/* =========================================================
  Utility Construction Website CSS
  - Clean, industrial look
  - Accessible, responsive, component-based
  ========================================================= */

/* -----------------------------
  Design Tokens
------------------------------ */
:root {
  --bg: #0b1220;              /* deep navy */
  --surface: #101a2e;
  --surface-2: #162342;
  --text: #e6edf7;
  --muted: #a8b3c7;

  --brand: #f59e0b;          /* safety orange */
  --brand-2: #22c55e;        /* safety green */
  --danger: #ef4444;
  --border: rgba(230, 237, 247, 0.12);

  --shadow: 0 12px 28px rgba(0,0,0,0.35);
  --radius: 14px;

  --maxw: 1120px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --h1: clamp(2rem, 4vw, 3rem);
  --h2: clamp(1.4rem, 2.5vw, 2rem);
  --h3: clamp(1.1rem, 2vw, 1.35rem);
  --body: 1rem;

  --space-1: 0.4rem;
  --space-2: 0.7rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.2rem;
  --space-6: 3rem;

  --focus: 0 0 0 3px rgba(245, 158, 11, 0.35);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7fafc;
    --surface: #ffffff;
    --surface-2: #f2f6fb;
    --text: #0b1220;
    --muted: #4b5563;
    --border: rgba(11, 18, 32, 0.12);
    --shadow: 0 12px 28px rgba(11, 18, 32, 0.12);
  }
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--body);
  line-height: 1.55;
  background: radial-gradient(1000px 500px at 15% 0%, rgba(245,158,11,0.14), transparent 55%),
              radial-gradient(900px 500px at 85% 10%, rgba(34,197,94,0.10), transparent 55%),
              var(--bg);
  color: var(--text);
}

img, svg, video { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }

p { margin: 0 0 var(--space-3); color: var(--muted); }
h1, h2, h3, h4 { margin: 0 0 var(--space-3); color: var(--text); line-height: 1.15; }
h1 { font-size: var(--h1); letter-spacing: -0.02em; }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }

small { color: var(--muted); }

:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 10px; }

::selection {
  background: rgba(245,158,11,0.35);
  color: var(--text);
}

/* -----------------------------
  Layout Helpers
------------------------------ */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding: var(--space-6) 0;
}

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent 60%),
              var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-4);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(245,158,11,0.10);
  color: var(--text);
  font-size: 0.9rem;
}

/* -----------------------------
  Buttons
------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.05rem;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 650;
  letter-spacing: 0.01em;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
  user-select: none;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, rgba(245,158,11,1), rgba(245,158,11,0.75));
  color: #111827;
  box-shadow: 0 10px 22px rgba(245,158,11,0.22);
}
.btn-primary:hover { box-shadow: 0 14px 26px rgba(245,158,11,0.30); }

.btn-secondary {
  background: rgba(255,255,255,0.06);
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover { background: rgba(255,255,255,0.10); }

.btn-outline {
  background: transparent;
  border-color: rgba(245,158,11,0.55);
  color: var(--text);
}
.btn-outline:hover { background: rgba(245,158,11,0.12); }

.btn-danger {
  background: rgba(239,68,68,0.12);
  border-color: rgba(239,68,68,0.35);
}
.btn-danger:hover { background: rgba(239,68,68,0.18); }

/* -----------------------------
  Header / Navigation
------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11,18,32,0.55);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(245,158,11,1), rgba(34,197,94,0.9));
  box-shadow: 0 14px 28px rgba(0,0,0,0.22);
}
.brand small { display: block; font-weight: 600; opacity: 0.85; }

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav a {
  color: var(--text);
  opacity: 0.9;
  font-weight: 650;
  padding: 0.5rem 0.6rem;
  border-radius: 10px;
}
.nav a:hover {
  background: rgba(255,255,255,0.06);
  text-decoration: none;
  opacity: 1;
}

.nav-cta { margin-left: 0.5rem; }

@media (max-width: 860px) {
  .nav { display: none; }
  .mobile-toggle { display: inline-flex; }
}

.mobile-toggle {
  display: none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  padding: 0.6rem 0.75rem;
  border-radius: 12px;
  color: var(--text);
}

/* -----------------------------
  Hero
------------------------------ */
.hero {
  position: relative;
  padding: calc(var(--space-6) + 1rem) 0;
}

.hero .panel {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: var(--space-5);
  align-items: center;
}

@media (max-width: 900px) {
  .hero .panel { grid-template-columns: 1fr; }
}

.hero h1 {
  margin-bottom: var(--space-3);
}

.hero .lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.hero-stats {
  display: grid;
  gap: var(--space-3);
}

.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent),
              var(--surface);
}
.stat strong {
  font-size: 1.3rem;
  color: var(--text);
}
.stat span {
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* -----------------------------
  Service Cards
------------------------------ */
.service-card {
  display: grid;
  gap: 0.9rem;
  padding: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(245,158,11,0.10), transparent 45%),
              var(--surface);
  box-shadow: var(--shadow);
}

.service-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.28);
  display: grid;
  place-items: center;
}

/* -----------------------------
  Project Gallery
------------------------------ */
.project-grid .project {
  overflow: hidden;
  padding: 0;
}

.project-media {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border-bottom: 1px solid var(--border);
}

.project-body {
  padding: var(--space-4);
}

.project-body .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

/* -----------------------------
  Callout / Safety Banner
------------------------------ */
.callout {
  border-radius: var(--radius);
  border: 1px solid rgba(245,158,11,0.35);
  background: linear-gradient(135deg, rgba(245,158,11,0.18), rgba(34,197,94,0.10));
  padding: var(--space-4);
  box-shadow: var(--shadow);
}

.callout h3 { margin-bottom: 0.5rem; }
.callout p { color: rgba(230,237,247,0.86); }

/* -----------------------------
  Forms
------------------------------ */
.form {
  display: grid;
  gap: var(--space-3);
}

.field {
  display: grid;
  gap: 0.45rem;
}

label {
  font-weight: 650;
  color: var(--text);
}

input,
select,
textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 0.85rem 0.9rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

input::placeholder,
textarea::placeholder { color: rgba(168,179,199,0.75); }

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(245,158,11,0.55);
  box-shadow: var(--focus);
  background: rgba(255,255,255,0.06);
}

textarea { min-height: 140px; resize: vertical; }

.help {
  font-size: 0.92rem;
  color: var(--muted);
}

/* -----------------------------
  Alerts
------------------------------ */
.alert {
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
}

.alert-success {
  border-color: rgba(34,197,94,0.30);
  background: rgba(34,197,94,0.10);
}

.alert-danger {
  border-color: rgba(239,68,68,0.30);
  background: rgba(239,68,68,0.10);
}

/* -----------------------------
  Footer
------------------------------ */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  padding: var(--space-5) 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr 0.6fr;
  gap: var(--space-4);
}

.footer-inner a { opacity: 0.9; }
.footer-inner a:hover { opacity: 1; }

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* -----------------------------
  Utilities
------------------------------ */
.hr {
  height: 1px;
  background: var(--border);
  margin: var(--space-5) 0;
}

.muted { color: var(--muted); }
.center { text-align: center; }
.right { text-align: right; }
.stack { display: grid; gap: var(--space-3); }

.hidden { display: none !important; }

/* -----------------------------
  Motion & Print
------------------------------ */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto; }
}

@media print {
  body {
    background: #ffffff !important;
    color: #000 !important;
  }
  .site-header, .hero-actions, .btn, .mobile-toggle { display: none !important; }
  .card, .service-card, .callout { box-shadow: none !important; }
}