/* ALPES DESIGN — minimal, mobile-first. Spacing on an 8px grid. */

:root {
  --black: #000000;
  --text-2: #555555;
  --text-3: #777777;
  --line: #e5e5e5;
  --line-strong: #cccccc;
  --white: #ffffff;
  --muted-bg: #f9f9f9;
  --hover-bg: #f5f5f5;
  --charcoal: #2a2a2a;
  --header-h: 64px;
  --t: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }
a { color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 1px solid var(--charcoal); outline-offset: 4px; }

.skip-link {
  position: absolute; left: 16px; top: -48px;
  padding: 8px 16px; background: var(--black); color: var(--white);
  text-decoration: none; z-index: 100;
}
.skip-link:focus { top: 8px; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.container-narrow { max-width: 800px; }

/* ---------- Intro (logo drawn, then the site appears) ---------- */
.intro { display: none; }
.has-intro .intro {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: var(--white); color: var(--black); cursor: pointer;
  /* Pure CSS timeline: the intro always goes away, even if JS fails. */
  animation: intro-out 0.5s ease 2s forwards;
}
.intro-mark { width: clamp(120px, 28vw, 200px); height: auto; overflow: visible; }
.intro-mark path { stroke-dasharray: 1; stroke-dashoffset: 1; }
.intro-frame { animation: intro-draw 0.9s ease-in-out 0.15s forwards; }
.intro-a     { animation: intro-draw 0.6s ease-in-out 0.8s forwards; }
.intro-bar   { animation: intro-draw 0.25s ease-out 1.3s forwards; }
.intro-done .intro { display: none; }
@keyframes intro-draw { to { stroke-dashoffset: 0; } }
@keyframes intro-out { to { opacity: 0; visibility: hidden; } }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h); flex-wrap: wrap;
}
.logo {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 17px; font-weight: 400; letter-spacing: 0.06em;
  text-decoration: none; line-height: 1;
}
.logo-mark { width: 26px; height: 24px; flex-shrink: 0; }
.nav-toggle {
  font: inherit; font-size: 14px; color: var(--black);
  background: none; border: 1px solid var(--line); padding: 8px 16px; cursor: pointer;
  transition: border-color var(--t);
}
.nav-toggle:hover { border-color: var(--black); }
.site-nav {
  display: none; width: 100%; flex-direction: column;
  padding: 8px 0 16px;
}
.site-nav.is-open { display: flex; }
.site-nav a {
  padding: 12px 0; font-size: 15px; color: var(--text-2); text-decoration: none;
  transition: color var(--t);
}
.site-nav a:hover { color: var(--black); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; font: inherit; font-size: 16px; font-weight: 500;
  padding: 16px 48px; text-decoration: none; text-align: center; cursor: pointer;
  border: 1px solid var(--black); border-radius: 0;
  transition: background-color var(--t), border-color var(--t);
}
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: var(--charcoal); border-color: var(--charcoal); }
.btn-outline { background: var(--white); color: var(--black); }
.btn-outline:hover { background: var(--hover-bg); }

/* ---------- Hero ---------- */
.hero { padding: 96px 0; text-align: center; }
.hero-mark { display: block; width: 60px; height: 56px; margin: 0 auto 32px; }
.hero-title {
  font-size: clamp(40px, 9vw, 64px); font-weight: 400;
  letter-spacing: 0.08em; line-height: 1.1;
}
.hero-subtitle {
  margin-top: 16px; font-size: clamp(18px, 4vw, 24px); font-weight: 300; color: var(--text-2);
}
.hero-tagline { margin-top: 40px; font-size: 18px; line-height: 1.8; color: var(--text-2); }
.hero-actions {
  margin-top: 56px; display: flex; flex-direction: column; gap: 16px;
  align-items: stretch; max-width: 320px; margin-left: auto; margin-right: auto;
}

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section-muted { background: var(--muted-bg); }
.section-title {
  font-size: clamp(32px, 6vw, 48px); font-weight: 400; line-height: 1.2;
  text-align: center; margin-bottom: 48px;
}
.section-cta { margin-top: 56px; text-align: center; }

.grid-3 { display: grid; grid-template-columns: 1fr; gap: 48px; }
.item-title { font-size: 20px; font-weight: 500; line-height: 1.4; margin-bottom: 16px; }
.item-text { color: var(--text-2); line-height: 1.8; }
.item-desc { color: var(--text-2); font-size: 16px; line-height: 1.8; margin-bottom: 24px; }
.meta { font-size: 14px; color: var(--text-3); line-height: 1.8; }

/* Services: hairline separators between columns */
.grid-lines { gap: 0; }
.grid-lines .col { padding: 32px 0; border-top: 1px solid var(--line); }
.grid-lines .col:last-child { border-bottom: 1px solid var(--line); }

.badge {
  display: inline-block; margin-top: 16px;
  font-size: 12px; font-weight: 500; letter-spacing: 0.02em;
  color: var(--black); background: var(--white);
  border: 1px solid var(--line-strong); padding: 4px 12px;
}

/* Portfolio plans: thumbnail + lightbox */
.plan { margin: 0 0 24px; }
.plan-open {
  display: block; width: 100%; padding: 0; cursor: zoom-in;
  background: var(--white); border: 1px solid var(--line);
  transition: border-color var(--t);
}
.plan-open:hover { border-color: var(--black); }
.plan-open img {
  display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain;
  padding: 8px; background: var(--white);
}

