/* =========================================================
   KODERA — Desarrollo web y sistemas a medida
   Material Design 3 (tema naranjo). "TODO:" = personalizar.
   ========================================================= */

:root {
  --md-primary: #B35900;
  --md-primary-container: #FFDDB8;
  --md-on-primary: #FFFFFF;
  --md-on-primary-container: #3A1800;

  --md-secondary: #7C5B3F;
  --md-secondary-container: #FFE8D1;
  --md-on-secondary-container: #2C1600;

  --md-tertiary: #9C6644;
  --md-tertiary-container: #FFDCC5;
  --md-on-tertiary-container: #351200;

  --md-surface: #FFFFFF;
  --md-surface-dim: #FFF6EE;
  --md-surface-variant: #F5E4D3;
  --md-on-surface: #241A12;
  --md-on-surface-variant: #57453A;
  --md-outline: #8A7768;
  --md-outline-variant: #E0CFBE;

  --md-success: #146C2E;
  --md-success-container: #C6F1D6;

  --el-1: 0 1px 2px rgba(0,0,0,.30), 0 1px 3px 1px rgba(0,0,0,.15);
  --el-2: 0 1px 2px rgba(0,0,0,.30), 0 2px 6px 2px rgba(0,0,0,.15);
  --el-3: 0 1px 3px rgba(0,0,0,.30), 0 4px 8px 3px rgba(0,0,0,.15);

  --shape-xs: 4px; --shape-sm: 8px; --shape-md: 12px; --shape-lg: 16px; --shape-xl: 28px; --shape-full: 999px;
  --ease-standard: cubic-bezier(.2,0,0,1);
  --dur-short: 150ms; --dur-medium: 300ms;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: 'Roboto', system-ui, -apple-system, sans-serif;
  color: var(--md-on-surface); background: var(--md-surface); -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
.display-lg  { font-size: clamp(2.25rem, 4.5vw, 3.25rem); line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; }
.headline-lg { font-size: clamp(1.75rem, 3vw, 2.25rem); line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
.title-lg    { font-size: 1.375rem; line-height: 1.3; font-weight: 500; }
.body-lg     { font-size: 1.0625rem; line-height: 1.6; }
.body-md     { font-size: 0.9375rem; line-height: 1.55; }
.label-lg    { font-size: 0.875rem; font-weight: 500; letter-spacing: 0.02em; }
.text-muted  { color: var(--md-on-surface-variant); }

.eyebrow {
  display: inline-block; font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--md-on-primary-container); background: var(--md-primary-container);
  padding: 6px 14px; border-radius: var(--shape-full); margin-bottom: 16px;
}
.section-header { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-header p { color: var(--md-on-surface-variant); margin-top: 12px; }
section { padding: 100px 0; }

/* ---------- Buttons ---------- */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 24px; border-radius: var(--shape-full); border: none;
  font-family: inherit; font-size: 0.9375rem; font-weight: 500; cursor: pointer;
  transition: box-shadow var(--dur-short) var(--ease-standard), background var(--dur-short) var(--ease-standard);
  white-space: nowrap;
}
.btn .material-symbols-outlined { font-size: 20px; }
.btn-filled { background: var(--md-primary); color: var(--md-on-primary); }
.btn-filled:hover { box-shadow: var(--el-2); }
.btn-outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }
.btn-outlined:hover { background: var(--md-primary-container); border-color: transparent; }
.btn-lg { height: 56px; padding: 0 32px; font-size: 1rem; }

.ripple { position: absolute; border-radius: 50%; background: rgba(255,255,255,.5); transform: scale(0); animation: ripple-anim 600ms var(--ease-standard); pointer-events: none; }
.btn-outlined .ripple { background: rgba(179,89,0,.2); }
@keyframes ripple-anim { to { transform: scale(3); opacity: 0; } }

/* ---------- Header ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: border-color var(--dur-medium), box-shadow var(--dur-medium);
}
.header.is-scrolled { border-color: var(--md-outline-variant); box-shadow: var(--el-1); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; }
.brand .logo-mark {
  width: 38px; height: 38px; border-radius: var(--shape-sm);
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { padding: 10px 16px; border-radius: var(--shape-full); font-size: 0.9375rem; font-weight: 500; color: var(--md-on-surface-variant); transition: background var(--dur-short), color var(--dur-short); }
.nav-links a:hover { background: var(--md-surface-variant); color: var(--md-on-surface); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 44px; height: 44px; border-radius: 50%; align-items: center; justify-content: center; }
.nav-toggle:hover { background: var(--md-surface-variant); }

