/* =========================================================
   AEPAX ENGINEERING — Stylesheet
   Color system derived from the original Aepax solar flyer
   ========================================================= */

:root {
  /* --- Light theme (default) --- */
  --bg:           #ffffff;
  --bg-alt:       #f5f5f2;
  --bg-dark:      #0e2a1c;        /* deep section background (e.g. contact) */
  --bg-elev:      #ffffff;        /* elevated surfaces — cards, panels */
  --forest:       #14532d;
  --forest-2:     #1f6e3c;
  --gold:         #d4a017;
  --gold-soft:    #f0c34a;
  --ink:          #0b1410;
  --text:         #1f2a24;
  --muted:        #5a6660;
  --line:         #d8dcd6;
  --line-strong:  #b8bfb8;

  /* Surfaces that adapt per-theme */
  --nav-bg:       rgba(255, 255, 255, 0.96);
  --grid-line:    rgba(20, 83, 45, 0.04);
  --tag-bg:       rgba(255, 255, 255, 0.92);
  --hover-surface: rgba(255, 255, 255, 0.04);

  --maxw: 1280px;
  --gutter: clamp(1.25rem, 3.5vw, 2.5rem);

  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Animation primitives */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 0.18s;
  --t-med:  0.35s;
  --t-slow: 0.6s;
}

/* --- Dark theme --- */
:root[data-theme="dark"] {
  --bg:            #0a1410;
  --bg-alt:        #111d17;
  --bg-dark:       #050a07;        /* even deeper for the contact-like section */
  --bg-elev:       #142019;        /* card/panel surface */
  --forest:        #4ea36b;        /* lifted green for contrast on dark */
  --forest-2:      #6ec48a;
  --gold:          #e8be3f;
  --gold-soft:     #f3d169;
  --ink:           #f3f5f1;        /* near-white headings */
  --text:          #d6dcd5;        /* body */
  --muted:         #8a958e;
  --line:          #1f2c25;
  --line-strong:   #2a3a31;

  --nav-bg:        rgba(10, 20, 16, 0.85);
  --grid-line:     rgba(78, 163, 107, 0.06);
  --tag-bg:        rgba(20, 32, 25, 0.92);
  --hover-surface: rgba(255, 255, 255, 0.03);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Smooth theme switch */
  transition: background-color var(--t-med) var(--ease-out), color var(--t-med) var(--ease-out);
}

/* Allow themed elements to transition smoothly when toggling */
.nav, .hero, .about, .services, .approach, .resources, .contact, footer,
.hero-stats, .hero-stats-head, .stat-row, .stat-val, .stat-label, .stat-label small,
.section-title, .section-sub, .section-head-num, .label,
.principle, .principle h3, .principle p,
.service, .service h3, .service-tag, .service li, .service-icon, .service-header, .service-id,
.step, .step h4, .step p, .step-num,
.flyer, .flyer h3, .flyer p, .flyer-preview, .flyer-spec, .flyer-tag, .flyer-downloads, .flyer-dl,
.contact-channels, .contact-row, .contact-row-value, .contact-row-label,
.brand, .brand-text small, .nav-links a, .nav-toggle, .nav-cta,
.btn, .btn-primary, .btn-secondary,
.footer-inner, .footer-brand {
  transition:
    background-color var(--t-med) var(--ease-out),
    color var(--t-med) var(--ease-out),
    border-color var(--t-med) var(--ease-out);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* Branded focus rings — keyboard users get a clear, accessible indicator */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--forest);
  outline-offset: 3px;
  border-radius: 2px;
}
.btn:focus-visible,
.nav-cta:focus-visible,
.flyer-dl:focus-visible {
  outline-offset: 3px;
}

/* Sticky-nav offset for anchor jumps */
:where(section, .hero) { scroll-margin-top: 80px; }

/* Skip-to-content link — visible only when focused */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  background: var(--forest);
  color: #fff;
  padding: 0.65rem 1rem;
  border-radius: 2px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: top var(--t-fast) var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

