/* ==========================================
   Drone ND – Landing Page
   Theme adapted from the ND-Filter Expert site
   (same design tokens: dark navy + pink/purple accent)
   ========================================== */

:root {
  --clr-accent:    #e91e63;
  --clr-accent-dk: #c2185b;
  --clr-purple:    #4527a0;
  --clr-purple-dk: #311b92;
  --clr-bg:        #080a22;
  --clr-bg-card:   rgba(255,255,255,0.05);
  --clr-text:      #f0f0f0;
  --clr-muted:     rgba(255,255,255,0.6);
  --radius:        16px;
  --nav-h:         64px;
  --transition:    0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.2; }

/* ---------- NAV ---------- */

.dn-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  background: transparent;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.dn-nav.scrolled {
  background: rgba(8,10,34,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.dn-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: #fff;
}

.dn-nav__brand img { width: 32px; border-radius: 8px; }

.dn-nav__links {
  display: none;
  gap: 32px;
  list-style: none;
}

@media (min-width: 768px) {
  .dn-nav__links { display: flex; }
}

.dn-nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--transition);
  letter-spacing: 0.03em;
}

.dn-nav__links a:hover,
.dn-nav__links a.active {
  color: var(--clr-accent);
}

.dn-nav__extra { display: flex; align-items: center; gap: 12px; }

.dn-nav__extra a {
  font-size: 0.85rem;
  color: var(--clr-muted);
  transition: color var(--transition);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  padding: 4px 12px;
  white-space: nowrap;
}

.dn-nav__extra a:hover { color: var(--clr-accent); border-color: var(--clr-accent); }

.dn-nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}

@media (min-width: 768px) { .dn-nav__hamburger { display: none; } }

.dn-nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

.dn-mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(8,10,34,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 24px 5%;
  z-index: 999;
  list-style: none;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.dn-mobile-menu.open { display: block; }
.dn-mobile-menu li + li { margin-top: 16px; }
.dn-mobile-menu a { font-size: 1rem; color: var(--clr-muted); }
.dn-mobile-menu a:hover { color: var(--clr-accent); }

/* ---------- LANGUAGE SWITCHER ---------- */

.dn-lang { position: relative; }

.dn-lang__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--clr-muted);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  padding: 4px 10px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.dn-lang__btn:hover,
.dn-lang.open .dn-lang__btn { color: var(--clr-accent); border-color: var(--clr-accent); }

.dn-lang__caret { flex-shrink: 0; transition: transform var(--transition); }
.dn-lang.open .dn-lang__caret { transform: rotate(180deg); }

.dn-lang__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 170px;
  margin: 0;
  background: rgba(8,10,34,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 6px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 1001;
}

.dn-lang.open .dn-lang__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dn-lang__menu li + li { margin-top: 0; }

.dn-lang__menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--clr-muted);
  transition: background var(--transition), color var(--transition);
}

.dn-lang__menu a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.dn-lang__menu a.active { color: var(--clr-accent); font-weight: 600; }

.dn-lang__menu-code { font-size: 0.7rem; color: rgba(255,255,255,0.4); text-transform: uppercase; }
.dn-lang__menu a.active .dn-lang__menu-code { color: var(--clr-accent); }

.dn-mobile-menu__langs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.dn-mobile-menu__langs a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-muted);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  padding: 6px 12px;
}

.dn-mobile-menu__langs a.active { color: var(--clr-accent); border-color: var(--clr-accent); }

/* ---------- HERO ---------- */

.dn-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 40px) 5% 80px;
  overflow: hidden;
}

.dn-hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../gfx/hero-bg.jpg');
  background-size: cover;
  background-position: center 30%;
  background-attachment: fixed;
  filter: brightness(0.5);
}

.dn-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(8,10,34,0.35) 0%,
    rgba(69,39,160,0.25) 45%,
    rgba(8,10,34,0.9) 100%
  );
}

.dn-hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.dn-hero__logo-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.dn-hero__logo-row img { width: 72px; border-radius: 18px; box-shadow: 0 8px 30px rgba(233,30,99,0.35); }

.dn-hero__title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #fff;
  text-shadow: 0 0 40px rgba(255,255,255,0.25);
  margin-bottom: 12px;
}

