/* ================================================================
   ARCHSTONE — main.css
   Marmură & Granit · Sibiu
   Single source of truth for shared UI styles
   ================================================================ */

/* ── 1. CUSTOM PROPERTIES ─────────────────────────────────────── */
:root {
  /* Stone palette — warm charcoal + cream + bronze accent */
  --bg:             #f7f5f1;     /* warm cream */
  --surface:        #ffffff;
  --surface-soft:   #efebe3;     /* slightly darker cream for cards */
  --text:           #1a1816;     /* warm near-black */
  --text-soft:      #2c2824;
  --text-muted:     #6b6660;
  --border:         #e0d8c8;     /* warm beige border */
  --border-soft:    #ebe5d8;
  --accent:         #8a6e3a;     /* bronze */
  --accent-hover:   #6e5829;
  --accent-soft:    rgba(138,110,58,0.08);

  /* States */
  --success:        #4a7a5a;
  --error:          #a04040;
  --warning:        #c19a3a;

  /* Typography */
  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Footer — always dark */
  --footer-bg:    #0f0e0c;
  --footer-text:  rgba(232, 228, 220, 0.5);
  --footer-link:  rgba(232, 228, 220, 0.75);
}

/* ── Dark mode overrides ──────────────────────────────────────── */
[data-theme="dark"] {
  --bg:             #1a1816;
  --surface:        #25221f;
  --surface-soft:   #2d2a26;
  --text:           #e8e4dc;
  --text-soft:      #d4cfc4;
  --text-muted:     #888378;
  --border:         #3a3633;
  --border-soft:    #2e2a27;
  --accent:         #c9a87a;
  --accent-hover:   #d4b687;
  --accent-soft:    rgba(201,168,122,0.10);
}

/* ── 2. RESET ─────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }
body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ── 3. (Hero pattern background is now scoped to homepage hero only — see index.html inline) ─ */

/* ── 4. PAGE LOADER ───────────────────────────────────────────── */
#page-loader {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  pointer-events: all;
  transition: opacity 0.5s ease;
}
#page-loader.exit { opacity: 0; pointer-events: none; }
#page-loader .loader-logo {
  display: block;
  width: 56px; height: 56px;
  background-color: var(--accent);
  -webkit-mask: url('/assets/logo-mark.svg') no-repeat center / contain;
          mask: url('/assets/logo-mark.svg') no-repeat center / contain;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.94); } }

/* ── 5. SKIP TO CONTENT ───────────────────────────────────────── */
.skip-to-content {
  position: absolute; left: -9999px; top: 0;
  background: var(--text); color: var(--bg);
  padding: 0.75rem 1.5rem; z-index: 10000;
  font-size: 0.85rem; font-weight: 500;
}
.skip-to-content:focus { left: 1rem; top: 1rem; }

/* ── 6. NAVIGATION ────────────────────────────────────────────── */
nav#mainNav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.4rem 3rem;
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, padding 0.3s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}
nav#mainNav.scrolled {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  padding: 0.85rem 3rem;
  border-bottom-color: var(--border-soft);
}
/* Logo as CSS mask — color follows --text variable, theme-aware */
.nav-logo {
  display: block;
  width: 36px; height: 36px;
  background-color: var(--text);
  -webkit-mask: url('/assets/logo-mark.svg') no-repeat center / contain;
          mask: url('/assets/logo-mark.svg') no-repeat center / contain;
  transition: background-color 0.3s ease;
}
.nav-logo:hover { background-color: var(--accent); }
.nav-logo img { display: none; } /* fallback img inside is hidden */
.nav-links {
  display: flex; align-items: center;
  list-style: none; gap: 2.2rem;
  font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500;
}
.nav-links a {
  color: var(--text-soft);
  transition: color 0.3s ease;
  position: relative;
  padding: 0.3rem 0;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 0.65rem 1.3rem;
  border-radius: 1px;
  transition: background 0.3s ease, transform 0.2s ease;
}
.nav-links a.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* Theme switch (small pill) */
.theme-switch {
  position: relative;
  width: 44px; height: 24px;
  background: var(--border);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.3s ease;
  padding: 0;
}
.switch-circle {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: var(--surface);
  border-radius: 50%;
  transition: transform 0.3s ease, background 0.3s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
[data-theme="dark"] .theme-switch { background: var(--accent-hover); }
[data-theme="dark"] .switch-circle { transform: translateX(20px); background: var(--text); }