.label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--forest);
}

/* =========================================================
   NAVIGATION
   ========================================================= */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0.95rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
}
.brand {
  display: flex; align-items: center; gap: 0.7rem;
  font-weight: 600; font-size: 1rem; color: var(--ink); letter-spacing: -0.005em;
}
.brand-mark {
  width: auto; height: 38px; display: block;
  transition: transform var(--t-fast) var(--ease-out);
}
.brand:hover .brand-mark { transform: translateY(-1px) rotate(-2deg); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small {
  font-family: var(--font-mono); font-size: 0.65rem; color: var(--muted);
  letter-spacing: 0.05em; text-transform: uppercase; font-weight: 400;
}
.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { font-size: 0.875rem; font-weight: 400; color: var(--text); transition: color var(--t-fast) var(--ease-out); }
.nav-links a:hover { color: var(--forest); }
.nav-cta {
  background: var(--forest); color: #fff !important;
  padding: 0.55rem 1.1rem; font-size: 0.85rem; font-weight: 500;
  border-radius: 2px; transition: background var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.nav-cta:hover { background: var(--forest-2); transform: translateY(-1px); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong);
  padding: 0.4rem 0.55rem; color: var(--ink); border-radius: 2px;
  transition: border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.nav-toggle:hover { border-color: var(--forest); color: var(--forest); }

/* Theme toggle */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--ink);
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--forest); color: var(--forest); transform: translateY(-1px); }
.theme-toggle:active { transform: translateY(0); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
.theme-toggle svg { transition: transform var(--t-med) var(--ease-out); }
.theme-toggle:hover svg { transform: rotate(15deg); }

@media (max-width: 880px) {
  .nav-links {
    position: fixed; top: 62px; left: 0; right: 0;
    flex-direction: column; background: var(--bg);
    padding: 1.5rem var(--gutter); gap: 1.25rem;
    align-items: flex-start; border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform var(--t-med) var(--ease-out);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: inline-flex; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20,83,45,0.02), rgba(20,83,45,0)), var(--bg);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.6), rgba(0,0,0,0) 80%);
          mask-image: linear-gradient(180deg, rgba(0,0,0,0.6), rgba(0,0,0,0) 80%);
}
.hero-inner {
  position: relative;
  display: grid; grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: end;
}
@media (max-width: 880px) { .hero-inner { grid-template-columns: 1fr; } }

.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem; color: var(--muted);
  letter-spacing: 0.05em; margin-bottom: 1.5rem;
  display: flex; gap: 1.25rem; flex-wrap: wrap;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 0.4rem; }
.hero-meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }

.hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 4.25rem);
  font-weight: 600; line-height: 1.05;
  letter-spacing: -0.025em; color: var(--ink);
  max-width: 18ch;
  animation: fadeUp 0.7s var(--ease-out) 0.1s both;
}
.hero h1 .accent { color: var(--forest); }

.hero-meta { animation: fadeUp 0.6s var(--ease-out) 0s both; }
.hero-sub  { animation: fadeUp 0.7s var(--ease-out) 0.2s both; }
.hero-actions { animation: fadeUp 0.7s var(--ease-out) 0.3s both; }
.hero-stats { animation: fadeUp 0.7s var(--ease-out) 0.4s both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  margin-top: 1.75rem; font-size: 1.0625rem; color: var(--muted);
  max-width: 52ch; line-height: 1.65;
}
.hero-actions { margin-top: 2.25rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.4rem; border-radius: 2px;
  font-size: 0.875rem; font-weight: 500;
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              transform var(--t-fast) var(--ease-out),
              box-shadow var(--t-fast) var(--ease-out);
  border: 1px solid transparent;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn svg { transition: transform var(--t-fast) var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }

.btn-primary { background: var(--forest); color: #fff; }
.btn-primary:hover { background: var(--forest-2); box-shadow: 0 6px 18px -8px rgba(20, 83, 45, 0.5); }
.btn-secondary { background: var(--bg-elev); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--forest); color: var(--forest); }

