/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #04061a;
  --color-surface: #0d1030;
  --color-primary: #7c3aed;
  --color-accent: #ec4899;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.08);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 16px;
  --container: 1120px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(4, 6, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-text);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: #6d28d9;
  transform: translateY(-1px);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 80px 0 60px;
  overflow: visible;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.4);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #c084fc;
  margin-bottom: 18px;
}

.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-free {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.store-btn {
  display: inline-block;
  transition: opacity 0.2s, transform 0.2s;
}

.store-btn:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.store-btn img {
  display: block;
}

/* ===== FEATURES ===== */
.features {
  padding: 100px 0;
  background: var(--color-surface);
}

.features h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-sub {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 56px;
}

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

/* ===== FEATURES ORBITAL LAYOUT ===== */
/* Wrapper: 1060×1280px  |  center: (530,640)  |  orbit-radius: 470px */
/* Card size: 215px wide  |  card offset from orbit pt: (-107, -85)    */
.features-orbital-wrapper {
  position: relative;
  width: 1060px;
  height: 1280px;
  margin: 0 auto;
}

.orbital-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 940px;
  height: 940px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px dashed rgba(124, 58, 237, 0.28);
  pointer-events: none;
}

.orbital-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 5;
}

.orbital-glow {
  position: absolute;
  inset: -32px -24px;
  border-radius: 50%;
  background: radial-gradient(
    ellipse 60% 50% at 50% 55%,
    rgba(124, 58, 237, 0.46) 0%,
    rgba(236, 72, 153, 0.22) 50%,
    transparent 70%
  );
  animation: pulseGlow 3s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

.orbital-phone {
  width: 260px;
  height: auto;
  display: block;
  transform: rotate(3deg);
  filter: drop-shadow(0 32px 64px rgba(124, 58, 237, 0.62))
    drop-shadow(0 10px 28px rgba(236, 72, 153, 0.38));
  transition: transform 0.4s ease;
}

.orbital-phone:hover {
  transform: rotate(1deg) translateY(-14px);
}

/* orbit-card positions — center(520,570), radius 440                   */
/* angle  orbit-pt            card top-left  (offset -107, -85)         */
.orbit-card {
  position: absolute;
  width: 215px;
}

/* -90°  → orbit(520, 130)  */
.orbit-card--1 {
  top: 45px;
  left: 413px;
}
/* -30°  → orbit(901, 350)  */
.orbit-card--2 {
  top: 265px;
  left: 794px;
}
/* +30°  → orbit(901, 790)  */
.orbit-card--3 {
  top: 705px;
  left: 794px;
}
/* +90°  → orbit(520, 1010) */
.orbit-card--4 {
  top: 925px;
  left: 413px;
}
/* +150° → orbit(139, 790)  */
.orbit-card--5 {
  top: 705px;
  left: 32px;
}
/* +210° → orbit(139, 350)  */
.orbit-card--6 {
  top: 265px;
  left: 32px;
}

/* Highlight card in orbital — override grid-column span */
.orbit-card.feature-card--highlight {
  grid-column: unset;
}

/* Compact styles for orbital cards — tighter layout in circular arrangement */
.features-orbital-wrapper .feature-card {
  padding: 22px 18px;
}
.features-orbital-wrapper .feature-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}
.features-orbital-wrapper .feature-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.features-orbital-wrapper .feature-card p {
  font-size: 0.85rem;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.2s, border-color 0.2s, background 0.25s;
}

.feature-card:hover {
  transform: translateY(-4px);
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.18) 0%,
    rgba(236, 72, 153, 0.12) 100%
  );
  border-color: rgba(124, 58, 237, 0.5);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== DOWNLOAD CTA ===== */
.download {
  padding: 100px 0;
  text-align: center;
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.15) 0%,
    rgba(236, 72, 153, 0.1) 100%
  );
}

.download-inner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.download-inner p {
  color: var(--color-text-muted);
  margin-bottom: 36px;
}

.store-badges {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ===== LANG SWITCHER ===== */
.lang-switcher {
  position: relative;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
  line-height: 1;
}

.lang-current:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

.lang-current svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.lang-chevron {
  transition: transform 0.2s;
}

.lang-current[aria-expanded="true"] .lang-chevron {
  transform: rotate(180deg);
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: #14122a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 6px;
  list-style: none;
  z-index: 200;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5),
    0 4px 12px rgba(124, 58, 237, 0.15);
  overflow: hidden;
}

