/* ============================================================
   DroneDoku — Main Stylesheet
   Design: Dark navy + gold accent, Space Grotesk display
   Signature: Scanning beam in hero (drone sensor effect)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500&display=swap');

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

:root {
  --bg-base:        #060A14;
  --bg-surface:     #0C1525;
  --bg-card:        #111E30;
  --bg-card-hover:  #162840;
  --gold:           #F0A500;
  --gold-dim:       rgba(240, 165, 0, 0.12);
  --gold-glow:      rgba(240, 165, 0, 0.30);
  --blue:           #3B82F6;
  --blue-dim:       rgba(59, 130, 246, 0.10);
  --text:           #EDF2FF;
  --text-soft:      #94A3B8;
  --text-muted:     #4A5770;
  --border:         rgba(255,255,255,0.07);
  --border-gold:    rgba(240,165,0,0.25);
  --radius:         10px;
  --radius-lg:      16px;
  --shadow:         0 4px 24px rgba(0,0,0,0.4);
  --transition:     0.25s ease;
  --font-display:   'Space Grotesk', system-ui, sans-serif;
  --font-body:      'Inter', system-ui, sans-serif;
  --section-pad:    100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg-base);
  overflow-x: hidden;
}

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

/* ── Typography ───────────────────────────────────────────── */
.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
h1 {
  font-family: var(--font-display);
  font-size: clamp(46px, 6vw, 80px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 50px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
}
h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
p { color: var(--text-soft); }
.accent { color: var(--gold); }

/* ── Layout utils ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: var(--section-pad) 0; }

.section-header {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 64px;
}
.section-header p {
  margin-top: 16px;
  font-size: 17px;
  line-height: 1.65;
}

/* ── Navigation ───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), padding var(--transition), backdrop-filter var(--transition);
}
.nav.scrolled {
  background: rgba(6, 10, 20, 0.88);
  backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.nav__logo span { color: var(--gold); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--text); }
.nav__cta {
  background: var(--gold);
  color: #000 !important;
  font-weight: 600 !important;
  padding: 9px 20px;
  border-radius: 7px;
  transition: opacity var(--transition) !important;
}
.nav__cta:hover { opacity: 0.88 !important; }
.nav__burger { display: none; background: none; border: none; cursor: pointer; }
.burger-line {
  display: block; width: 24px; height: 2px;
  background: var(--text); margin: 5px 0;
  transition: var(--transition);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 100px;
}

/* Gradient background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 60% 50%, rgba(59, 130, 246, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(240, 165, 0, 0.05) 0%, transparent 60%),
    var(--bg-base);
  z-index: 0;
}

/* Technical grid overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 56px 56px;
  z-index: 1;
}

/* ── SIGNATURE ELEMENT: Drone scan effect ── */

/* Horizontal light sweep — like a sensor beam */
.hero__sweep {
  position: absolute;
  top: 0;
  left: -35%;
  width: 35%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(240, 165, 0, 0.025) 35%,
    rgba(240, 165, 0, 0.06)  50%,
    rgba(240, 165, 0, 0.025) 65%,
    transparent 100%
  );
  transform: skewX(-8deg);
  animation: sweep 8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  z-index: 2;
  pointer-events: none;
}

@keyframes sweep {
  0%   { left: -35%; opacity: 0; }
  5%   { opacity: 1; }
  92%  { opacity: 0.9; }
  100% { left: 120%; opacity: 0; }
}

/* Vertical scanline — moves top → bottom */
.hero__scanline {
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--gold) 30%,
    rgba(240,165,0,0.8) 50%,
    var(--gold) 70%,
    transparent 100%
  );
  animation: scanline 10s ease-in-out infinite;
  animation-delay: 2s;
  z-index: 2;
  pointer-events: none;
}

@keyframes scanline {
  0%   { top: -2px; opacity: 0; }
  8%   { opacity: 0.5; }
  88%  { opacity: 0.4; }
  100% { top: 100%; opacity: 0; }
}