.hero-stats { border: 1px solid var(--line); background: var(--bg-elev); border-radius: 2px; }
.hero-stats-head {
  padding: 0.7rem 1.1rem; border-bottom: 1px solid var(--line); background: var(--bg-alt);
  display: flex; justify-content: space-between; align-items: center;
}
.hero-stats-head .label { color: var(--muted); }
.hero-stats-head .status {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--forest);
}
.hero-stats-head .status::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--forest);
  box-shadow: 0 0 0 3px rgba(20,83,45,0.15);
  animation: pulse 2.4s var(--ease-in-out) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(20,83,45,0.15); }
  50%      { box-shadow: 0 0 0 6px rgba(20,83,45,0.06); }
}
.stat-row {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem;
  align-items: baseline; padding: 1.1rem; border-bottom: 1px solid var(--line);
}
.stat-row:last-child { border-bottom: none; }
.stat-label { font-size: 0.875rem; color: var(--text); font-weight: 500; }
.stat-label small {
  display: block; font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--muted); font-weight: 400; margin-top: 0.15rem;
}
.stat-val { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 500; color: var(--forest); }

/* =========================================================
   SECTION SCAFFOLDING
   ========================================================= */
section { padding: clamp(4rem, 8vw, 6.5rem) 0; }

.section-head {
  display: grid; grid-template-columns: 1fr 1.6fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
@media (max-width: 880px) { .section-head { grid-template-columns: 1fr; gap: 1.25rem; } }
.section-head-meta { display: flex; flex-direction: column; gap: 0.6rem; }
.section-head-num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); letter-spacing: 0.05em; }
.section-title { font-size: clamp(1.6rem, 3.2vw, 2.5rem); font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; color: var(--ink); }
.section-sub { margin-top: 1rem; color: var(--muted); font-size: 1.025rem; line-height: 1.65; max-width: 62ch; }

/* =========================================================
   ABOUT
   ========================================================= */
.about { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.principles {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0; border-top: 1px solid var(--line);
}
.principle {
  padding: 1.75rem 1.5rem 1.75rem 0;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.principle:last-child { border-right: none; }
.principle:not(:first-child) { padding-left: 1.5rem; }
@media (max-width: 700px) {
  .principle { border-right: none; padding-left: 0 !important; }
}
.principle-num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gold); margin-bottom: 0.75rem; display: block; }
.principle h3 { font-size: 1.0625rem; font-weight: 600; color: var(--ink); margin-bottom: 0.45rem; letter-spacing: -0.005em; }
.principle p { font-size: 0.92rem; color: var(--muted); line-height: 1.6; }

/* =========================================================
   SERVICES
   ========================================================= */
.service-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 0; border: 1px solid var(--line); border-radius: 2px; background: var(--bg-elev);
}
.service {
  padding: 1.75rem 1.6rem 2rem;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-med) var(--ease-out),
              border-color var(--t-med) var(--ease-out);
  position: relative;
}
.service:hover { background: var(--bg-alt); }
.service:last-child { border-right: none; border-bottom: none; }

.service-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding-bottom: 1rem; margin-bottom: 1.25rem; border-bottom: 1px solid var(--line);
}
.service-id { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.05em; }
.service-icon {
  width: 36px; height: 36px; border: 1px solid var(--line-strong); border-radius: 2px;
  display: grid; place-items: center; color: var(--forest); background: var(--bg-elev);
  transition: transform var(--t-med) var(--ease-out), border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.service:hover .service-icon { transform: translateY(-2px); border-color: var(--forest); }
.service h3 { font-size: 1.25rem; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; margin-bottom: 0.3rem; }
.service-tag { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 1.1rem; }
.service ul { list-style: none; display: grid; gap: 0.45rem; }
.service li { font-size: 0.895rem; color: var(--text); padding-left: 1rem; position: relative; line-height: 1.5; }
.service li::before {
  content: ""; position: absolute; left: 0; top: 0.55rem;
  width: 6px; height: 1px; background: var(--forest);
}