/* ── 7. BURGER MENU & MOBILE OVERLAY ──────────────────────────── */
.burger {
  position: fixed; top: 1.5rem; right: 1.5rem; z-index: 200;
  width: 36px; height: 36px;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  background: transparent; border: none;
  padding: 0;
}
.burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1), opacity 0.2s ease;
  transform-origin: center;
}
/* When open, lines collapse into an X. Distance between bar centers = height+gap = 7.5px */
.burger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 150;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  gap: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-overlay.open { transform: translateX(0); }
.overlay-top { position: absolute; top: 1.5rem; left: 2rem; }
.overlay-logo {
  display: block;
  width: 32px; height: 32px;
  background-color: var(--text);
  -webkit-mask: url('/assets/logo-mark.svg') no-repeat center / contain;
          mask: url('/assets/logo-mark.svg') no-repeat center / contain;
}
.overlay-logo img { display: none; }
.mobile-link {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.02em;
  transition: color 0.3s ease;
}
.mobile-link:hover { color: var(--accent); }

/* ── 8. SECTIONS ──────────────────────────────────────────────── */
section { padding: 7rem 3rem; position: relative; z-index: 1; }
.section-label {
  font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 1.5rem; font-weight: 600;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}
.section-line {
  width: 60px; height: 1px; background: var(--accent);
  margin: 1.5rem 0 2.5rem;
}

/* ── 9. BUTTONS ───────────────────────────────────────────────── */
.btn-primary, .btn-ghost {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 1.1rem 2.4rem;
  border-radius: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--text); }
.btn-ghost:hover { background: var(--text); color: var(--bg); }
.hero-cta { margin-top: 2.5rem; display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.view-all-link {
  display: inline-block;
  font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.view-all-link:hover { border-color: var(--accent); }

/* ── 10. REVEAL ANIMATIONS ────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }

/* ── 11. SCROLL NAV (vertical dots on right) ──────────────────── */
.scroll-nav {
  position: fixed; right: 2rem; top: 50%; transform: translateY(-50%) translateX(20px);
  z-index: 50;
  display: flex; flex-direction: column; align-items: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.scroll-nav.visible { opacity: 1; transform: translateY(-50%) translateX(0); pointer-events: all; }
.scroll-nav__item { position: relative; display: flex; align-items: center; cursor: pointer; padding: 4px; }
.scroll-nav__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-muted); opacity: 0.4;
  transition: all 0.3s ease;
}
.scroll-nav__dot.passed { background: var(--accent); opacity: 0.6; }
.scroll-nav__dot.active { background: var(--accent); opacity: 1; transform: scale(1.5); box-shadow: 0 0 0 4px var(--accent-soft); }
.scroll-nav__line { width: 1px; height: 28px; background: var(--text-muted); opacity: 0.3; margin: 2px 0; transition: background 0.3s; }
.scroll-nav__line.passed { background: var(--accent); opacity: 0.8; }
.scroll-nav__label {
  position: absolute; right: 100%; margin-right: 14px; top: 50%; transform: translateY(-50%);
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 500;
  white-space: nowrap; color: var(--text);
  background: var(--surface); padding: 4px 10px; border-radius: 1px;
  opacity: 0; transform: translateY(-50%) translateX(8px);
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}
.scroll-nav__item:hover .scroll-nav__label { opacity: 1; transform: translateY(-50%) translateX(0); }

