/* ============================================================
   Upstate Drone Services — styles
   ============================================================ */

:root {
  --navy: #0F1720;
  --charcoal: #1B2430;
  --orange: #F97316;
  --orange-d: #ea6a0c;
  --lime: #B7FF3C;
  --white: #F8FAFC;
  --gray: #94A3B8;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.28);

  --maxw: 1240px;
  --pad: 40px;

  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; }

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

/* ---------- Shared bits ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  padding: 15px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn--accent { background: var(--orange); color: #160a02; }
.btn--accent:hover { background: var(--orange-d); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--white); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--orange); color: var(--orange); transform: translateY(-2px); }
.btn--sm { padding: 11px 20px; font-size: 0.82rem; }
.btn--lg { padding: 18px 38px; font-size: 1rem; }

/* grid overlay */
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 1;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 100%);
}
.grid-overlay--soft { opacity: .5; }

/* ============================================================
   NAVBAR
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(15, 23, 32, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo__mark { color: var(--white); flex-shrink: 0; }
.logo__text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  line-height: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.logo__sub { font-size: 0.6rem; font-weight: 500; letter-spacing: 0.3em; color: var(--gray); }

.nav__links { display: flex; gap: 38px; }
.nav__links a {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray);
  position: relative;
  transition: color .2s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -7px;
  width: 0; height: 2px; background: var(--orange); transition: width .25s var(--ease);
}
.nav__links a:hover { color: var(--white); }
.nav__links a:hover::after { width: 100%; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--white); transition: .3s var(--ease); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__media {
  position: absolute; inset: 0; z-index: 0;
  background-image: url('https://images.unsplash.com/photo-1517089152318-42ec560349c0?auto=format&fit=crop&w=2000&q=80');
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  animation: heroZoom 22s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero__overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(15,23,32,.72) 0%, rgba(15,23,32,.55) 35%, rgba(15,23,32,.92) 100%),
    linear-gradient(90deg, rgba(15,23,32,.85) 0%, rgba(15,23,32,.25) 60%, rgba(15,23,32,.1) 100%);
}
.hero .grid-overlay { z-index: 2; opacity: .6; }

.coord {
  position: absolute;
  z-index: 3;
  font-family: var(--font-head);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--gray);
  opacity: .8;
}
.coord--tl { top: 100px; left: var(--pad); }
.coord--tr { top: 100px; right: var(--pad); }
.coord--bl { bottom: 36px; left: var(--pad); color: var(--lime); opacity: .85; }
.coord--br { bottom: 36px; right: var(--pad); }

.hero__content { position: relative; z-index: 4; max-width: 880px; padding-top: 60px; }
.hero__title { font-size: clamp(2.6rem, 6vw, 5rem); font-weight: 700; }
.hero__title-sub { display: block; color: var(--gray); font-weight: 500; font-size: clamp(1.3rem, 3vw, 2.4rem); margin-top: 14px; }
.hero__lead { color: var(--gray); font-size: 1.12rem; max-width: 620px; margin: 30px 0 40px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  z-index: 4; display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: var(--font-head); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gray);
}
.hero__scroll-line { width: 1px; height: 46px; background: linear-gradient(var(--orange), transparent); }

/* ============================================================
   TRUST STRIP
   ============================================================ */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--charcoal); }
.strip__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; padding-top: 24px; padding-bottom: 24px; }
.strip__item {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-head); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray);
}
.dot { width: 7px; height: 7px; background: var(--orange); flex-shrink: 0; }

/* ============================================================
   SECTIONS
   ============================================================ */
.section { padding: 120px 0; position: relative; }
.section--alt { background: var(--charcoal); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section__head { max-width: 680px; margin-bottom: 64px; }
.section__index {
  display: block; font-family: var(--font-head); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.28em; color: var(--orange); margin-bottom: 18px;
}
.section__title { font-size: clamp(1.9rem, 4vw, 3rem); }
.section__intro { color: var(--gray); font-size: 1.08rem; margin-top: 20px; }

/* ---------- Service cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card {
  background: var(--navy);
  padding: 40px 34px;
  position: relative;
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.section--alt .card { background: var(--charcoal); }
.card::before {
  content: ""; position: absolute; left: 0; top: 0; width: 0; height: 2px;
  background: var(--orange); transition: width .35s var(--ease);
}
.card:hover { background: #131d28; transform: translateY(-4px); }
.card:hover::before { width: 100%; }
.card__icon { color: var(--orange); margin-bottom: 26px; }
.card__title { font-size: 1.22rem; margin-bottom: 14px; }
.card__text { color: var(--gray); font-size: 0.96rem; margin-bottom: 24px; }
.card__tag {
  font-family: var(--font-head); font-size: 0.66rem; font-weight: 500;
  letter-spacing: 0.18em; color: var(--gray); opacity: .7;
}