/* =========================================================
   APPROACH
   ========================================================= */
.approach { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; border: 1px solid var(--line); background: var(--bg-elev);
}
@media (max-width: 880px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .steps { grid-template-columns: 1fr; } }
.step { padding: 1.75rem 1.5rem 2rem; border-right: 1px solid var(--line); position: relative; }
.step:last-child { border-right: none; }
@media (max-width: 880px) {
  .step:nth-child(2n) { border-right: none; }
  .step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 540px) {
  .step { border-right: none; border-bottom: 1px solid var(--line); }
  .step:last-child { border-bottom: none; }
}
.step-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--gold); letter-spacing: 0.05em; margin-bottom: 1rem; display: block; }
.step h4 { font-size: 1.1rem; font-weight: 600; color: var(--ink); margin-bottom: 0.5rem; letter-spacing: -0.005em; }
.step p { font-size: 0.9rem; color: var(--muted); line-height: 1.6; }

/* =========================================================
   RESOURCES
   ========================================================= */
.resources { background: var(--bg); }
.flyer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1.5rem; }
.flyer {
  border: 1px solid var(--line); border-radius: 2px; background: var(--bg-elev);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color var(--t-fast) var(--ease-out),
              transform var(--t-med) var(--ease-out),
              box-shadow var(--t-med) var(--ease-out);
  will-change: transform;
}
.flyer:hover {
  border-color: var(--forest);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px -16px rgba(0, 0, 0, 0.18);
}
.flyer-preview {
  aspect-ratio: 4 / 3; background: var(--bg-alt);
  border-bottom: 1px solid var(--line); overflow: hidden; position: relative;
}
.flyer-preview img {
  width: 100%; height: 100%; object-fit: cover; object-position: top center;
  transition: transform var(--t-slow) var(--ease-out);
}
.flyer:hover .flyer-preview img { transform: scale(1.03); }
.flyer-spec {
  position: absolute; top: 0.75rem; left: 0.75rem; z-index: 1;
  font-family: var(--font-mono); font-size: 0.65rem; color: var(--ink);
  background: var(--tag-bg); padding: 0.25rem 0.5rem;
  border-radius: 2px; letter-spacing: 0.05em; text-transform: uppercase;
}
.flyer-body { padding: 1.25rem 1.35rem 1.4rem; display: flex; flex-direction: column; flex: 1; gap: 0.5rem; }
.flyer-tag { font-family: var(--font-mono); font-size: 0.7rem; color: var(--forest); text-transform: uppercase; letter-spacing: 0.06em; }
.flyer h3 { font-size: 1.075rem; font-weight: 600; color: var(--ink); letter-spacing: -0.005em; }
.flyer p { font-size: 0.88rem; color: var(--muted); line-height: 1.55; margin-bottom: 0.5rem; }
.flyer-downloads { margin-top: auto; padding-top: 0.85rem; border-top: 1px solid var(--line); display: flex; gap: 0.5rem; flex-wrap: wrap; }
.flyer-dl {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 0.85rem; background: var(--forest); color: #fff;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
  border-radius: 2px; letter-spacing: 0.03em;
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              transform var(--t-fast) var(--ease-out);
}
.flyer-dl:hover { background: var(--forest-2); transform: translateY(-1px); }
.flyer-dl:active { transform: translateY(0); }
.flyer-dl.alt { background: var(--bg-elev); color: var(--ink); border: 1px solid var(--line-strong); }
.flyer-dl.alt:hover { border-color: var(--forest); color: var(--forest); }

/* Pending / in-preparation flyer card variant */
.flyer.is-pending { background: var(--bg-alt); }
.flyer.is-pending:hover { transform: none; box-shadow: none; }
.flyer.is-pending .flyer-preview { display: grid; place-items: center; background: var(--bg-alt); }
.flyer.is-pending:hover .flyer-preview img { transform: none; }
.flyer-pending-inner { text-align: center; padding: 1.5rem; }
.flyer-pending-icon { margin: 0 auto 0.85rem; color: var(--muted); }
.flyer-pending-title { font-size: 0.95rem; color: var(--ink); font-weight: 500; }
.flyer-pending-sub { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); margin-top: 0.3rem; }
.flyer-tag-muted { color: var(--muted) !important; }

