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

:root {
  --pk-blue: #1A68D4;
  --pk-blue-light: #EBF3FF;
  --pk-blue-dark: #1450A8;
  --pk-bg: #F8FAFF;
  --pk-text: #1A1A18;
  --pk-muted: #6B6B66;
  --pk-border: #D4DCF0;
  --pk-code-bg: #EBF3FF;
  --pk-code: #1450A8;
  --pk-green: #2E7D52;
  --pk-green-bg: #EBF5EF;
  --pk-red: #8B2222;
  --vb-red: #C8332A;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #E4EAF5;
  color: var(--pk-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.view {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  max-width: 520px;
  padding: 0;
}

.view.active { display: flex; }

/* ── Watch view overrides ── */
#view-watch {
  max-width: 960px;
  background: #0D0D0C;
  border-radius: 20px;
  overflow: hidden;
  align-items: stretch;
  text-align: left;
}

/* ── Logo ── */
.logo {
  font-size: 34px;
  font-weight: 700;
  color: var(--pk-blue);
  letter-spacing: -1px;
}

/* ── Landing ── */
.pk-header {
  text-align: center;
  padding: 48px 40px 0;
  width: 100%;
}

.tagline {
  font-size: 21px;
  color: var(--pk-muted);
  margin-top: 12px;
  line-height: 1.45;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 40px 48px;
  width: 100%;
}

.pk-footer-note {
  text-align: center;
  padding: 16px 40px 40px;
  font-size: 15px;
  color: #B0B8CC;
  border-top: 1px solid #E8EDF8;
  width: 100%;
}

/* ── Buttons ── */
.btn {
  width: 100%;
  padding: 22px 24px;
  font-size: 22px;
  font-weight: 600;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  display: block;
  text-align: center;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--pk-blue);
  color: #fff;
}
.btn-primary:hover { background: var(--pk-blue-dark); }

.btn-secondary {
  background: #fff;
  color: var(--pk-text);
  border: 2.5px solid var(--pk-border);
}
.btn-secondary:hover { border-color: var(--pk-blue); color: var(--pk-blue); }

.btn-danger {
  background: var(--vb-red);
  color: #fff;
}
.btn-danger:hover { background: #a82822; }

.btn-ghost {
  background: transparent;
  color: var(--pk-muted);
  font-weight: 500;
  font-size: 16px;
  padding: 12px;
}
.btn-ghost:hover { color: var(--pk-text); }

/* ── Share view ── */
.pk-hero-area {
  text-align: center;
  padding: 48px 40px 32px;
  width: 100%;
}

.instruction {
  font-size: 19px;
  color: var(--pk-muted);
  margin-top: 6px;
  margin-bottom: 28px;
  line-height: 1.45;
}

.pk-start-btn {
  display: inline-block;
  padding: 24px 60px;
  background: var(--pk-blue);
  color: #fff;
  border: none;
  border-radius: 20px;
  font-size: 26px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.pk-start-btn:hover { background: var(--pk-blue-dark); }

.pk-back-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 16px;
  color: var(--pk-muted);
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}
.pk-back-link:hover { color: var(--pk-text); }

/* Sharing active badge */
.sharing-active-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--pk-green-bg);
  color: var(--pk-green);
  border: 1.5px solid #8FD0A8;
  border-radius: 24px;
  padding: 7px 16px;
  font-size: 15px;
  font-weight: 600;
  margin-top: 12px;
}

.sharing-dot {
  width: 8px;
  height: 8px;
  background: var(--pk-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* Code card */
.code-card {
  background: var(--pk-code-bg);
  border-radius: 22px;
  padding: 36px 32px;
  margin: 24px 48px 0;
  text-align: center;
  border: 2px solid #B8D0F0;
  width: calc(100% - 96px);
}

.code-card-label {
  font-size: 16px;
  color: var(--pk-code);
  font-weight: 600;
  margin-bottom: 10px;
}