/* Corner crosshairs — subtle technical detail */
.hero__corner {
  position: absolute;
  width: 18px;
  height: 18px;
  z-index: 3;
  opacity: 0.3;
  pointer-events: none;
}
.hero__corner::before,
.hero__corner::after {
  content: '';
  position: absolute;
  background: var(--gold);
}
.hero__corner--tl { top: 24px; left: 24px; }
.hero__corner--br { bottom: 24px; right: 24px; }
.hero__corner--tr { top: 24px; right: 24px; }
.hero__corner--bl { bottom: 24px; left: 24px; }

.hero__corner::before { width: 100%; height: 2px; top: 0; left: 0; }
.hero__corner::after  { width: 2px; height: 100%; top: 0; left: 0; }
.hero__corner--br::before { left: auto; right: 0; }
.hero__corner--br::after  { left: auto; right: 0; }
.hero__corner--tr::after  { left: auto; right: 0; }
.hero__corner--bl::before { left: 0; }

/* Hero content */
.hero__inner {
  position: relative;
  z-index: 5;
  max-width: 800px;
}
.hero__title {
  margin-bottom: 24px;
}
.hero__title .line2 {
  display: block;
  color: var(--gold);
  position: relative;
}
.hero__desc {
  font-size: 18px;
  line-height: 1.65;
  max-width: 580px;
  margin-bottom: 40px;
}
.hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__badge {
  position: absolute;
  right: 0;
  bottom: 60px;
  z-index: 5;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius);
  padding: 16px 22px;
  text-align: right;
}
.hero__badge-model {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
}
.hero__badge-specs {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn--primary {
  background: var(--gold);
  color: #000;
}
.btn--primary:hover {
  background: #ffc235;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--gold-glow);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ── About ────────────────────────────────────────────────── */
.about { background: var(--bg-surface); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about__text p {
  margin-bottom: 16px;
  font-size: 17px;
}
.about__text p:last-child { margin-bottom: 0; }

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: var(--border-gold); }
.stat-card__number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-card__label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ── Equipment ────────────────────────────────────────────── */
.equipment { }

.equip__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 72px;
  align-items: start;
}
.equip__tag {
  display: inline-block;
  background: var(--gold-dim);
  border: 1px solid var(--border-gold);
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.equip__name {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 12px;
}
.equip__subtitle {
  color: var(--text-soft);
  font-size: 17px;
  margin-bottom: 36px;
}
.equip__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.spec-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.spec-item__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.spec-item__val {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.equip__visual {
  position: relative;
}
.equip__mockup {
  width: 100%;
  aspect-ratio: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
/* DJI drone SVG placeholder */
.equip__mockup::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(240,165,0,0.08) 0%, transparent 65%);
}
.equip__drone-icon {
  font-size: 96px;
  position: relative;
  z-index: 1;
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* ── Services ─────────────────────────────────────────────── */
.services { background: var(--bg-surface); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.svc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.svc-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 100%;
  height: 2px;
  background: var(--gold);
  transition: right 0.35s ease;
}
.svc-card:hover { border-color: var(--border-gold); transform: translateY(-4px); }
.svc-card:hover::before { right: 0; }

.svc-card__icon {
  width: 48px;
  height: 48px;
  background: var(--gold-dim);
  border: 1px solid var(--border-gold);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
}
.svc-card__title {
  margin-bottom: 10px;
  font-size: 18px;
}
.svc-card__text {
  font-size: 14px;
  line-height: 1.65;
}

/* ── Process ──────────────────────────────────────────────── */
.process { }

.process__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}
.process__steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(100% / 6);
  right: calc(100% / 6);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}
.proc-step {
  text-align: center;
  position: relative;
}
.proc-step__num {
  width: 56px;
  height: 56px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  position: relative;
  z-index: 1;
}
.proc-step__title {
  margin-bottom: 12px;
  font-size: 19px;
}
.proc-step__text {
  font-size: 14px;
  line-height: 1.7;
}