/* Clickable preview (low-res thumb → opens HD in lightbox) */
.flyer-preview-btn {
  display: block; width: 100%; padding: 0; margin: 0; border: none;
  border-bottom: 1px solid var(--line); font: inherit; text-align: left;
  cursor: zoom-in; -webkit-appearance: none; appearance: none;
}
.flyer-hd-badge {
  position: absolute; bottom: 0.75rem; right: 0.75rem; z-index: 1;
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: #fff; background: rgba(10, 20, 16, 0.72);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  padding: 0.3rem 0.55rem; border-radius: 2px;
  opacity: 0; transform: translateY(4px);
  transition: opacity var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.flyer-preview-btn:hover .flyer-hd-badge,
.flyer-preview-btn:focus-visible .flyer-hd-badge { opacity: 1; transform: none; }
@media (hover: none) { .flyer-hd-badge { opacity: 1; transform: none; } }

/* =========================================================
   LIGHTBOX
   ========================================================= */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none;
  align-items: center; justify-content: center; padding: clamp(1rem, 4vw, 3rem);
}
.lightbox.is-open { display: flex; }
.lightbox-backdrop {
  position: absolute; inset: 0; background: rgba(8, 14, 11, 0.86);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  animation: lb-fade var(--t-med) var(--ease-out);
}
.lightbox-dialog {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  align-items: center; gap: 0.85rem; max-width: 100%; max-height: 100%;
  animation: lb-rise var(--t-med) var(--ease-out);
}
.lightbox-close {
  position: absolute; top: -2.6rem; right: 0;
  display: grid; place-items: center; width: 2.4rem; height: 2.4rem;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%; color: #fff; cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out);
}
.lightbox-close:hover { background: rgba(255,255,255,0.22); }
.lightbox-stage { position: relative; display: grid; place-items: center; min-width: 60px; min-height: 60px; }
.lightbox-img {
  max-width: 100%; max-height: calc(100vh - 8rem);
  border-radius: 2px; box-shadow: 0 24px 60px -20px rgba(0,0,0,0.6);
  background: var(--bg-alt); opacity: 0; transition: opacity var(--t-med) var(--ease-out);
}
.lightbox-img.is-loaded { opacity: 1; }
.lightbox-stage.is-ready .lightbox-spinner { display: none; }
.lightbox-spinner {
  position: absolute; width: 34px; height: 34px; border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.25); border-top-color: #fff;
  animation: lb-spin 0.8s linear infinite;
}
.lightbox-caption {
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em;
  color: rgba(255,255,255,0.75); text-transform: uppercase; text-align: center;
}
@keyframes lb-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes lb-rise { from { opacity: 0; transform: translateY(12px) scale(0.98); } to { opacity: 1; transform: none; } }
@keyframes lb-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .lightbox-backdrop, .lightbox-dialog { animation: none; }
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact { background: var(--bg-dark); color: #fff; }
.contact .label { color: var(--gold-soft); }
.contact .section-title { color: #fff; }
.contact .section-sub { color: rgba(255,255,255,0.7); }
.contact-num { color: rgba(255,255,255,0.5); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
}
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-channels { border: 1px solid rgba(255,255,255,0.12); border-radius: 2px; margin-top: 2rem; }
.contact-row {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1rem;
  align-items: center; padding: 1.1rem 1.4rem;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  transition: background-color var(--t-fast) var(--ease-out), padding var(--t-fast) var(--ease-out);
}
.contact-row:last-child { border-bottom: none; }
.contact-row:hover { background: rgba(255,255,255,0.04); padding-left: 1.7rem; }
.contact-row-label {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--gold-soft);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.25rem;
}
.contact-row-value { font-size: 1rem; font-weight: 500; color: #fff; }
.contact-row-icon {
  display: grid; place-items: center; width: 40px; height: 40px;
  border-radius: 50%; background: rgba(255,255,255,0.06);
  color: var(--gold-soft); flex-shrink: 0;
  transition: background-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.contact-row:hover .contact-row-icon { background: var(--gold-soft); color: var(--bg-dark); }
.contact-row-arrow { color: var(--gold-soft); transition: transform 0.2s ease; }
.contact-row:hover .contact-row-arrow { transform: translateX(4px); }

