/* ===================================================
   TIEMPO ZERO – TZPro México
   Stylesheet principal con diseño moderno y responsive
   =================================================== */

/* ---- VARIABLES ---- */
:root {
  --color-primary: #1a4fba;
  --color-primary-dark: #1339a0;
  --color-primary-light: #2d6ef5;
  --color-secondary: #0ea5e9;
  --color-accent: #f59e0b;
  --color-text: #1e293b;
  --color-text-light: #475569;
  --color-text-muted: #64748b;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --color-success: #22c55e;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);
  --transition: .2s ease;
  --container-max: 1200px;
  --section-py: 5rem;
}

/* ---- RESET & BASE ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-main); color: var(--color-text); background: var(--color-bg); line-height: 1.65; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--color-text); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p { margin-bottom: 1rem; }

/* ---- UTILITIES ---- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: var(--section-py) 0; }
.bg-light { background: var(--color-bg-light); }
.section-label { display: inline-block; color: var(--color-primary); font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; margin-bottom: .75rem; }
.section-subtitle { color: var(--color-text-light); font-size: 1.1rem; max-width: 700px; margin: .75rem auto 2.5rem; text-align: center; }
.highlight { color: var(--color-secondary); }

/* ---- BUTTONS ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .7rem 1.6rem; border-radius: 50px; font-weight: 600; font-size: .95rem; cursor: pointer; border: 2px solid transparent; transition: all var(--transition); white-space: nowrap; }
.btn-lg { padding: .9rem 2.2rem; font-size: 1.05rem; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(26,79,186,.3); }
.btn-secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: #fff; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline:hover { background: rgba(255,255,255,.15); color: #fff; }
.btn-white { background: #fff; color: var(--color-primary); border-color: #fff; }
.btn-white:hover { background: var(--color-bg-light); color: var(--color-primary-dark); }
.btn-outline-white { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline-white:hover { background: rgba(255,255,255,.15); color: #fff; }

/* ---- HEADER ---- */
.site-header { position: sticky; top: 0; z-index: 1000; background: #fff; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; gap: 2rem; height: 72px; }
.logo-link { display: flex; align-items: center; flex-shrink: 0; }
.logo-img { height: 52px; width: auto; }
.main-nav { flex: 1; }
.main-nav ul { display: flex; gap: .25rem; align-items: center; }
.nav-link { padding: .5rem .9rem; border-radius: var(--radius-sm); color: var(--color-text); font-weight: 500; font-size: .95rem; transition: all var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--color-primary); background: rgba(26,79,186,.06); }
.nav-cta { padding: .55rem 1.4rem !important; font-size: .9rem; }
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--color-text); border-radius: 2px; transition: all var(--transition); }

/* ---- HERO ---- */
.hero { position: relative; min-height: 88vh; display: flex; align-items: center; background: #0a1628; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: url('../img/hero-bg.jpg') center/cover no-repeat; background-position: 65% center; opacity: 1; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to right, rgba(8,15,40,.88) 0%, rgba(8,15,40,.70) 45%, rgba(8,15,40,.25) 100%); z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; padding: 5rem 1.5rem; }
.hero-eyebrow { color: var(--color-secondary); font-size: .9rem; font-weight: 600; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 1rem; }
.hero-content h1 { color: #fff; margin-bottom: 1.25rem; }
.hero-subtitle { color: rgba(255,255,255,.85); font-size: 1.2rem; max-width: 600px; margin: 0 auto 2rem; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2rem; }
.hero-trust { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
.hero-trust span { color: rgba(255,255,255,.75); font-size: .9rem; font-weight: 500; }

/* ---- FEATURES BAR ---- */
.features-bar { background: var(--color-bg-dark); padding: 3rem 0; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.feature-item { text-align: center; padding: 1.5rem; }
.feature-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.feature-title { color: #fff; font-size: 1.1rem; margin-bottom: .5rem; }
.feature-item p { color: rgba(255,255,255,.65); font-size: .95rem; margin: 0; }

