,wght@0,700;0,800;1,700&display=swap');
@import url('https://cdn.jsdelivr.net/npm/remixicon@4.5.0/fonts/remixicon.css');

/* ═══ TOKENS ═══ */
:root {
    --primary: #0d6eaa;
    --primary-dark: #0a5586;
    --teal: #0e7490;
    --deep: #0f2b46;
    --slate: #334155;
    --sky: #38bdf8;
    --sky-pale: #e0f2fe;
    --teal-pale: #e0f7fa;
    --bg: #fafcff;
    --bg-alt: #f1f6fb;
    --surface: #f8fafc;
    --text: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-dim: #94a3b8;
    --border-solid: #e2e8f0;
    --green: #059669;
    --mint-pale: #d1fae5;
    --gold: #f59e0b;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.1);
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 999px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ═══ TYPOGRAPHY ═══ */
.font-display { font-family: 'Playfair Display', Georgia, serif; }
h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 900; line-height: 1.1; letter-spacing: -0.03em; color: var(--deep); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; color: var(--deep); }
h3 { font-size: 1.15rem; font-weight: 700; color: var(--deep); }

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--teal), var(--sky));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.gradient-text-shimmer {
    background: linear-gradient(90deg, var(--deep), var(--primary), var(--teal), var(--primary), var(--deep));
    background-size: 300% 100%;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    animation: shimmer 4s ease-in-out infinite;
}
@keyframes shimmer { 0%,100% { background-position: 100% 50%; } 50% { background-position: 0% 50%; } }
@keyframes gradientShift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

/* ═══ ICONS ═══ */
.ri { font-size: 1.2em; vertical-align: middle; }
.icon-grad {
    background: linear-gradient(135deg, var(--primary), var(--teal));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.icon-grad-lg {
    font-size: 2.2rem;
    background: linear-gradient(135deg, var(--primary), var(--teal));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.icon-grad-xl {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--teal));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ═══ LAYOUT ═══ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { padding: 96px 0; background: var(--bg-alt); }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; margin-top: 12px; line-height: 1.7; }
.section-tag {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px; border-radius: var(--radius-full);
    font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; margin-bottom: 16px;
    background: var(--sky-pale); color: var(--primary); border: 1px solid rgba(14,110,170,0.1);
}
.text-center { text-align: center; }

/* ═══ BUTTONS ═══ */
.btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
    font-weight: 600; font-size: 0.9rem; border: 2px solid transparent;
    border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition);
    text-decoration: none; line-height: 1.4;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--teal)); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13,110,170,0.3); }
.btn-outline { background: transparent; border-color: var(--border-solid); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--sky-pale); }
.btn-whatsapp { background: linear-gradient(135deg, #25d366, #128c7e); color: white; }
.btn-whatsapp:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,211,102,0.3); }
.btn-ghost { background: none; border: none; color: var(--primary); padding: 8px 4px; font-weight: 600; }
.btn-ghost:hover { color: var(--teal); }
.btn-lg { padding: 15px 36px; font-size: 0.95rem; }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }
.btn-full { width: 100%; justify-content: center; }

/* ═══ NAVBAR ═══ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 14px 24px; transition: var(--transition);
}
.navbar.scrolled { padding: 8px 20px; }
.nav-container {
    max-width: 1120px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(28px) saturate(2);
    -webkit-backdrop-filter: blur(28px) saturate(2);
    border: 1px solid rgba(255,255,255,0.45);
    border-radius: var(--radius-xl);
    padding: 8px 12px 8px 20px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.6);
    transition: var(--transition);
}
.navbar.scrolled .nav-container {
    background: rgba(255,255,255,0.82);
    box-shadow: 0 8px 40px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.8);
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 38px; object-fit: contain; transition: transform 0.3s; }
.nav-logo:hover img { transform: scale(1.05); }

.nav-links {
    display: flex; align-items: center; gap: 4px;
    background: rgba(13,110,170,0.04);
    border-radius: var(--radius-full); padding: 4px;
}
.nav-links a {
    padding: 8px 18px; border-radius: var(--radius-full); font-size: 0.85rem;
    font-weight: 500; color: var(--text-secondary); transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); background: rgba(13,110,170,0.08); }
.nav-links a.active {
    color: white; font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--deep));
    box-shadow: 0 2px 8px rgba(13,110,170,0.3);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-cta { display: none; border-radius: var(--radius-full) !important; padding: 10px 24px !important; }

.mobile-toggle {
    display: none; background: none; border: none; cursor: pointer;
    width: 36px; height: 36px; flex-direction: column; justify-content: center;
    align-items: center; gap: 5px; border-radius: 50%;
}
.mobile-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ═══ CARDS ═══ */
.card-3d-hover { transition: transform 0.4s ease, box-shadow 0.4s ease; }
.card-3d-hover:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