/* ---- Contact form ---- */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 540px) { .form-row { grid-template-columns: 1fr; } }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field label {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--gold-soft);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.form-opt { color: rgba(255,255,255,0.4); text-transform: none; letter-spacing: 0; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%; font-family: inherit; font-size: 0.95rem; color: #fff;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 2px; padding: 0.7rem 0.85rem;
  transition: border-color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}
.form-field textarea { resize: vertical; min-height: 7rem; }
.form-field select { appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23e8be3f' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.85rem center; padding-right: 2.2rem;
}
.form-field select option { color: #111; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: rgba(255,255,255,0.35); }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none; border-color: var(--gold-soft); background: rgba(255,255,255,0.08);
}
.form-field input:user-invalid,
.form-field textarea:user-invalid { border-color: #e06666; }
.contact-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 0.25rem; }
.btn-submit {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.8rem 1.5rem; background: var(--gold); color: var(--bg-dark);
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; border: none; border-radius: 2px;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.btn-submit:hover { background: var(--gold-soft); transform: translateY(-1px); }
.btn-submit:active { transform: translateY(0); }
.btn-submit[disabled] { opacity: 0.6; cursor: progress; transform: none; }
.form-status { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin: 0; }
.form-status.is-ok { color: #6ee7a8; }
.form-status.is-err { color: #f6a5a5; }

/* =========================================================
   FOOTER
   ========================================================= */
footer { background: var(--bg-dark); color: rgba(255,255,255,0.65); padding: 2rem 0; font-size: 0.83rem; }
:root[data-theme="dark"] footer { background: var(--bg-dark); color: rgba(255,255,255,0.55); }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1.5rem; flex-wrap: wrap; font-family: var(--font-mono);
}
.footer-brand { color: var(--gold-soft); }

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }

/* Staggered children: when a container with .stagger reveals, its direct
   children fade in one after the other for a small wave effect. */
.stagger > * {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out);
}
.stagger.in > * { opacity: 1; transform: none; }
.stagger.in > *:nth-child(1) { transition-delay: 0.00s; }
.stagger.in > *:nth-child(2) { transition-delay: 0.07s; }
.stagger.in > *:nth-child(3) { transition-delay: 0.14s; }
.stagger.in > *:nth-child(4) { transition-delay: 0.21s; }
.stagger.in > *:nth-child(5) { transition-delay: 0.28s; }
.stagger.in > *:nth-child(6) { transition-delay: 0.35s; }

/* Active link in nav (set by JS based on scroll position) */
.nav-links a {
  position: relative;
}
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--forest);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease-out);
}
.nav-links a:not(.nav-cta):hover::after,
.nav-links a.is-active::after { transform: scaleX(1); }
.nav-links a.is-active { color: var(--forest); }

/* Scroll progress bar — thin gold line at the top of the viewport */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--gold);
  z-index: 100;
  transition: width 0.05s linear;
  pointer-events: none;
}

/* Back-to-top button — appears after scrolling */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--forest);
  color: #fff;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity var(--t-med) var(--ease-out),
              transform var(--t-med) var(--ease-out),
              background-color var(--t-fast) var(--ease-out);
  box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.35);
  z-index: 40;
}
.to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.to-top:hover { background: var(--forest-2); transform: translateY(-2px); }

/* Respect users who prefer less motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .stagger > * { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   PRINT STYLES
   ========================================================= */
@media print {
  *, *::before, *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  .nav, .hero-stats, .to-top, .scroll-progress, .skip-link, .theme-toggle,
  .nav-toggle, .hero-actions, .flyer-downloads, .reveal {
    display: none !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  body { font-size: 11pt; line-height: 1.4; }
  h1, h2, h3, h4 { page-break-after: avoid; }
  article, .principle, .step, .flyer { page-break-inside: avoid; }
  a[href^="http"]::after, a[href^="mailto:"]::after, a[href^="tel:"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
    color: #555 !important;
  }
  /* Hide anchor links from being printed */
  a[href^="#"]::after { content: ""; }
  .hero, section { padding: 1.5rem 0; border: none; }
  .service, .step, .principle, .flyer { border: 1px solid #ccc; }
}