/* ============================================================
   GRAVN — Custom Metal & Wood
   Brand-compliant stylesheet
   Colors: Off Black #18160F | Warm White #F1EFEC | Dark Warm #2E2B24
           Warm Steel #5A5650 | Concrete #9E9A92 | Pale Warm #CCC8C0
   Fonts:  Georgia (display) | Barlow / Barlow Condensed (body/ui)
   ============================================================ */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --off-black:   #18160F;
  --warm-white:  #F1EFEC;
  --dark-warm:   #2E2B24;
  --warm-steel:  #5A5650;
  --concrete:    #9E9A92;
  --pale-warm:   #CCC8C0;
  --accent:      #C4A96B;   /* warm brass — for highlights */

  --font-display: Georgia, 'Times New Roman', serif;
  --font-ui: 'Barlow', 'Barlow Condensed', system-ui, sans-serif;
  --font-condensed: 'Barlow Condensed', 'Barlow', system-ui, sans-serif;

  --max-width: 1200px;
  --nav-h: 72px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--off-black);
  color: var(--warm-white);
  font-family: var(--font-ui);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- Typography helpers ---- */
.section-label {
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-bottom: 1.25rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--font-condensed);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.875rem 2.25rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: none;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--pale-warm);
  color: var(--warm-white);
}
.btn-outline:hover {
  background: var(--warm-white);
  color: var(--off-black);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--warm-steel);
  color: var(--pale-warm);
}
.btn-ghost:hover {
  border-color: var(--pale-warm);
  color: var(--warm-white);
}

.btn-primary {
  background: var(--warm-white);
  color: var(--off-black);
}
.btn-primary:hover {
  background: var(--pale-warm);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
  background: rgba(24, 22, 15, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(204, 200, 192, 0.08);
}

.nav-logo img { height: 28px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--font-condensed);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--concrete);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--warm-white); }

.nav-cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--warm-steel) !important;
  color: var(--pale-warm) !important;
  transition: border-color var(--transition), color var(--transition) !important;
}
.nav-cta:hover {
  border-color: var(--pale-warm) !important;
  color: var(--warm-white) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--warm-white);
  transition: transform var(--transition), opacity var(--transition);
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--warm-steel);
  padding: 0.25rem 0.1rem;
  transition: color var(--transition);
}
.lang-btn:hover { color: var(--warm-white); }
.lang-btn.active { color: var(--pale-warm); }

.lang-sep {
  font-size: 0.6rem;
  color: var(--warm-steel);
  opacity: 0.5;
  user-select: none;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--nav-h) 2rem 6rem;
  background:
    linear-gradient(to bottom, rgba(24,22,15,0.45) 0%, rgba(24,22,15,0.72) 100%),
    url('images/logo-showcase.png') center center / cover no-repeat;
  overflow: hidden;
}

/* Subtle texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255,255,255,0.012) 2px,
      rgba(255,255,255,0.012) 4px
    );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.hero-tagline {
  font-family: var(--font-condensed);
  font-size: clamp(1rem, 2.2vw, 1.375rem);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--warm-white);
  text-shadow: 0 1px 16px rgba(0,0,0,0.85), 0 0 40px rgba(0,0,0,0.6);
  opacity: 0;
  animation: fadeUp 0.9s ease 0.2s forwards;
}

.hero-tagline .separator {
  margin: 0 0.75em;
  color: var(--pale-warm);
  opacity: 0.7;
}

.hero-subtitle {
  font-family: var(--font-ui);
  font-size: clamp(0.875rem, 1.4vw, 1.0625rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--pale-warm);
  text-shadow: 0 1px 12px rgba(0,0,0,0.7);
  max-width: 480px;
  text-align: center;
  line-height: 1.6;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.38s forwards;
}

.hero .btn {
  opacity: 0;
  animation: fadeUp 0.9s ease 0.58s forwards;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 1s forwards;
}

.hero-scroll span {
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--warm-steel);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--warm-steel), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.15); }
}

/* ============================================================
   MANIFESTO
   ============================================================ */
.manifesto {
  background:
    linear-gradient(to bottom, rgba(24,22,15,0.78) 0%, rgba(46,43,36,0.88) 100%),
    url('images/who-are-we.png') center center / cover no-repeat;
  padding: 8rem 0;
  border-top: 1px solid rgba(204, 200, 192, 0.08);
}

.manifesto-label {
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-bottom: 1.5rem;
}

.manifesto-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: normal;
  line-height: 1.25;
  color: var(--warm-white);
  max-width: 720px;
  margin-bottom: 3rem;
}

.manifesto-body {
  max-width: 600px;
  margin-bottom: 5rem;
}

.manifesto-body p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--pale-warm);
  margin-bottom: 1.25rem;
}

.pull-quote {
  border-left: 2px solid var(--warm-steel);
  padding: 0.25rem 0 0.25rem 1.5rem;
  margin: 2rem 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--warm-white);
  quotes: none;
}

.manifesto-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  border-top: 1px solid rgba(204, 200, 192, 0.12);
  padding-top: 4rem;
}

.value { position: relative; }

.value-num {
  display: block;
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--warm-steel);
  margin-bottom: 1rem;
}

.value h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: normal;
  color: var(--warm-white);
  margin-bottom: 0.75rem;
}

.value p {
  font-size: 1rem;
  color: var(--concrete);
  line-height: 1.75;
}

/* ============================================================
   WORK
   ============================================================ */
.work {
  background: var(--dark-warm);
  padding: 8rem 0;
}