/* ═══ FORMS ═══ */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.75rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 13px 16px; border: 2px solid var(--border-solid);
    border-radius: var(--radius-sm); font-size: 0.9rem; font-family: inherit;
    transition: var(--transition); background: white;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(13,110,170,0.1); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-status {
    min-height: 22px;
    margin-top: 12px;
    color: var(--primary);
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.5;
}

/* ═══ FOOTER ═══ */
.footer { background: var(--deep); color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand img { height: 48px; margin-bottom: 16px; filter: brightness(10); }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); }
.footer-col h4 { color: white; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 16px; }
.footer-col a { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: rgba(255,255,255,0.55); padding: 5px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--sky); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.35); }

/* ═══ WHATSAPP FLOAT ═══ */
.wa-float {
    position: fixed; bottom: 28px; right: 28px; z-index: 999;
    width: 60px; height: 60px; border-radius: 50%;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: white; font-size: 1.7rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    transition: var(--transition); cursor: pointer; text-decoration: none;
    animation: waPulse 2s ease-in-out infinite;
}
.wa-float:hover { transform: scale(1.12); box-shadow: 0 6px 30px rgba(37,211,102,0.5); }
.wa-float .wa-tooltip {
    position: absolute; right: 72px; top: 50%; transform: translateY(-50%);
    background: white; color: var(--text); font-size: 0.82rem; font-weight: 600;
    padding: 10px 16px; border-radius: var(--radius-xs); box-shadow: var(--shadow-lg);
    white-space: nowrap; opacity: 0; pointer-events: none; transition: var(--transition);
}
.wa-float .wa-tooltip::after { content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%); border: 6px solid transparent; border-left-color: white; }
.wa-float:hover .wa-tooltip { opacity: 1; }
@keyframes waPulse { 0%,100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); } 50% { box-shadow: 0 4px 20px rgba(37,211,102,0.4), 0 0 0 12px rgba(37,211,102,0.1); } }

/* ═══ ANIMATIONS ═══ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s, transform 0.8s; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.8s, transform 0.8s; }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.8s, transform 0.8s; }
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.95); transition: opacity 0.8s, transform 0.8s; }
.reveal-scale.visible { opacity: 1; transform: scale(1); }
.stagger.visible > * { opacity: 0; animation: staggerIn 0.6s ease forwards; }
.stagger.visible > *:nth-child(1) { animation-delay: 0s; }
.stagger.visible > *:nth-child(2) { animation-delay: 0.1s; }
.stagger.visible > *:nth-child(3) { animation-delay: 0.2s; }
.stagger.visible > *:nth-child(4) { animation-delay: 0.3s; }
.stagger.visible > *:nth-child(5) { animation-delay: 0.4s; }
.stagger.visible > *:nth-child(6) { animation-delay: 0.5s; }
@keyframes staggerIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.hero-animate { animation: heroFadeIn 1s ease forwards; }
@keyframes heroFadeIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); display: inline-block; animation: pulse 2s ease infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(5,150,105,0.5); } 70% { box-shadow: 0 0 0 8px rgba(5,150,105,0); } }

/* ═══ DARK MODE ═══ */
/* Modo oscuro — paleta Slate 900/800, texto claro, superficies ajustadas */
[data-theme="dark"] {
    --bg: #0f172a;
    --bg-alt: #1e293b;
    --surface: #1e293b;
    --deep: #e2e8f0;
    --text: #e2e8f0;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --border-solid: #334155;
    --sky-pale: rgba(56,189,248,0.12);
    --teal-pale: rgba(14,116,144,0.12);
    --mint-pale: rgba(5,150,105,0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.5);
    color-scheme: dark;
}

/* --- Navbar oscuro (glass) --- */
[data-theme="dark"] .nav-container {
    background: rgba(15,23,42,0.65);
    border-color: rgba(255,255,255,0.08);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}
[data-theme="dark"] .navbar.scrolled .nav-container {
    background: rgba(15,23,42,0.88);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06);
}
[data-theme="dark"] .nav-links {
    background: rgba(56,189,248,0.06);
}
[data-theme="dark"] .nav-links a {
    color: var(--text-muted);
}
[data-theme="dark"] .nav-links a:hover {
    color: var(--sky);
    background: rgba(56,189,248,0.1);
}
[data-theme="dark"] .mobile-toggle span {
    background: var(--text);
}