/* ---------- Portfolio ---------- */
.portfolio { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 240px; gap: 16px; }
.shot {
  position: relative; overflow: hidden; grid-column: span 2;
  background-image: var(--img); background-size: cover; background-position: center;
  border: 1px solid var(--line);
}
.shot--lg { grid-column: span 2; grid-row: span 2; }
.shot--wide { grid-column: span 4; }
.shot::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,23,32,.1) 0%, rgba(15,23,32,.85) 100%);
  transition: background .35s var(--ease);
}
.shot::before {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  border: 1px solid transparent; transition: border-color .35s var(--ease);
}
.shot:hover::after { background: linear-gradient(180deg, rgba(249,115,22,.12) 0%, rgba(15,23,32,.88) 100%); }
.shot:hover::before { border-color: rgba(249,115,22,.5); }
.shot img { width: 100%; height: 100%; object-fit: cover; }
.shot__meta { position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column; justify-content: flex-end; padding: 22px; }
.shot__tag {
  align-self: flex-start;
  font-family: var(--font-head); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.16em;
  color: var(--white); background: rgba(15,23,32,.7); border: 1px solid var(--line-strong);
  padding: 6px 11px; margin-bottom: 12px;
}
.shot__data { display: flex; flex-wrap: wrap; gap: 16px; font-family: var(--font-head); font-size: 0.66rem; letter-spacing: 0.12em; color: var(--gray); }
.shot__data span { position: relative; }

/* ---------- Why ---------- */
.why { display: grid; grid-template-columns: 1.2fr 1fr; gap: 70px; align-items: center; }
.why__list { list-style: none; margin-top: 34px; display: grid; gap: 16px; }
.why__list li { display: flex; align-items: flex-start; gap: 14px; color: var(--white); font-size: 1rem; }
.lime-dot { width: 8px; height: 8px; background: var(--lime); margin-top: 8px; flex-shrink: 0; box-shadow: 0 0 10px rgba(183,255,60,.6); }
.why__badges { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.badge { background: var(--navy); padding: 34px 28px; transition: background .3s var(--ease); }
.badge:hover { background: #131d28; }
.badge__k { display: block; font-family: var(--font-head); font-size: 1.6rem; font-weight: 700; color: var(--orange); letter-spacing: 0; margin-bottom: 8px; }
.badge__v { color: var(--gray); font-size: 0.9rem; }

/* ---------- Process ---------- */
.process { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; position: relative; }
.step { padding: 0 36px; position: relative; }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 24px; right: 0; width: 1px; height: calc(100% - 24px);
  background: var(--line);
}
.step__num { font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.2em; color: var(--orange); }
.step__icon { color: var(--white); margin: 26px 0 24px; }
.step__title { font-size: 1.4rem; margin-bottom: 12px; }
.step__text { color: var(--gray); font-size: 0.98rem; }

/* ============================================================
   CTA
   ============================================================ */
.cta {
  position: relative; overflow: hidden;
  padding: 130px 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(249,115,22,.10), transparent 60%),
    var(--charcoal);
  border-top: 1px solid var(--line);
  text-align: center;
}
.cta__inner { position: relative; z-index: 2; max-width: 720px; }
.cta__title { font-size: clamp(2.1rem, 5vw, 3.6rem); }
.cta__lead { color: var(--gray); font-size: 1.1rem; margin: 22px auto 40px; max-width: 540px; }
.cta__contact { margin-top: 30px; font-family: var(--font-head); font-size: 0.9rem; letter-spacing: 0.06em; color: var(--gray); display: flex; gap: 16px; justify-content: center; align-items: center; }
.cta__contact a:hover { color: var(--orange); }
.cta__contact .sep { color: var(--line-strong); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy); border-top: 1px solid var(--line); padding-top: 70px; }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 56px; }
.footer__tag { color: var(--gray); font-size: 0.92rem; margin-top: 18px; max-width: 280px; }
.footer__col h4 { font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--white); margin-bottom: 18px; }
.footer__col a, .footer__col span { display: block; color: var(--gray); font-size: 0.92rem; margin-bottom: 10px; transition: color .2s; }
.footer__col a:hover { color: var(--orange); }
.footer__base {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 26px; padding-bottom: 30px; border-top: 1px solid var(--line);
  font-family: var(--font-head); font-size: 0.74rem; letter-spacing: 0.08em; color: var(--gray);
}
.footer__cert { color: var(--lime); opacity: .7; }

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --pad: 28px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .why { grid-template-columns: 1fr; gap: 44px; }
  .process { grid-template-columns: 1fr; gap: 40px; }
  .step { padding: 0; padding-bottom: 40px; }
  .step:not(:last-child)::after { top: auto; right: auto; bottom: 0; left: 0; width: 100%; height: 1px; }
}

@media (max-width: 760px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 76px; left: 0; right: 0;
    background: rgba(15,23,32,.97); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line); padding: 10px 0;
  }
  .nav.is-open .nav__links a { padding: 16px var(--pad); }
  .nav.is-open .nav__links a::after { display: none; }
  .section { padding: 80px 0; }
  .cards { grid-template-columns: 1fr; }
  .portfolio { grid-template-columns: 1fr; grid-auto-rows: 220px; }
  .shot, .shot--lg, .shot--wide { grid-column: span 1; grid-row: span 1; }
  .why__badges { grid-template-columns: 1fr; }
  .coord, .hero__scroll { display: none; }
  .hero__lead { font-size: 1rem; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__base { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 460px) {
  .footer__inner { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
}