/* ---------- Hero ---------- */
.hero { padding: 176px 0 100px; background: linear-gradient(160deg, var(--md-primary-container) 0%, #FFFFFF 60%); }
.hero .container { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero-copy p { margin: 20px 0 32px; max-width: 480px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
.hero-stats .stat-num { font-size: 1.875rem; font-weight: 700; color: var(--md-primary); }
.hero-stats .stat-label { color: var(--md-on-surface-variant); font-size: 0.8125rem; }

.hero-art {
  position: relative; aspect-ratio: 4/3.3; border-radius: var(--shape-xl);
  background: linear-gradient(160deg, var(--md-secondary-container), var(--md-tertiary-container));
  box-shadow: var(--el-3); overflow: hidden;
}
.hero-art .code-window {
  position: absolute; inset: 10%; background: #1B1B21; border-radius: var(--shape-md); box-shadow: var(--el-2); overflow: hidden;
}
.hero-art .code-bar { display: flex; gap: 6px; padding: 12px 14px; background: #2A2A32; }
.hero-art .code-bar span { width: 9px; height: 9px; border-radius: 50%; background: #565660; }
.hero-art .code-body { padding: 18px; font-family: 'Roboto', monospace; font-size: 0.75rem; line-height: 1.9; color: #C6C6D1; }
.hero-art .code-body .k { color: #8AB4FF; }
.hero-art .code-body .s { color: #FFCB8A; }
.hero-art .code-body .c { color: #7BD88F; }
.hero-art .floating-card {
  position: absolute; bottom: 6%; right: 6%; background: var(--md-surface); border-radius: var(--shape-md);
  box-shadow: var(--el-2); padding: 12px 16px; display: flex; align-items: center; gap: 10px; font-size: 0.8125rem; font-weight: 500;
}
.hero-art .floating-card .material-symbols-outlined { color: var(--md-success); }

/* ---------- Servicios ---------- */
.services { background: var(--md-surface-dim); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--md-surface); border: 1px solid var(--md-outline-variant); border-radius: var(--shape-lg); padding: 32px;
  transition: box-shadow var(--dur-medium) var(--ease-standard), transform var(--dur-medium) var(--ease-standard);
}
.service-card:hover { box-shadow: var(--el-2); transform: translateY(-4px); }
.service-icon {
  width: 52px; height: 52px; border-radius: var(--shape-md); background: var(--md-primary-container); color: var(--md-primary);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.service-card h3 { margin: 0 0 8px; font-size: 1.125rem; }
.service-card p { margin: 0 0 16px; color: var(--md-on-surface-variant); }
.service-card ul { display: grid; gap: 8px; }
.service-card ul li { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: var(--md-on-surface-variant); }
.service-card ul .material-symbols-outlined { font-size: 16px; color: var(--md-success); }

/* ---------- Proceso ---------- */
.process-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; }
.process-step { text-align: center; position: relative; }
.process-step::before {
  counter-increment: step; content: counter(step);
  width: 44px; height: 44px; border-radius: 50%; background: var(--md-primary); color: var(--md-on-primary);
  display: flex; align-items: center; justify-content: center; font-weight: 700; margin: 0 auto 16px;
}
.process-step h4 { margin: 0 0 6px; font-size: 0.9375rem; }
.process-step p { margin: 0; font-size: 0.8125rem; color: var(--md-on-surface-variant); }

/* ---------- Tecnologías ---------- */
.tech { background: var(--md-surface-dim); }
.tech-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.tech-chip {
  display: inline-flex; align-items: center; gap: 8px; background: var(--md-surface); border: 1px solid var(--md-outline-variant);
  padding: 10px 18px; border-radius: var(--shape-full); font-size: 0.9375rem; font-weight: 500;
}
.tech-chip .material-symbols-outlined { font-size: 18px; color: var(--md-primary); }

/* ---------- Portafolio ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { border: 1px solid var(--md-outline-variant); border-radius: var(--shape-lg); overflow: hidden; }
.case-thumb {
  aspect-ratio: 16/10; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, var(--md-primary-container), var(--md-tertiary-container));
  color: var(--md-on-primary-container);
}
.case-thumb .material-symbols-outlined { font-size: 40px; }
.case-body { padding: 22px 24px; }
.case-tag { font-size: 0.75rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--md-primary); }
.case-body h3 { margin: 8px 0 8px; font-size: 1.0625rem; }
.case-body p { margin: 0; color: var(--md-on-surface-variant); font-size: 0.9375rem; }
.case-note { margin-top: 20px; text-align: center; font-size: 0.8125rem; color: var(--md-on-surface-variant); }