.dn-hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--clr-muted);
  margin-bottom: 16px;
}

.dn-hero__tagline {
  font-size: 0.85rem;
  color: var(--clr-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.dn-hero__phone {
  width: 60%;
  max-width: 300px;
  margin: 0 auto 48px;
  filter: drop-shadow(0 20px 60px rgba(233,30,99,0.3));
  animation: floatPhone 4s ease-in-out infinite;
  border-radius: 18px;
}

@keyframes floatPhone {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

.dn-hero__cta {
  display: inline-block;
  background: var(--clr-accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: 50px;
  letter-spacing: 0.04em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 8px 32px rgba(233,30,99,0.4);
}

.dn-hero__cta:hover {
  background: var(--clr-accent-dk);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(233,30,99,0.55);
  color: #fff !important;
}

.dn-badges { margin-top: 32px; display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.dn-badge--soon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--clr-muted);
  border: 1px dashed rgba(255,255,255,0.3);
  border-radius: 10px;
  padding: 10px 18px;
  cursor: default;
}

.dn-badge--soon strong { color: #fff; font-weight: 600; }

/* ---------- SECTIONS ---------- */

.dn-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 96px 5%;
}

.dn-section-title {
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.dn-section-subtitle {
  text-align: center;
  color: var(--clr-muted);
  max-width: 620px;
  margin: 0 auto 64px;
  font-size: 1rem;
}

.dn-intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.dn-intro-card {
  background: var(--clr-bg-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.dn-intro-card:hover {
  transform: translateY(-6px);
  border-color: var(--clr-accent);
  box-shadow: 0 12px 40px rgba(233,30,99,0.15);
}

.dn-intro-card__icon {
  margin-bottom: 20px;
  display: block;
}

.dn-intro-card__icon svg {
  width: 40px; height: 40px;
  fill: none; stroke: var(--clr-accent); stroke-width: 1.5;
  margin: 0 auto;
}

.dn-intro-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 10px; color: #fff; }
.dn-intro-card p  { font-size: 0.9rem; color: var(--clr-muted); }

/* ---------- FEATURE DETAILS ---------- */

.dn-feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
  padding: 64px 5%;
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .dn-feature { grid-template-columns: 1fr 1fr; }
  .dn-feature--reverse { direction: rtl; }
  .dn-feature--reverse > * { direction: ltr; }
}

.dn-feature__img { text-align: center; }
.dn-feature__img img {
  width: 60%; max-width: 260px; margin: 0 auto;
  filter: drop-shadow(0 12px 40px rgba(233,30,99,0.2));
  border-radius: 18px;
}

.dn-feature__text .dn-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 10px;
  font-weight: 600;
}

.dn-feature__text h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 700; margin-bottom: 16px; color: #fff; }
.dn-feature__text p  { color: var(--clr-muted); font-size: 0.95rem; }
.dn-feature__text ul { margin-top: 16px; padding-left: 1.1em; color: var(--clr-muted); font-size: 0.92rem; }
.dn-feature__text ul li { margin-bottom: 6px; }
.dn-feature__text ul li::marker { color: var(--clr-accent); }

.dn-divider { height: 1px; background: rgba(255,255,255,0.07); max-width: 1200px; margin: 0 auto; }

/* ---------- GUIDES ---------- */

.dn-guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.dn-guide-card {
  background: var(--clr-bg-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

.dn-guide-card:hover { transform: translateY(-4px); border-color: var(--clr-accent); }

.dn-guide-card__img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}

.dn-guide-card__body { padding: 28px 24px; }

.dn-guide-card__tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 10px;
  font-weight: 700;
}
.dn-guide-card h4 { font-size: 0.98rem; font-weight: 600; margin-bottom: 8px; color: #fff; }
.dn-guide-card p { font-size: 0.86rem; color: var(--clr-muted); }

.dn-guide-note {
  text-align: center;
  color: var(--clr-muted);
  font-size: 0.85rem;
  margin-top: 40px;
}