/* ---- ABOUT ---- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-text h2 { margin-bottom: 1rem; }
.about-text p { color: var(--color-text-light); }
.about-list { margin: 1.5rem 0; display: flex; flex-direction: column; gap: .5rem; }
.about-list li { color: var(--color-text-light); font-size: .95rem; }
.about-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* ---- SERVICES ---- */
.services-section { text-align: center; }
.services-section h2 { margin-bottom: .5rem; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; text-align: left; }
.service-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); transition: transform var(--transition), box-shadow var(--transition); }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-img-wrap { height: 200px; overflow: hidden; }
.service-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.service-card:hover .service-img-wrap img { transform: scale(1.05); }
.service-card h3 { font-size: 1.1rem; margin: 1.25rem 1.25rem .5rem; }
.service-card p { color: var(--color-text-light); font-size: .9rem; padding: 0 1.25rem; margin-bottom: 1.25rem; }
.service-card .btn { margin: 0 1.25rem 1.25rem; }

/* ---- PLANS ---- */
.plans-section { text-align: center; }
.plans-section h2 { margin-bottom: .5rem; }
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 2rem; align-items: start; }
.plan-card { background: #fff; border: 2px solid var(--color-border); border-radius: var(--radius-lg); padding: 2rem 1.5rem; position: relative; transition: all var(--transition); text-align: center; }
.plan-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.plan-featured { border-color: var(--color-primary); box-shadow: var(--shadow-lg); transform: scale(1.03); }
.plan-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--color-accent); color: #fff; font-size: .8rem; font-weight: 700; padding: .3rem 1.2rem; border-radius: 50px; white-space: nowrap; }
.plan-header h3 { color: var(--color-text); margin-bottom: .25rem; }
.plan-speed { color: var(--color-primary); font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
.plan-price { margin: 1rem 0; }
.price-amount { font-size: 3rem; font-weight: 800; color: var(--color-text); line-height: 1; }
.price-period { color: var(--color-text-muted); font-size: .95rem; }
.plan-features { text-align: left; margin: 1.25rem 0; display: flex; flex-direction: column; gap: .5rem; }
.plan-features li { color: var(--color-text-light); font-size: .9rem; }
.plan-btn { width: 100%; justify-content: center; margin-top: 1rem; }
.plan-note { font-size: .78rem; color: var(--color-text-muted); margin-top: .75rem; }
.plans-note { margin-top: 2rem; color: var(--color-text-light); font-size: .95rem; }
.plans-note a { font-weight: 600; }

/* ---- TESTIMONIALS ---- */
.testimonials-section { text-align: center; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; text-align: left; }
.testimonial-card { background: #fff; border-radius: var(--radius-md); padding: 1.75rem; box-shadow: var(--shadow-md); border-left: 4px solid var(--color-primary); }
.testimonial-stars { color: var(--color-accent); font-size: 1.2rem; letter-spacing: 2px; margin-bottom: .75rem; }
.testimonial-card blockquote { font-style: italic; color: var(--color-text-light); line-height: 1.7; margin-bottom: 1rem; }
.testimonial-author strong { display: block; font-weight: 700; color: var(--color-text); }
.testimonial-author span { font-size: .85rem; color: var(--color-text-muted); }
.testimonials-cta { margin-top: 3rem; }

/* ---- FAQ ---- */
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-container h2 { text-align: center; margin-bottom: 2.5rem; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: .75rem; overflow: hidden; }
.faq-item summary { padding: 1.25rem 1.5rem; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; user-select: none; transition: background var(--transition); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.5rem; color: var(--color-primary); font-weight: 300; flex-shrink: 0; }
.faq-item[open] summary { background: rgba(26,79,186,.05); }
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 1.5rem 1.25rem; color: var(--color-text-light); line-height: 1.7; }
.faq-answer p { margin: 0; }