/* ── Pricing ──────────────────────────────────────────────── */
.pricing { background: var(--bg-surface); }

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}
.price-card--featured {
  background: linear-gradient(160deg, #162840 0%, #0e1e32 100%);
  border-color: var(--gold);
  transform: scale(1.035);
}
.price-card:hover { transform: translateY(-4px); }
.price-card--featured:hover { transform: scale(1.035) translateY(-4px); }
.price-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: #000;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  white-space: nowrap;
}
.price-card__name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.price-card__price {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}
.price-card__price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0;
}
.price-card__unit {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.price-card__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.price-card__items {
  list-style: none;
  margin-bottom: 28px;
}
.price-card__items li {
  font-size: 14px;
  color: var(--text-soft);
  padding: 6px 0;
  padding-left: 22px;
  position: relative;
}
.price-card__items li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.pricing__note {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-muted);
}

/* ── Contact ──────────────────────────────────────────────── */
.contact { }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 72px;
  align-items: start;
}
.contact__info h2 { margin-bottom: 16px; }
.contact__info p  { font-size: 17px; margin-bottom: 32px; }

.contact__detail {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}
.contact__detail-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.contact__detail-icon {
  width: 40px;
  height: 40px;
  background: var(--gold-dim);
  border: 1px solid var(--border-gold);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact__detail-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 3px;
}
.contact__detail-value {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
}

/* Form */
.form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-dim);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394A3B8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-group select option { background: var(--bg-card); }
.form-group textarea { resize: vertical; min-height: 120px; }

.form__submit {
  width: 100%;
  padding: 15px;
  font-size: 16px;
}
.form__feedback {
  display: none;
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
}
.form__feedback--success {
  display: block;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
}
.form__feedback--error {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
}
.footer__logo span { color: var(--gold); }
.footer__copy {
  font-size: 13px;
  color: var(--text-muted);
}
.footer__links {
  display: flex;
  gap: 24px;
  list-style: none;
}
.footer__links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--gold); }

/* ── Scroll reveal ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s 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; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── Page (sub-pages) ─────────────────────────────────────── */
.page-hero {
  padding: 140px 0 80px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}
.page-content {
  padding: 64px 0;
  max-width: 800px;
}
.page-content h2 { margin: 36px 0 12px; }
.page-content h3 { margin: 24px 0 8px; }
.page-content p  { margin-bottom: 16px; }
.page-content ul { margin: 12px 0 20px 20px; color: var(--text-soft); line-height: 1.8; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .about__grid,
  .equip__grid,
  .contact__grid  { grid-template-columns: 1fr; gap: 48px; }
  .services__grid,
  .pricing__grid  { grid-template-columns: repeat(2, 1fr); }
  .process__steps { grid-template-columns: 1fr; gap: 32px; }
  .process__steps::before { display: none; }
  .equip__visual  { max-width: 360px; }
  .price-card--featured { transform: none; }
}

@media (max-width: 768px) {
  :root { --section-pad: 70px; }
  .nav__links { display: none; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(6, 10, 20, 0.97);
    justify-content: center;
    align-items: center;
    gap: 32px;
    font-size: 22px;
  }
  .nav__links.open .nav__cta { font-size: 18px; padding: 14px 32px; }
  .nav__burger { display: block; z-index: 999; }
  .hero__badge  { display: none; }
  .services__grid { grid-template-columns: 1fr; }
  .pricing__grid  { grid-template-columns: 1fr; }
  .form__row      { grid-template-columns: 1fr; }
  .footer__inner  { flex-direction: column; text-align: center; }
  .about__stats   { grid-template-columns: 1fr 1fr; }
  .equip__specs   { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__sweep, .hero__scanline { animation: none; }
  .equip__drone-icon { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}