.work .container {
  margin-bottom: 4rem;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: normal;
  line-height: 1.25;
  color: var(--warm-white);
  max-width: 680px;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(204, 200, 192, 0.08);
}

.work-item {
  background: var(--dark-warm);
  display: flex;
  flex-direction: column;
}

.work-img {
  width: 100%;
  aspect-ratio: 4/3;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.work-img--tables {
  background:
    linear-gradient(160deg, rgba(24,22,15,0.15) 0%, rgba(24,22,15,0.45) 100%),
    url('images/work-tables.png') center center / cover no-repeat;
}

.work-img--shelves {
  background:
    linear-gradient(160deg, rgba(24,22,15,0.15) 0%, rgba(24,22,15,0.45) 100%),
    url('images/work-shelves.png') center center / cover no-repeat;
}

.work-img--benches {
  background:
    linear-gradient(160deg, rgba(24,22,15,0.15) 0%, rgba(24,22,15,0.45) 100%),
    url('images/work-benches.png') center center / cover no-repeat;
}

.work-img--terrace {
  background:
    linear-gradient(160deg, rgba(24,22,15,0.15) 0%, rgba(24,22,15,0.45) 100%),
    url('images/work-terrace.png') center center / cover no-repeat;
}

.work-info {
  padding: 2.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.work-cat {
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--warm-steel);
}

.work-info h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: normal;
  color: var(--warm-white);
  line-height: 1.3;
}

.work-info p {
  font-size: 1rem;
  color: var(--concrete);
  line-height: 1.75;
  flex: 1;
}

.work-note {
  text-align: center;
  font-family: var(--font-condensed);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--warm-steel);
  margin-top: 3rem;
  padding: 0 1rem;
}

.work-item--custom {
  background: var(--off-black);
  border-top: none;
  grid-column: 1 / -1;
}

.work-item--custom .work-info {
  justify-content: center;
  min-height: 280px;
}

.work-item--custom .work-info h3 {
  font-size: 1.625rem;
  max-width: 400px;
}

/* ============================================================
   PROCESS
   ============================================================ */
.process {
  background:
    linear-gradient(to bottom, rgba(24,22,15,0.82) 0%, rgba(24,22,15,0.92) 100%),
    url('images/process-workshop.png') center center / cover no-repeat;
  padding: 8rem 0;
  border-top: 1px solid rgba(204, 200, 192, 0.08);
}

.process .section-heading {
  margin-bottom: 5rem;
}

.process-steps {
  display: flex;
  flex-direction: column;
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
}

.step-line {
  width: 1px;
  height: 40px;
  background: rgba(204, 200, 192, 0.15);
  margin-left: 39px;
}

.step-num {
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--warm-steel);
  padding-top: 0.2rem;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: normal;
  color: var(--warm-white);
  margin-bottom: 0.75rem;
}

.step-content p {
  font-size: 1.125rem;
  color: var(--concrete);
  line-height: 1.85;
  max-width: 560px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--off-black);
  padding: 8rem 0;
  border-top: 1px solid rgba(204, 200, 192, 0.08);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 6rem;
  align-items: start;
}

.contact .section-heading {
  margin-bottom: 1.75rem;
}

.contact-desc {
  font-size: 1rem;
  color: var(--concrete);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-link {
  font-family: var(--font-condensed);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--pale-warm);
  transition: color var(--transition);
}
.contact-link:hover { color: var(--warm-white); }

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--warm-steel);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(241, 239, 236, 0.04);
  border: 1px solid rgba(204, 200, 192, 0.15);
  color: var(--warm-white);
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 300;
  padding: 0.875rem 1rem;
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 0;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--warm-steel);
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' viewBox='0 0 12 7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A5650' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--dark-warm);
  color: var(--warm-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(204, 200, 192, 0.4);
  background: rgba(241, 239, 236, 0.06);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  align-self: flex-start;
}

.form-notice {
  font-family: var(--font-condensed);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  padding: 0.25rem 0;
  min-height: 1.25rem;
}
.form-notice.success { color: #8BC48A; }
.form-notice.error { color: #D97F7F; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #100F0A;
  border-top: 1px solid rgba(204, 200, 192, 0.08);
  padding: 4rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-logo { opacity: 0.7; }

.footer-tagline {
  font-family: var(--font-condensed);
  font-size: 0.6875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--warm-steel);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--warm-steel);
  letter-spacing: 0.05em;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .manifesto-values {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .work-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav { padding: 0 1.5rem; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(24, 22, 15, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    border-bottom: 1px solid rgba(204, 200, 192, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a { font-size: 1rem; letter-spacing: 0.1em; }
  .nav-cta { padding: 0.75rem 0 !important; border: none !important; }

  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .manifesto, .process, .work, .contact {
    padding: 5rem 0;
  }

  .container { padding: 0 1.5rem; }

  .work .container { margin-bottom: 2.5rem; }

  .work-info { padding: 1.75rem; }

  .form-row {
    grid-template-columns: 1fr;
  }

  .step {
    grid-template-columns: 48px 1fr;
    gap: 1.25rem;
  }

  .step-line { margin-left: 23px; }
}

@media (max-width: 480px) {
  .hero-tagline { letter-spacing: 0.2em; }
  .manifesto-heading,
  .section-heading { font-size: clamp(1.5rem, 5vw, 2rem); }
}