/* ---- CTA SECTION ---- */
.cta-section { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%); padding: 5rem 0; text-align: center; }
.cta-content h2 { color: #fff; margin-bottom: 1rem; }
.cta-content p { color: rgba(255,255,255,.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---- FOOTER ---- */
.site-footer { background: var(--color-bg-dark); color: rgba(255,255,255,.75); padding: 4rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr 1.5fr; gap: 3rem; }
.footer-brand p { font-size: .9rem; margin-top: 1rem; color: rgba(255,255,255,.6); line-height: 1.7; }
.footer-social { display: flex; gap: 1rem; margin-top: 1.25rem; }
.footer-social a { color: rgba(255,255,255,.6); transition: color var(--transition); }
.footer-social a:hover { color: #fff; }
.site-footer h3 { color: #fff; font-size: .95rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 1rem; }
.site-footer ul { display: flex; flex-direction: column; gap: .5rem; }
.site-footer ul a { color: rgba(255,255,255,.6); font-size: .88rem; transition: color var(--transition); }
.site-footer ul a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 3rem; padding: 1.5rem 0; }
.footer-bottom p { text-align: center; font-size: .85rem; color: rgba(255,255,255,.4); }

/* ---- PAGE HERO (interior pages) ---- */
.page-hero { background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e3a8a 100%); padding: 5rem 0 4rem; text-align: center; }
.page-hero h1 { color: #fff; margin-bottom: 1rem; }
.page-hero p { color: rgba(255,255,255,.8); font-size: 1.15rem; max-width: 600px; margin: 0 auto; }

/* ---- CONTACT FORM ---- */
.contact-section { padding: var(--section-py) 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: start; }
.contact-info h2 { margin-bottom: 1rem; }
.contact-info p { color: var(--color-text-light); margin-bottom: 2rem; }
.contact-detail { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; color: var(--color-text-light); }
.contact-detail strong { color: var(--color-text); font-weight: 600; }
.form-card { background: #fff; border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-lg); border: 1px solid var(--color-border); }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .5rem; color: var(--color-text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: .8rem 1rem; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); font-family: var(--font-main); font-size: .95rem; color: var(--color-text); transition: border-color var(--transition), box-shadow var(--transition); background: var(--color-bg-light); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(26,79,186,.12); background: #fff; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 1rem; font-size: 1.05rem; }
.form-note { font-size: .82rem; color: var(--color-text-muted); text-align: center; margin-top: .75rem; }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { gap: 2.5rem; }
}

@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }
  .main-nav { display: none; position: fixed; top: 72px; left: 0; right: 0; background: #fff; padding: 1.5rem; box-shadow: var(--shadow-lg); border-top: 1px solid var(--color-border); flex-direction: column; }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; gap: .25rem; }
  .nav-cta { display: none; }
  .mobile-menu-btn { display: flex; margin-left: auto; }
  .features-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .plans-grid { grid-template-columns: 1fr; max-width: 400px; margin: 2rem auto 0; }
  .plan-featured { transform: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .hero-trust { flex-direction: column; align-items: center; gap: .5rem; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero { min-height: 70vh; }
  .form-card { padding: 1.5rem; }
}

/* ---- ACCESSIBILITY ---- */
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; border-radius: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---- ANIMATIONS ---- */
@media (prefers-reduced-motion: no-preference) {
  .service-card, .plan-card, .testimonial-card { animation: fadeInUp .5s ease both; }
  @keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
}
@media (max-width: 768px) {
  .hero {
    background-image: url('../img/hero-bg-mobile.jpg');
  }
}

@media (max-width: 768px) {
  .hero::before { background-image: url('../img/hero-bg-mobile.jpg'); background-position: 70% center; }
}

/* ========== HERO VIDEO ========== */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 65% center;
  z-index: 0;
  pointer-events: none;
}
/* Deshabilitar video en móvil — usar imagen estática para ahorrar datos */
@media (max-width: 768px) {
  .hero-video { display: none; }
}