.lang-dropdown.open {
  display: block;
  animation: dropIn 0.15s ease;
}

@keyframes dropIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 7px;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  transition: background 0.12s, color 0.12s;
}

.lang-option:hover,
.lang-option:focus {
  background: rgba(124, 58, 237, 0.15);
  color: var(--color-text);
  outline: none;
}

.lang-option.active {
  color: #c084fc;
  font-weight: 600;
}

.lang-flag {
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
}

/* ===== HERO VISUAL (K splash) ===== */
.hero-mockup {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: visible;
  min-height: 520px;
}

.hero-splash-k {
  position: absolute;
  top: 50%;
  left: 30%;
  width: min(1800px, 130vw);
  height: min(1800px, 130vw);
  mix-blend-mode: screen;
  opacity: 0.94;
  pointer-events: none;
  z-index: 0;
  user-select: none;
  animation: kBreathe 7s ease-in-out infinite;
  transition: filter 0.5s ease, opacity 0.5s ease;
  -webkit-mask-image: radial-gradient(
    ellipse 58% 64% at 50% 52%,
    black 32%,
    transparent 72%
  );
  mask-image: radial-gradient(
    ellipse 58% 64% at 50% 52%,
    black 32%,
    transparent 72%
  );
}

.hero-mockup:hover .hero-splash-k {
  animation: kBreatheHover 2.8s ease-in-out infinite;
  filter: brightness(1.22) saturate(1.45);
  opacity: 1;
}

@keyframes kBreathe {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
  33% {
    transform: translate(-50%, -50%) scale(1.04) rotate(1.2deg);
  }
  66% {
    transform: translate(-50%, -50%) scale(0.97) rotate(-0.7deg);
  }
}

@keyframes kBreatheHover {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1.1) rotate(-2deg);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.18) rotate(2.5deg);
  }
}

.hero-visual {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.hero-glow-ring {
  position: absolute;
  inset: -60px -40px;
  border-radius: 50%;
  background: radial-gradient(
    ellipse 70% 50% at 50% 55%,
    rgba(124, 58, 237, 0.38) 0%,
    rgba(236, 72, 153, 0.18) 50%,
    transparent 70%
  );
  animation: pulseGlow 3s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

.hero-phone {
  position: relative;
  z-index: 2;
  width: clamp(190px, 22vw, 250px);
  height: auto;
  display: block;
  transform: rotate(5deg);
  filter: drop-shadow(0 36px 72px rgba(124, 58, 237, 0.48))
    drop-shadow(0 8px 24px rgba(236, 72, 153, 0.3));
  transition: transform 0.4s ease, filter 0.4s ease;
}

.hero-phone:hover {
  transform: rotate(2deg) translateY(-12px);
  filter: drop-shadow(0 48px 90px rgba(124, 58, 237, 0.58))
    drop-shadow(0 14px 36px rgba(236, 72, 153, 0.4));
}

/* ===== K-COMMUNITY HIGHLIGHT CARD ===== */
.feature-card--highlight {
  grid-column: span 2;
}

.community-langs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.community-langs span {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.8rem;
  color: var(--color-text);
  white-space: nowrap;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  /* Orbital → 2-col grid on tablet/mobile */
  .features-orbital-wrapper {
    width: auto;
    height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 0;
  }
  .orbital-ring {
    display: none;
  }
  .orbital-center {
    position: static;
    transform: none;
    grid-column: span 2;
    display: flex;
    justify-content: center;
    padding: 24px 0;
  }
  .orbit-card,
  .orbit-card--1,
  .orbit-card--2,
  .orbit-card--3,
  .orbit-card--4,
  .orbit-card--5,
  .orbit-card--6 {
    position: static;
    width: auto;
    top: auto;
    left: auto;
  }
  .orbit-card.feature-card--highlight {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-sub {
    max-width: 100%;
  }
  .hero-cta {
    justify-content: center;
  }
  .hero-mockup {
    min-height: 300px;
    border-radius: 16px;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .features-orbital-wrapper {
    grid-template-columns: 1fr;
  }
  .orbit-card.feature-card--highlight {
    grid-column: span 1;
  }
  .nav-links a:not(.btn):not(.lang-switcher) {
    display: none;
  }
  .lang-dropdown {
    right: auto;
    left: 0;
  }
}