/* ── 12. CONSENT TOGGLE (custom checkbox) ─────────────────────── */
.consent-row { padding-top: 0.5rem; }
.consent-toggle {
  display: flex; align-items: flex-start; gap: 0.75rem;
  cursor: pointer; font-size: 0.82rem; color: var(--text-muted);
  line-height: 1.5;
}
.consent-toggle input[type="checkbox"] {
  position: absolute; opacity: 0; pointer-events: none;
}
.consent-check {
  flex-shrink: 0;
  width: 18px; height: 18px;
  border: 1px solid var(--border);
  background: var(--surface);
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: 1px;
  transition: all 0.2s ease;
}
.consent-check svg { width: 12px; height: 12px; color: var(--accent); opacity: 0; transition: opacity 0.2s; }
.consent-toggle input[type="checkbox"]:checked + .consent-check { border-color: var(--accent); background: var(--accent-soft); }
.consent-toggle input[type="checkbox"]:checked + .consent-check svg { opacity: 1; }
.consent-text a { color: var(--accent); border-bottom: 1px solid var(--accent); }

/* ── 13. FORM STATUS ──────────────────────────────────────────── */
.form-status { font-size: 0.85rem; padding: 0.75rem 1rem; display: none; border-radius: 1px; }
.form-status.success { background: rgba(74,122,90,0.1); color: var(--success); border-left: 3px solid var(--success); display: block; }
.form-status.error { background: rgba(160,64,64,0.1); color: var(--error); border-left: 3px solid var(--error); display: block; }
.hp-field { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

/* ── 14. FOOTER ───────────────────────────────────────────────── */
footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 3rem 3rem 2rem;
  text-align: center;
  font-size: 0.82rem;
  display: flex; flex-direction: column; gap: 1.5rem; align-items: center;
  position: relative; z-index: 1;
}
footer .footer-logo {
  display: block;
  width: 32px; height: 32px;
  background-color: rgba(232,228,220,0.7);
  -webkit-mask: url('/assets/logo-mark.svg') no-repeat center / contain;
          mask: url('/assets/logo-mark.svg') no-repeat center / contain;
  margin-bottom: 0.5rem;
}
footer .footer-logo img { display: none; }
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center; font-size: 0.8rem; }
.footer-links a { color: var(--footer-link); transition: color 0.3s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-meta { display: flex; gap: 2rem; flex-wrap: wrap; justify-content: center; padding-top: 1.5rem; border-top: 1px solid rgba(232,228,220,0.08); width: 100%; max-width: 800px; }

/* ── 15. WHATSAPP FLOATING BUTTON ─────────────────────────────── */
.wa-float {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.wa-float:hover { transform: scale(1.1); box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5); }
.wa-float svg { width: 28px; height: 28px; fill: #fff; }
.wa-float-pulse {
  position: absolute; inset: 0; border-radius: 50%;
  background: #25D366; opacity: 0.4;
  animation: waPulse 2s ease infinite;
}
@keyframes waPulse { 0% { transform: scale(1); opacity: 0.4; } 100% { transform: scale(1.6); opacity: 0; } }
.wa-float-tip {
  position: absolute; right: 100%; margin-right: 12px; top: 50%; transform: translateY(-50%);
  background: var(--text); color: var(--bg);
  padding: 6px 12px; border-radius: 1px;
  font-size: 0.75rem; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.wa-float:hover .wa-float-tip { opacity: 1; }