/* --- Cards y superficies --- */
[data-theme="dark"] .service-card,
[data-theme="dark"] .blog-card,
[data-theme="dark"] .trust-card,
[data-theme="dark"] .contact-card,
[data-theme="dark"] .contact-form-wrap {
    background: #1e293b;
    border-color: #334155;
}
[data-theme="dark"] .service-card:hover,
[data-theme="dark"] .blog-card:hover,
[data-theme="dark"] .trust-card:hover {
    border-color: rgba(56,189,248,0.2);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
[data-theme="dark"] .contact-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* --- Bloques de gradiente (hero-card, blog-img) --- */
[data-theme="dark"] .blog-img {
    background: linear-gradient(135deg, rgba(56,189,248,0.1), rgba(14,116,144,0.1)) !important;
}
[data-theme="dark"] .service-icon-wrap {
    background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(14,116,144,0.15));
}
[data-theme="dark"] .diff-feature {
    background: #0f172a;
}
[data-theme="dark"] .contact-card-icon {
    background: linear-gradient(135deg, rgba(56,189,248,0.12), rgba(14,116,144,0.12));
}

/* --- Section tags --- */
[data-theme="dark"] .section-tag {
    background: rgba(56,189,248,0.1);
    border-color: rgba(56,189,248,0.15);
}

/* --- Formularios --- */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background: #0f172a;
    border-color: #334155;
    color: var(--text);
}
[data-theme="dark"] .form-input::placeholder,
[data-theme="dark"] .form-textarea::placeholder {
    color: var(--text-dim);
}
[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(13,110,170,0.2);
}
[data-theme="dark"] .form-select option {
    background: #1e293b;
    color: var(--text);
}
[data-theme="dark"] .form-status {
    color: var(--sky);
}

/* --- Social links --- */
[data-theme="dark"] .social-link {
    background: #0f172a;
    border-color: #334155;
}
[data-theme="dark"] .social-link:hover {
    background: rgba(56,189,248,0.1);
    border-color: var(--primary);
}

/* --- Mapa --- */
[data-theme="dark"] .map-container {
    border-color: #334155;
}

/* --- WhatsApp tooltip --- */
[data-theme="dark"] .wa-float .wa-tooltip {
    background: #1e293b;
    color: var(--text);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
[data-theme="dark"] .wa-float .wa-tooltip::after {
    border-left-color: #1e293b;
}

/* --- Footer (ya es oscuro, ajustes mínimos) --- */
[data-theme="dark"] .footer {
    background: #020617;
}

/* --- Botón toggle de tema --- */
.theme-toggle {
    background: none; border: none; cursor: pointer;
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary); font-size: 1.15rem;
    transition: var(--transition);
    background: rgba(13,110,170,0.06);
}
.theme-toggle:hover {
    color: var(--primary);
    background: rgba(13,110,170,0.12);
    transform: rotate(15deg);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { transition: opacity 0.3s, transform 0.3s; position: absolute; }
.theme-toggle .icon-moon { opacity: 1; transform: scale(1); }
.theme-toggle .icon-sun  { opacity: 0; transform: scale(0.6); }
[data-theme="dark"] .theme-toggle .icon-moon { opacity: 0; transform: scale(0.6); }
[data-theme="dark"] .theme-toggle .icon-sun  { opacity: 1; transform: scale(1); }
[data-theme="dark"] .theme-toggle { color: var(--sky); background: rgba(56,189,248,0.1); }

/* --- Mobile nav en dark mode --- */
@media (max-width: 768px) {
    [data-theme="dark"] .nav-links {
        background: rgba(15,23,42,0.95);
        border: 1px solid rgba(255,255,255,0.06);
    }
}

/* ═══ RESPONSIVE ═══ */
@media (min-width: 768px) { .nav-cta { display: inline-flex; } }
@media (max-width: 768px) {
    .mobile-toggle { display: flex; }
    .nav-links { position: absolute; top: 70px; left: 12px; right: 12px; flex-direction: column; background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-10px); transition: var(--transition); }
    .nav-links.active { opacity: 1; visibility: visible; pointer-events: all; transform: translateY(0); }
    .footer-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

:where(a, button, input, select, textarea):focus-visible {
    outline: 3px solid var(--sky);
    outline-offset: 3px;
}

.public-brand-loading {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.public-brand-loader {
    width: 28px;
    height: 22px;
    object-fit: contain;
    padding: 3px 4px;
    border-radius: 6px;
    background: rgba(255,255,255,.94);
    animation: publicBrandBreathe 1.1s ease-in-out infinite;
}

@keyframes publicBrandBreathe {
    0%, 100% { transform: translateY(0) scale(.94); opacity: .82; }
    50% { transform: translateY(-2px) scale(1); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .public-brand-loader { animation: none; }
}