/**
 * TeleDNS — base reset, type, atmosphere, controls
 */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}

body {
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.47;
  letter-spacing: -0.01em;
  color: var(--label-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--brand) 55%, transparent);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Atmospheric background */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 55% at 15% -10%, var(--bg-glow-1), transparent 55%),
    radial-gradient(ellipse 60% 45% at 90% 10%, var(--bg-glow-2), transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 100%, var(--bg-glow-3), transparent 60%),
    var(--bg-primary);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--bg-dot) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.9;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 85%);
}

/* Type scale */
.brand-mark {
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  line-height: 0.95;
}

.headline {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  line-height: 1.15;
}

.subhead {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--label-secondary);
  letter-spacing: -0.01em;
  max-width: 36ch;
}

.section-title {
  font-weight: 700;
  letter-spacing: -0.025em;
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  line-height: 1.2;
}

.section-lead {
  margin-top: var(--space-3);
  color: var(--label-secondary);
  font-size: 1.05rem;
  max-width: 42ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--brand-soft);
  margin-bottom: var(--space-3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  letter-spacing: -0.02em;
  transition:
    transform var(--duration-fast) var(--ease),
    opacity var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease),
    box-shadow var(--duration-fast) var(--ease),
    border-color var(--duration-fast) var(--ease),
    color var(--duration-fast) var(--ease);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 16px var(--brand-glow);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--brand) 88%, #fff);
}

.btn-ghost {
  background: var(--fill-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--label-primary);
  backdrop-filter: blur(var(--glass-blur-sm)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur-sm)) saturate(var(--glass-saturate));
}

.btn-ghost:hover {
  background: var(--fill-secondary);
  border-color: var(--brand);
  color: var(--brand-soft);
}

.btn-lg {
  min-height: 52px;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* Forms */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--label-secondary);
}

.field input,
.field textarea,
.field select {
  min-height: 48px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background: var(--fill-quaternary);
  color: var(--label-primary);
  transition: border-color var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease);
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand) 55%, var(--glass-border));
  background: var(--fill-tertiary);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--label-tertiary);
}

/* Motion */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes soft-glow {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(1);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.04);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
}

.reveal.is-visible {
  animation: rise-in var(--duration-slow) var(--ease-decel) forwards;
}

.reveal-delay-1 { animation-delay: 80ms; }
.reveal-delay-2 { animation-delay: 160ms; }
.reveal-delay-3 { animation-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .btn:active,
  .glass-interactive:hover,
  .glass-interactive:active {
    transform: none;
  }
}

/* Site liveliness */
.site-header .nav-chrome {
  animation: rise-in 0.45s var(--ease-decel) both;
}

.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: none;
}

.btn-primary:hover::after {
  animation: sheen 0.7s var(--ease) forwards;
}

@keyframes sheen {
  to { transform: translateX(120%); }
}

.feature-item,
.plan,
.compare-card {
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.feature-item:hover,
.compare-card:hover {
  transform: translateY(-4px);
}