:root {
  --ink: #f7f8fb;
  --muted: #aeb5c4;
  --line: rgba(255, 255, 255, 0.1);
  --panel: rgba(20, 24, 35, 0.9);
  --accent: #3977f6;
  --max-viewport-height: 100dvh;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: #080a10;
}

body,
button,
input {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

button {
  -webkit-tap-highlight-color: transparent;
}

.welcome-shell {
  min-height: var(--max-viewport-height);
  display: grid;
  place-items: center;
  padding: max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  background:
    radial-gradient(circle at 15% 5%, rgba(57, 119, 246, 0.24), transparent 32rem),
    radial-gradient(circle at 90% 90%, rgba(111, 62, 216, 0.2), transparent 30rem),
    #080a10;
}

.welcome-card {
  width: min(780px, 100%);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: clamp(24px, 5vw, 52px);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.055), transparent 55%),
    var(--panel);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.38);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  width: 60px;
  height: 60px;
  flex: 0 0 60px;
  display: grid;
  place-items: center;
  border-radius: 19px;
  font-size: 24px;
  background: linear-gradient(145deg, #4c8cff, #275edb);
  box-shadow: 0 14px 36px rgba(57, 119, 246, 0.34);
}

.eyebrow {
  margin: 0 0 5px;
  color: #7fa8ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(27px, 6vw, 48px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 650px;
  margin: 30px 0 28px;
  color: #c4cad6;
  font-size: clamp(17px, 2.5vw, 21px);
  line-height: 1.55;
}

.video-form label {
  display: block;
  margin-bottom: 10px;
  color: #e7e9ef;
  font-size: 14px;
  font-weight: 650;
}

.input-row {
  display: flex;
  gap: 10px;
}

.input-row input {
  min-width: 0;
  flex: 1;
  height: 54px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 15px;
  padding: 0 17px;
  outline: none;
  color: var(--ink);
  background: rgba(5, 7, 12, 0.72);
}

.input-row input:focus {
  border-color: #5b8efa;
  box-shadow: 0 0 0 4px rgba(57, 119, 246, 0.16);
}

.input-row button,
.toolbar-button {
  border: 0;
  border-radius: 14px;
  color: white;
  cursor: pointer;
}

.input-row button {
  height: 54px;
  padding: 0 24px;
  font-weight: 750;
  background: var(--accent);
}

.form-note,
.form-error {
  min-height: 20px;
  margin: 10px 2px 0;
  font-size: 13px;
}

.form-note {
  color: #7f8798;
}

.form-error {
  color: #ff9a9a;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 34px;
}

.feature-grid article {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 17px;
  padding: 17px;
  background: rgba(255, 255, 255, 0.025);
}

.feature-grid strong {
  color: #8db3ff;
  font-size: 15px;
}

.feature-grid span {
  color: #939bac;
  font-size: 13px;
  line-height: 1.45;
}

.player-shell {
  height: var(--max-viewport-height);
  min-height: 480px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  background: #030407;
}

.player-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
    10px max(12px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--line);
  background: rgba(8, 10, 16, 0.96);
}

.toolbar-actions {
  display: flex;
  gap: 8px;
}

.toolbar-button {
  min-height: 40px;
  padding: 0 15px;
  color: #e9ecf3;
  font-size: 13px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
}

.toolbar-button--quiet {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
}

.toolbar-button--primary {
  background: var(--accent);
}

.player-stage {
  min-width: 0;
  min-height: 0;
  background: black;
}

.vk-frame {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  background: black;
}

.player-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px max(12px, env(safe-area-inset-right))
    max(8px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  color: #8c94a4;
  font-size: 12px;
  text-align: center;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #55d38a;
  box-shadow: 0 0 12px rgba(85, 211, 138, 0.7);
}

.player-shell.is-immersive {
  position: fixed;
  z-index: 9999;
  inset: 0;
  height: 100dvh;
  min-height: 0;
  grid-template-rows: minmax(0, 1fr);
}

.player-shell.is-immersive .player-toolbar,
.player-shell.is-immersive .player-hint {
  display: none;
}

@media (max-width: 640px) {
  .welcome-card {
    border-radius: 23px;
    padding: 23px 19px;
  }

  .brand-mark {
    width: 50px;
    height: 50px;
    flex-basis: 50px;
    border-radius: 16px;
  }

  .lead {
    margin: 23px 0;
  }

  .input-row {
    flex-direction: column;
  }

  .input-row button {
    width: 100%;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    margin-top: 24px;
  }

  .toolbar-button {
    padding-inline: 11px;
    font-size: 12px;
  }

  .toolbar-button--quiet {
    width: 46px;
    overflow: hidden;
    white-space: nowrap;
  }
}