/* ---------- Planes ---------- */
.plans { background: var(--md-surface-dim); }
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plan-card {
  background: var(--md-surface); border: 1px solid var(--md-outline-variant); border-radius: var(--shape-lg);
  padding: 36px 28px; display: flex; flex-direction: column; position: relative;
}
.plan-card.featured { border-color: var(--md-primary); box-shadow: var(--el-3); }
.plan-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--md-primary); color: var(--md-on-primary); font-size: 0.75rem; font-weight: 700;
  letter-spacing: .04em; padding: 6px 16px; border-radius: var(--shape-full);
}
.plan-card h3 { margin: 0 0 4px; }
.plan-amount { font-size: 2.25rem; font-weight: 700; margin: 16px 0 4px; }
.plan-amount span { font-size: 0.9375rem; font-weight: 400; color: var(--md-on-surface-variant); }
.plan-features { margin: 24px 0 32px; flex-grow: 1; }
.plan-features li { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: 0.9375rem; }
.plan-features .material-symbols-outlined { color: var(--md-success); font-size: 20px; }


/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--md-outline-variant); }
.faq-question {
  width: 100%; background: none; border: none; text-align: left; padding: 20px 4px; font-size: 1rem; font-weight: 500;
  font-family: inherit; display: flex; justify-content: space-between; align-items: center; cursor: pointer; color: var(--md-on-surface);
}
.faq-question .material-symbols-outlined { transition: transform var(--dur-medium) var(--ease-standard); }
.faq-item.open .faq-question .material-symbols-outlined { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--dur-medium) var(--ease-standard); color: var(--md-on-surface-variant); }
.faq-answer p { margin: 0 4px 20px; }
.faq-item.open .faq-answer { max-height: 220px; }

/* ---------- CTA ---------- */
.cta-banner {
  margin: 0 24px; max-width: 1152px; margin-left: auto; margin-right: auto;
  background: linear-gradient(135deg, var(--md-primary), var(--md-on-primary-container));
  border-radius: var(--shape-xl); padding: 72px 48px; text-align: center; color: #fff;
}
.cta-banner h2 { margin: 0 0 12px; }
.cta-banner p { margin: 0 0 32px; opacity: .9; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-banner .btn-filled { background: #fff; color: var(--md-primary); }

/* ---------- Contacto ---------- */
.contact { background: var(--md-surface-dim); }
.contact .container { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; }
.contact-info-card { background: var(--md-surface); border-radius: var(--shape-lg); padding: 36px; box-shadow: var(--el-1); }
.contact-info-item { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 24px; }
.contact-info-item:last-child { margin-bottom: 0; }
.contact-info-item .material-symbols-outlined {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: var(--shape-sm);
  background: var(--md-secondary-container); color: var(--md-secondary); display: flex; align-items: center; justify-content: center;
}
.contact-info-item h4 { margin: 0 0 2px; font-size: 0.9375rem; }
.contact-info-item p { margin: 0; color: var(--md-on-surface-variant); font-size: 0.9375rem; }

.contact-form { background: var(--md-surface); border-radius: var(--shape-lg); padding: 36px; box-shadow: var(--el-1); display: grid; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { display: block; font-size: 0.8125rem; font-weight: 500; margin-bottom: 6px; color: var(--md-on-surface-variant); }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--md-outline); border-radius: var(--shape-sm); padding: 14px 16px;
  font-family: inherit; font-size: 0.9375rem; color: var(--md-on-surface); background: var(--md-surface);
  transition: border-color var(--dur-short), box-shadow var(--dur-short);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--md-primary); box-shadow: 0 0 0 3px var(--md-primary-container); }
.form-success { display: none; align-items: center; gap: 8px; color: var(--md-success); font-size: 0.9375rem; }
.form-success.show { display: flex; }

