/* ==========================================================================
   Sightline Drone Solutions - base styles
   ========================================================================== */

:root {
  --bg: #1a1712;
  --bg-rgb: 26, 23, 18;
  --bg-alt: #221d16;
  --bg-alt-rgb: 34, 29, 22;
  --bg-card: #28221a;
  --bg-card-rgb: 40, 34, 26;
  --border: #3c3527;
  --text: #f3ead9;
  --text-dim: #b6a993;
  --accent: #4a7c4e;
  --accent-rgb: 74, 124, 78;
  --accent-dim: #355a38;
  --accent-text: #12160f;
  --danger: #cf5c40;
  --success: #7e9455;
  --radius: 8px;
  --max-width: 1140px;
  --font-body: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-head: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background:
    linear-gradient(180deg, rgba(var(--bg-rgb), 0.55) 0%, rgba(var(--bg-rgb), 0.42) 30%, rgba(var(--bg-rgb), 0.8) 100%),
    var(--bg) url('../img/hero-bg.svg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

body {
  margin: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 64px 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.15;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 16px; color: var(--text-dim); }

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: 12px;
}

.section-head {
  max-width: 1280px;
  margin-bottom: 40px;
}

.placeholder {
  background: rgba(var(--accent-rgb), 0.12);
  border: 1px dashed var(--accent-dim);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.92em;
  font-weight: 600;
  white-space: normal;
}

p.placeholder {
  display: block;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.btn-primary:hover {
  background: #5c945f;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 18px 32px;
  font-size: 1.15rem;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 23, 18, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand:hover {
  text-decoration: none;
}

.brand-icon {
  height: 40px;
  width: 40px;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text .brand-primary {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.01em;
  padding-bottom: 3px;
}

.brand-text .brand-secondary {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.footer-brand {
  margin-bottom: 12px;
}

.footer-brand .brand-icon {
  height: 46px;
  width: 46px;
}

.footer-brand .brand-primary {
  font-size: 1.2rem;
}

.footer-brand .brand-secondary {
  font-size: 0.72rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-call {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: var(--radius);
}

.header-call:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  padding: 120px 0 100px;
  background: linear-gradient(100deg, rgba(var(--bg-rgb), 0.55) 0%, rgba(var(--bg-rgb), 0.3) 55%, transparent 100%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  max-width: 640px;
}

.hero-grid h1 {
  font-size: clamp(2.1rem, 4vw, 2.75rem);
}

/* ---------- Page header (slim banner for non-home pages) ---------- */

.page-header {
  padding: 56px 0 48px;
  background: linear-gradient(100deg, rgba(var(--bg-rgb), 0.6) 0%, rgba(var(--bg-rgb), 0.35) 60%, transparent 100%);
  border-bottom: 1px solid var(--border);
}

.page-header .lead {
  max-width: 560px;
  margin-bottom: 0;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* ---------- Cards / grids ---------- */

.grid {
  display: grid;
  gap: 24px;
}

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

.card {
  display: block;
  background: rgba(var(--bg-card-rgb), 0.82);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.12s ease;
}

.card:hover {
  border-color: var(--accent);
  text-decoration: none;
  color: var(--text);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.card h3 {
  color: var(--text);
  margin-bottom: 8px;
}

.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-top: 8px;
}

/* ---------- Steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  position: relative;
  padding-top: 8px;
}

.step-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--accent);
  text-shadow: 0 2px 10px rgba(var(--bg-rgb), 0.9);
  margin-bottom: 4px;
}

/* ---------- Band / alt background ---------- */

.band {
  background: rgba(var(--bg-alt-rgb), 0.78);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ---------- Service area ---------- */

.area-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.area-list span {
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---------- Reviews placeholder ---------- */

.reviews-slot {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-dim);
}

/* ---------- Service detail blocks ---------- */

.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block .btn {
  margin-top: 20px;
}

.service-block .service-media {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(var(--bg-card-rgb), 0.82);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  text-align: center;
  padding: 24px;
  font-size: 0.9rem;
}

.fact-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.fact-list li {
  display: flex;
  gap: 10px;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.fact-list li::before {
  content: "\2713";
  color: var(--accent);
  font-weight: 900;
  flex-shrink: 0;
}

.caveat-box {
  background: rgba(var(--accent-rgb), 0.08);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 18px;
  margin-top: 16px;
}

.caveat-box p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.price-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  background: rgba(var(--bg-card-rgb), 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
  margin-bottom: 20px;
}

.price-tag .amount {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
}

.price-tag .unit {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.price-bonus {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin: -12px 0 20px;
}

/* ---------- Contact page ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.call-card {
  background: linear-gradient(160deg, rgba(var(--accent-rgb), 0.16), transparent 70%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  margin-bottom: 24px;
}

.call-card .phone-number {
  font-size: 2.1rem;
  font-weight: 900;
  display: block;
  margin: 10px 0 18px;
  color: var(--text);
}

.info-card {
  background: rgba(var(--bg-card-rgb), 0.82);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.info-card h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin: 0 0 10px;
}

.info-card h3:not(:first-child) {
  margin-top: 20px;
}

.info-card p {
  margin: 0;
  color: var(--text);
}

.email-card {
  background: rgba(var(--bg-card-rgb), 0.88);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.email-card .btn-block {
  margin-top: 8px;
}

.form-note {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 14px;
}

/* ---------- CTA band ---------- */

.cta-band {
  text-align: center;
  padding: 72px 0;
}

.cta-band h2 {
  margin-bottom: 12px;
}

.cta-band .btn-lg {
  margin-top: 16px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 28px;
  background: rgba(var(--bg-alt-rgb), 0.88);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-grid h4 {
  color: var(--text);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-grid a {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.footer-grid a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ---------- Sticky mobile call bar ---------- */

.mobile-call-bar {
  display: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .contact-grid,
  .service-block {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-media {
    order: -1;
  }

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

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    gap: 18px;
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .header-call span.call-label {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  body {
    padding-bottom: 74px;
  }

  .mobile-call-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 95;
    background: var(--accent);
  }

  .mobile-call-bar a {
    flex: 1;
    text-align: center;
    padding: 16px 0;
    color: var(--accent-text);
    font-weight: 800;
    font-size: 1rem;
  }
}