:root {
  --bg-a: #e8f6ff;
  --bg-b: #f7ecff;
  --bg-c: #ecfff5;
  --surface: rgba(255, 255, 255, 0.64);
  --surface-strong: rgba(255, 255, 255, 0.82);
  --text: #152033;
  --muted: #526173;
  --accent: #1769e0;
  --accent-strong: #0f55bb;
  --accent-soft: rgba(23, 105, 224, 0.16);
  --border: rgba(255, 255, 255, 0.58);
  --shadow: 0 24px 70px rgba(35, 51, 84, 0.18);
  --radius-lg: 8px;
  --radius-md: 8px;
  --radius-sm: 8px;
  --max-width: 1140px;
  --transition: 220ms ease;
}

body.dark-theme {
  --bg-a: #101827;
  --bg-b: #18263a;
  --bg-c: #25324d;
  --surface: rgba(17, 26, 43, 0.66);
  --surface-strong: rgba(25, 38, 61, 0.86);
  --text: #f4f7fb;
  --muted: #bac6d8;
  --accent: #72d2ff;
  --accent-strong: #a3e2ff;
  --accent-soft: rgba(114, 210, 255, 0.18);
  --border: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 76px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.75), transparent 25%),
    radial-gradient(circle at 82% 8%, rgba(255, 255, 255, 0.54), transparent 26%),
    linear-gradient(135deg, var(--bg-a), var(--bg-b) 48%, var(--bg-c));
  transition: background var(--transition), color var(--transition);
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px clamp(16px, 4vw, 40px) 0;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: 0 12px 36px rgba(34, 47, 74, 0.12);
  backdrop-filter: blur(18px);
}

.nav-spacer {
  flex: 1 1 auto;
}

.nav-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.nav-button,
.primary-button,
.secondary-button {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 42px;
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.nav-button {
  padding: 10px 16px;
  color: var(--text);
  background: transparent;
}

.nav-button:hover,
.nav-button.active {
  transform: translateY(-2px);
  background: var(--accent-soft);
}

.section {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: clamp(64px, 9vw, 116px) 0;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.7fr);
  gap: 24px;
  align-items: stretch;
  min-height: calc(100vh - 82px);
}

.glass-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-content,
.status-card,
.contact-card,
.progress-panel,
.feature-card {
  border-radius: var(--radius-lg);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 6vw, 64px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 5.9rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 22px 0 10px;
  font-size: 1.18rem;
}

.hero-description,
.section-copy,
.feature-card p,
.typing-line {
  color: var(--muted);
  line-height: 1.7;
}

.hero-description {
  max-width: 680px;
  margin: 24px 0 0;
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.typing-line {
  min-height: 34px;
  margin: 24px 0 0;
  font-weight: 700;
}

.typing-caret {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 4px;
  background: var(--accent);
  vertical-align: -0.14em;
  animation: blink 800ms steps(2, start) infinite;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-button,
.secondary-button {
  padding: 12px 22px;
  font-weight: 800;
}

.primary-button {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 28px rgba(23, 105, 224, 0.28);
}

.secondary-button {
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface-strong);
}

.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(34, 47, 74, 0.18);
}

.status-card {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  align-self: center;
  padding: 28px;
}

.status-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.clock,
.date,
.counter {
  margin: 0;
  font-weight: 900;
}

.clock {
  font-size: clamp(2rem, 5vw, 3.25rem);
}

.date,
.counter {
  font-size: 1.08rem;
}

.background-strip {
  position: absolute;
  height: 72px;
  border: 1px solid var(--border);
  border-radius: 8px;
  opacity: 0.42;
  transform: rotate(-9deg);
  animation: drift 9s ease-in-out infinite;
}

.strip-one {
  top: 12%;
  right: 10%;
  width: 260px;
  background: rgba(23, 105, 224, 0.24);
}

.strip-two {
  bottom: 18%;
  left: 4%;
  width: 210px;
  background: rgba(0, 185, 140, 0.24);
  animation-delay: -2.5s;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-heading.compact {
  margin-bottom: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  background: var(--surface-strong);
}

.icon-box {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  color: white;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), #00a878);
  box-shadow: 0 12px 26px rgba(23, 105, 224, 0.24);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 28px;
  align-items: center;
}

.demo-stack {
  display: grid;
  gap: 18px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.gallery-tile {
  min-height: 180px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 40px rgba(34, 47, 74, 0.12);
  transition: transform var(--transition), filter var(--transition);
}

.gallery-tile:hover {
  transform: scale(1.03);
  filter: saturate(1.12);
}

.tile-one {
  background: linear-gradient(145deg, #1769e0, #70d6ff);
}

.tile-two {
  background: linear-gradient(145deg, #00a878, #d8f3dc);
}

.tile-three {
  background: linear-gradient(145deg, #ff8a5b, #ffd166);
}

.tile-four {
  background: linear-gradient(145deg, #7c3aed, #f0abfc);
}

.progress-panel {
  padding: 22px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  font-weight: 900;
}

.progress-track {
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(82, 97, 115, 0.18);
}

.progress-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #00a878);
  transition: width 900ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.progress-panel .secondary-button {
  margin-top: 18px;
}

.contact-section {
  padding-bottom: 120px;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  gap: 28px;
  padding: clamp(24px, 5vw, 42px);
}

.test-form {
  display: grid;
  gap: 12px;
}

.test-form label {
  font-weight: 800;
}

.test-form input,
.test-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  color: var(--text);
  background: var(--surface-strong);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.test-form textarea {
  resize: vertical;
}

.test-form input:hover,
.test-form textarea:hover {
  border-color: var(--accent);
}

.scroll-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 15;
  width: 54px;
  height: 54px;
  border-radius: 999px;
  color: white;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 16px 34px rgba(23, 105, 224, 0.3);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 30;
  max-width: min(92vw, 420px);
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 18px);
  transition: opacity var(--transition), transform var(--transition);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.ripple {
  position: absolute;
  z-index: -1;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  transform: translate(-50%, -50%) scale(0);
  animation: ripple 600ms ease-out;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(-9deg);
  }

  50% {
    transform: translate3d(18px, -18px, 0) rotate(-6deg);
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes ripple {
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(18);
  }
}

@media (max-width: 960px) {
  .hero,
  .split-section,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 12px 0;
  }

  .navbar {
    border-radius: 24px;
  }

  .nav-spacer {
    display: none;
  }

  .nav-actions {
    justify-content: center;
    width: 100%;
  }

  .nav-button {
    flex: 1 1 88px;
    padding-inline: 10px;
  }

  .section {
    width: min(100% - 24px, var(--max-width));
    padding: 54px 0;
  }

  .hero-actions {
    display: grid;
  }

  .feature-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-tile {
    min-height: 130px;
  }

  .toast {
    border-radius: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}