/* ---------- Footer ---------- */
.footer { background: #2E1B0D; color: #F3E6DA; padding: 72px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; margin-bottom: 56px; }
.footer .brand { color: #fff; margin-bottom: 16px; }
.footer-col p { color: #D3BDA9; font-size: 0.9375rem; max-width: 280px; }
.footer-col h4 { font-size: 0.875rem; text-transform: uppercase; letter-spacing: .06em; margin: 0 0 16px; color: #fff; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: #D3BDA9; font-size: 0.9375rem; transition: color var(--dur-short); }
.footer-col ul a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 32px; border-top: 1px solid #4A311E; font-size: 0.8125rem; color: #B79A82; flex-wrap: wrap; gap: 12px; }
.social-icons { display: flex; gap: 8px; }
.social-icons a { width: 36px; height: 36px; border-radius: 50%; background: #3D2415; display: flex; align-items: center; justify-content: center; transition: background var(--dur-short); }
.social-icons a:hover { background: var(--md-primary); }

/* ---------- FAB ---------- */
.fab {
  position: fixed; bottom: 24px; right: 24px; z-index: 90; width: 56px; height: 56px; border-radius: var(--shape-lg);
  background: var(--md-primary-container); color: var(--md-on-primary-container); border: none; box-shadow: var(--el-3); cursor: pointer;
  display: flex; align-items: center; justify-content: center; opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: opacity var(--dur-medium), transform var(--dur-medium);
}
.fab.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* ---------- Reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 600ms var(--ease-standard), transform 600ms var(--ease-standard); }
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ---------- Mobile nav ---------- */
.mobile-nav {
  position: fixed; inset: 0; z-index: 99; background: var(--md-surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  transform: translateX(100%); transition: transform var(--dur-medium) var(--ease-standard);
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a { font-size: 1.4rem; font-weight: 500; padding: 14px; }
.mobile-nav .btn { margin-top: 24px; }
.mobile-nav-close { position: absolute; top: 20px; right: 20px; background: none; border: none; cursor: pointer; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 480px; margin: 0 auto; }
  .service-grid, .case-grid, .plans-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .contact .container { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links, .header-actions .btn-outlined { display: none; }
  .nav-toggle { display: flex; }
  section { padding: 72px 0; }
  .hero { padding: 128px 0 64px; }
  .service-grid, .case-grid, .plans-grid, .footer-grid, .form-row { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .cta-banner { margin-left: 16px; margin-right: 16px; padding: 48px 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { gap: 24px; }
}

/* ---------- Nosotros ---------- */
.about .container { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-copy p { color: var(--md-on-surface-variant); margin: 16px 0 0; }
.about-points { display: grid; gap: 16px; }
.about-point { display: flex; gap: 16px; align-items: flex-start; background: var(--md-surface-dim); border: 1px solid var(--md-outline-variant); border-radius: var(--shape-lg); padding: 20px 22px; }
.about-point .material-symbols-outlined { width: 44px; height: 44px; flex-shrink: 0; border-radius: var(--shape-sm); background: var(--md-primary-container); color: var(--md-primary); display: flex; align-items: center; justify-content: center; }
.about-point h4 { margin: 0 0 4px; font-size: 1rem; }
.about-point p { margin: 0; font-size: 0.9375rem; color: var(--md-on-surface-variant); }

/* ---------- Demos ---------- */
.demo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.demo-card { display: flex; flex-direction: column; border: 1px solid var(--md-outline-variant); border-radius: var(--shape-lg); overflow: hidden; background: var(--md-surface); transition: box-shadow var(--dur-medium) var(--ease-standard), transform var(--dur-medium) var(--ease-standard); }
.demo-card:hover { box-shadow: var(--el-2); transform: translateY(-4px); }
.demo-thumb { aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center; color: #fff; background: linear-gradient(140deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #000)); }
.demo-thumb .material-symbols-outlined { font-size: 48px; }
.demo-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex-grow: 1; }
.demo-body h3 { margin: 8px 0; font-size: 1.0625rem; }
.demo-body p { margin: 0 0 20px; color: var(--md-on-surface-variant); font-size: 0.9375rem; flex-grow: 1; }
.demo-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; color: var(--md-primary); font-size: 0.9375rem; }
.demo-link .material-symbols-outlined { font-size: 18px; transition: transform var(--dur-short); }


@media (max-width: 980px) {
  .about .container { grid-template-columns: 1fr; gap: 32px; }
  .demo-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .demo-grid { grid-template-columns: 1fr; }
}

/* Alternancia de fondos entre secciones */
.process { background: var(--md-surface-dim); }
.tech { background: var(--md-surface); }
@media (max-width: 480px) {
  .header-actions .btn-filled { display: none; }
}