.lightbox {
  width: 100vw; height: 100vh; max-width: none; max-height: none;
  margin: 0; padding: 56px 16px 16px; border: 0;
  background: var(--white);
  flex-direction: column; align-items: center; justify-content: center; gap: 16px;
}
.lightbox[open] { display: flex; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.6); }
.lightbox-img { max-width: 100%; max-height: calc(100vh - 136px); object-fit: contain; }
.lightbox-caption { font-size: 14px; color: var(--text-2); text-align: center; }
.lightbox-close {
  position: absolute; top: 12px; right: 16px;
  font: inherit; font-size: 14px; color: var(--black); cursor: pointer;
  background: var(--white); border: 1px solid var(--line); padding: 8px 16px;
  transition: border-color var(--t);
}
.lightbox-close:hover { border-color: var(--black); }

/* ---------- Pricing table ---------- */
.table-wrap { max-width: 900px; margin: 0 auto; }
.pricing { width: 100%; border-collapse: collapse; font-size: 16px; }
.pricing th, .pricing td { text-align: left; border-bottom: 1px solid var(--line); }
.pricing th { font-size: 14px; font-weight: 500; color: var(--text-2); padding: 8px 16px 8px 0; line-height: 2.2; }
.pricing td { padding: 8px 16px 8px 0; line-height: 2.2; }

/* Mobile: stack rows */
@media (max-width: 599px) {
  .pricing thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .pricing tr { display: block; padding: 16px 0; border-bottom: 1px solid var(--line); }
  .pricing tr:first-child { border-top: 1px solid var(--line); }
  .pricing td { display: flex; justify-content: space-between; gap: 16px; border: 0; padding: 0; line-height: 2; }
  .pricing td::before { content: attr(data-label); color: var(--text-3); font-size: 14px; }
  .pricing td:first-child { font-weight: 500; }
  .pricing td:first-child::before { content: none; }
}

.note {
  margin-top: 40px; text-align: center; font-size: 14px; color: var(--text-2); line-height: 1.8;
}
.note a { text-underline-offset: 3px; transition: color var(--t); }
.note a:hover { color: var(--charcoal); }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 0; }
.faq-q { font-size: 18px; font-weight: 500; }
.faq-q button {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 24px 0; font: inherit; color: var(--black); text-align: left;
  background: none; border: 0; cursor: pointer;
  transition: opacity var(--t);
}
.faq-q button:hover { opacity: 0.7; }
.faq-icon { font-size: 20px; font-weight: 300; line-height: 1; flex-shrink: 0; width: 16px; text-align: center; }
.faq-a {
  overflow: hidden;
  transition: height 0.3s ease;
}
.faq-a p { padding-bottom: 24px; font-size: 16px; color: var(--text-2); line-height: 1.8; }

/* ---------- Contact form ---------- */
.contact-form { max-width: 600px; margin: 0 auto; }
.field { margin-bottom: 24px; }
.field label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--black);
  padding: 14px 16px; background: var(--white);
  border: 1px solid var(--line); border-radius: 0; box-shadow: none;
  transition: border-color var(--t);
  -webkit-appearance: none; appearance: none;
}
.field textarea { height: 120px; min-height: 120px; resize: vertical; }
.field input:hover, .field textarea:hover { border-color: var(--line-strong); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--black); }
.field input[aria-invalid="true"] { border-color: var(--black); }
.error { min-height: 0; font-size: 13px; color: var(--black); margin-top: 8px; }
.error:empty { display: none; }
.btn-submit { width: 100%; }
.form-status { margin-top: 16px; text-align: center; font-size: 14px; color: var(--text-2); }
.form-status:empty { display: none; }
#contact .note { color: #666666; }

/* ---------- Footer ---------- */
.site-footer { background: var(--black); color: var(--white); padding: 56px 0 32px; font-size: 14px; line-height: 1.8; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; padding-bottom: 48px; }
.footer-logo { margin-bottom: 16px; }
.footer-title { font-weight: 500; margin-bottom: 8px; }
.footer-muted { color: #999999; }
.footer-list a { text-decoration: none; transition: color var(--t); }
.footer-list a:hover { color: var(--line-strong); }
.footer-bottom {
  border-top: 1px solid #333333; padding-top: 32px;
  text-align: center; font-size: 12px; color: #666666;
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 16px; bottom: 16px; z-index: 40;
  font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  text-decoration: none; color: var(--black); background: var(--white);
  border: 1px solid var(--line-strong); padding: 10px 14px;
  opacity: 0; visibility: hidden;
  transition: opacity var(--t), visibility var(--t), background-color var(--t);
}
.to-top.is-visible { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--hover-bg); }

/* ---------- Tablet (768px+) ---------- */
@media (min-width: 768px) {
  .container { padding: 0 40px; }
  .nav-toggle { display: none; }
  .site-nav { display: flex; flex-direction: row; width: auto; padding: 0; gap: 32px; }
  .site-nav a { padding: 0; font-size: 14px; }

  .hero { padding: 120px 0; }
  .hero-actions { flex-direction: row; justify-content: center; max-width: none; }

  .section { padding: 100px 0; }
  .section-title { margin-bottom: 60px; }

  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: 40px; }

  .grid-lines { gap: 0; }
  .grid-lines .col { padding: 8px 32px; border-top: 0; border-bottom: 0; border-left: 1px solid var(--line); }
  .grid-lines .col:first-child { border-left: 0; padding-left: 0; }
  .grid-lines .col:last-child { border-bottom: 0; padding-right: 0; }

  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .site-footer { padding: 60px 0 40px; }

  .to-top { right: 24px; bottom: 24px; }
}

/* ---------- Desktop (1200px+) ---------- */
@media (min-width: 1200px) {
  .container { padding: 0 80px; max-width: 1360px; }
  .container-narrow { max-width: 880px; }
  .grid-3 { gap: 64px; }
  .grid-lines { gap: 0; }
  .grid-lines .col { padding: 8px 48px; }
}