/* ---------- DRONE PROFILES STRIP ---------- */

.dn-drones-wrap { position: relative; }
.dn-drone-chip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}
.dn-drone-chip {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.82rem;
  color: var(--clr-muted);
  text-align: center;
  transition: border-color var(--transition), color var(--transition);
}
.dn-drone-chip:hover { border-color: var(--clr-accent); color: #fff; }
.dn-drone-chip strong { display: block; color: #fff; font-size: 0.86rem; margin-bottom: 2px; }
.dn-drone-more {
  text-align: center;
  color: var(--clr-muted);
  font-size: 0.85rem;
  margin-top: 32px;
}

/* ---------- COMPARE TABLE ---------- */

.dn-compare-wrap {
  background-image: url('../gfx/hero-bg.jpg');
  background-size: cover;
  background-position: center 20%;
  background-attachment: fixed;
  position: relative;
}

.dn-compare-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(8,10,34,0.88);
}

.dn-compare-wrap .dn-section { position: relative; }

.dn-compare-table { width: 100%; max-width: 720px; margin: 0 auto; border-collapse: collapse; }
.dn-compare-table thead th { padding: 16px 20px; text-align: center; font-size: 0.95rem; font-weight: 700; color: #fff; }
.dn-compare-table tbody tr { border-top: 1px solid rgba(255,255,255,0.08); transition: background var(--transition); }
.dn-compare-table tbody tr:hover { background: rgba(255,255,255,0.04); }
.dn-compare-table td { padding: 13px 20px; font-size: 0.88rem; color: var(--clr-muted); text-align: center; }
.dn-compare-table td:first-child { text-align: left; color: #fff; }

.icon-check { color: var(--clr-accent); font-size: 1.1rem; }
.icon-minus { color: rgba(255,255,255,0.25); font-size: 1.1rem; }

.dn-price-note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.95rem;
  color: var(--clr-muted);
}
.dn-price-note strong { color: #fff; }
.dn-price-note .dn-price-tag {
  display: inline-block;
  background: var(--clr-accent);
  color: #fff;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  margin: 0 4px;
}

/* ---------- FOOTER ---------- */

.dn-footer {
  background: rgba(0,0,0,0.6);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 40px 5%;
  display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center;
}

@media (min-width: 768px) { .dn-footer { flex-direction: row; justify-content: space-between; align-items: flex-start; } }

.dn-footer__copy { font-size: 0.85rem; color: var(--clr-muted); display: flex; align-items: center; gap: 8px; }
.dn-footer__copy img { width: 22px; border-radius: 5px; }

.dn-footer__links { display: flex; flex-direction: column; gap: 8px; font-size: 0.85rem; align-items: center; }
@media (min-width: 768px) { .dn-footer__links { align-items: flex-end; } }
.dn-footer__links-row { display: flex; gap: 20px; }
.dn-footer__links a { color: var(--clr-muted); transition: color var(--transition); }
.dn-footer__links a:hover { color: var(--clr-accent); }
.dn-footer__cross { color: rgba(255,255,255,0.45); font-size: 0.8rem; }
.dn-footer__cross a { color: var(--clr-muted); border-bottom: 1px dotted rgba(255,255,255,0.3); }
.dn-footer__cross a:hover { color: var(--clr-accent); border-color: var(--clr-accent); }

/* ---------- LEGAL PAGES ---------- */

.dn-legal {
  max-width: 760px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 56px) 5% 96px;
}
.dn-legal h1 { font-size: 1.8rem; margin-bottom: 8px; color: #fff; }
.dn-legal h2 { font-size: 1.1rem; margin: 32px 0 12px; color: #fff; }
.dn-legal p, .dn-legal li { color: var(--clr-muted); font-size: 0.92rem; margin-bottom: 12px; }
.dn-legal ul, .dn-legal ol { padding-left: 1.3em; margin-bottom: 16px; }
.dn-legal a { color: var(--clr-accent); }
.dn-legal .dn-back { display: inline-block; margin-bottom: 32px; color: var(--clr-accent); font-size: 0.9rem; }

/* ---------- 404 ---------- */
.dn-404 {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5%;
  gap: 16px;
}
.dn-404 h1 { font-size: clamp(2rem, 6vw, 3.5rem); color: #fff; }
.dn-404 p { color: var(--clr-muted); }