/* ── 16. COOKIE BANNER ────────────────────────────────────────── */
.cookie-banner {
  position: fixed; bottom: 1rem; left: 1rem; right: 1rem;
  max-width: 480px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  z-index: 80;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  border-radius: 2px;
  transform: translateY(140%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.83rem;
  line-height: 1.5;
  display: flex; flex-direction: column; gap: 1rem;
}
.cookie-banner.show { transform: translateY(0); }
.cookie-banner-text { color: var(--text-soft); }
.cookie-banner-text a { color: var(--accent); border-bottom: 1px solid var(--accent); }
.cookie-banner-actions { display: flex; gap: 0.75rem; }
.cookie-banner-btn {
  font-family: var(--sans);
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--border);
  cursor: pointer;
  border-radius: 1px;
  transition: all 0.3s ease;
}
.cookie-banner-btn.accept { background: var(--accent); color: #fff; border-color: var(--accent); }
.cookie-banner-btn.accept:hover { background: var(--accent-hover); }
.cookie-banner-btn.decline { background: transparent; color: var(--text-muted); }
.cookie-banner-btn.decline:hover { color: var(--text); border-color: var(--text); }

/* ── 17. MATERIAL CARD (catalog page) ─────────────────────────── */
.material-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 2px;
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.3s ease;
  cursor: pointer;
  position: relative;
}
.material-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.10); border-color: var(--border); }
.material-img-wrap { aspect-ratio: 4/5; overflow: hidden; background: var(--surface-soft); position: relative; }
.material-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.material-card:hover .material-img-wrap img { transform: scale(1.05); }
.material-img-empty {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  background: var(--surface-soft); color: var(--text-muted); opacity: 0.5;
}
.material-img-empty svg { width: 48px; height: 48px; }
.material-info { padding: 1.4rem 1.5rem 1.6rem; }
.material-type {
  font-size: 0.62rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 0.5rem;
}
.material-name { font-family: var(--serif); font-size: 1.45rem; font-weight: 500; color: var(--text); line-height: 1.2; margin-bottom: 0.4rem; }
.material-meta { font-size: 0.78rem; color: var(--text-muted); }

/* Catalog filter bar */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 0.6rem;
  padding: 0 0 2.5rem; align-items: center;
}
.filter-btn {
  font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 500;
  padding: 0.55rem 1.1rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 1px;
  transition: all 0.25s ease;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.filter-label {
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-muted); font-weight: 500; margin-right: 0.4rem;
}

/* ── 18. PROJECT CARD (gallery page) ──────────────────────────── */
.project-card {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--surface-soft);
  aspect-ratio: 4/3;
  cursor: pointer;
  border-radius: 2px;
}
.project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease, filter 0.7s ease; filter: brightness(0.92); }
.project-card:hover img { transform: scale(1.05); filter: brightness(1); }
.project-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,14,12,0.85) 0%, rgba(15,14,12,0.4) 40%, transparent 70%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 1.8rem;
  opacity: 0.85;
  transition: opacity 0.4s ease;
}
.project-card:hover .project-card-overlay { opacity: 1; }
.project-card-cat { font-size: 0.65rem; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(201,168,122,0.95); font-weight: 600; margin-bottom: 0.4rem; }
.project-card-title { font-family: var(--serif); font-size: 1.4rem; font-weight: 500; color: #fff; line-height: 1.25; }
.project-card-meta { font-size: 0.75rem; color: rgba(255,255,255,0.6); margin-top: 0.3rem; }

/* ── 19. RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  section { padding: 5rem 2rem; }
  nav#mainNav { padding: 1rem 2rem; }
  nav#mainNav.scrolled { padding: 0.7rem 2rem; }
  .scroll-nav { display: none; }
}
@media (max-width: 768px) {
  nav#mainNav .nav-links { display: none; }
  nav#mainNav { padding: 1rem 1.5rem; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-soft); }
  .burger { display: flex; }
  section { padding: 4rem 1.5rem; }
  .wa-float { width: 50px; height: 50px; bottom: 1.5rem; right: 1.5rem; }
  .wa-float svg { width: 24px; height: 24px; }
  footer { padding: 2.5rem 1.5rem 1.5rem; }
  .footer-meta { flex-direction: column; gap: 0.5rem; }
  .cookie-banner { left: 0.5rem; right: 0.5rem; bottom: 0.5rem; padding: 1rem; }
}