.code-display {
  font-size: 76px;
  font-weight: 700;
  letter-spacing: 14px;
  color: var(--pk-blue);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  padding-left: 14px;
}

.copy-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.pk-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  background: #fff;
  border: 2px solid #B8D0F0;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 600;
  color: var(--pk-blue);
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}
.pk-copy-btn:hover { background: #D8EAFF; }

.pk-code-hint {
  font-size: 15px;
  color: var(--pk-muted);
  padding: 16px 48px 32px;
  text-align: center;
  line-height: 1.5;
  width: 100%;
}

.pk-code-hint strong { color: var(--pk-text); }

.status {
  font-size: 16px;
  color: var(--pk-muted);
  padding: 8px 48px;
}

.copy-confirm {
  color: var(--pk-green);
  font-weight: 600;
  font-size: 15px;
}

/* ── Join view ── */
.pk-join-wrap {
  padding: 28px 48px 48px;
  width: 100%;
  text-align: left;
}

.pk-field-label {
  font-size: 18px;
  font-weight: 600;
  color: var(--pk-text);
  margin-bottom: 12px;
  display: block;
}

.code-input {
  display: block;
  width: 100%;
  padding: 24px 20px;
  border: 2.5px solid var(--pk-border);
  border-radius: 16px;
  font-size: 38px;
  font-weight: 600;
  letter-spacing: 10px;
  text-align: center;
  color: var(--pk-text);
  background: #fff;
  outline: none;
  transition: border-color 0.15s;
  font-family: inherit;
}
.code-input:focus { border-color: var(--pk-blue); }
.code-input::placeholder { color: #C0C8DC; letter-spacing: 8px; }

.pk-helper {
  font-size: 16px;
  color: var(--pk-muted);
  margin-top: 10px;
  line-height: 1.4;
}

.pk-join-btn {
  display: block;
  width: 100%;
  padding: 22px;
  background: var(--pk-blue);
  color: #fff;
  border: none;
  border-radius: 16px;
  font-size: 26px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 24px;
  transition: background 0.15s;
  font-family: inherit;
}
.pk-join-btn:hover { background: var(--pk-blue-dark); }
.pk-join-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Watch view ── */
.pk-video-area {
  flex: 1;
  background: #161614;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 320px;
}

.pk-status-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(to bottom, rgba(0,0,0,.6), transparent);
}

.pk-status-dot {
  width: 8px;
  height: 8px;
  background: #4CAF50;
  border-radius: 50%;
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.pk-status-text {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}

video#remote-video {
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  display: block;
  background: #000;
  object-fit: contain;
}

.pk-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 18px 24px;
  background: #111110;
  border-top: 1px solid #222;
}

.pk-divider {
  width: 1px;
  height: 36px;
  background: #2A2A28;
}

.pk-ctrl {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 20px;
  background: #242422;
  border: 1.5px solid #333;
  border-radius: 12px;
  cursor: pointer;
  color: #E0E0DC;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
  font-family: inherit;
}
.pk-ctrl:hover { background: #2E2E2C; }

.pk-leave {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 20px;
  background: var(--vb-red);
  border: 1.5px solid #e04438;
  border-radius: 12px;
  cursor: pointer;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s;
  font-family: inherit;
}
.pk-leave:hover { background: #a82822; }

.pk-ctrl-icon {
  font-size: 22px;
  line-height: 1;
  display: flex;
}

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .pk-header       { padding: 28px 24px 0; }
  .logo            { font-size: 26px; }
  .tagline         { font-size: 16px; margin-top: 8px; }
  .button-group    { padding: 24px 20px; gap: 12px; }
  .btn             { padding: 18px 20px; font-size: 19px; border-radius: 14px; }
  .pk-footer-note  { padding: 14px 20px 20px; font-size: 13px; }

  .pk-hero-area    { padding: 20px 20px 20px; }
  .instruction     { font-size: 15px; margin-bottom: 16px; }
  .pk-start-btn    { padding: 20px 40px; font-size: 20px; border-radius: 16px; }

  .code-card       { margin: 16px 16px 0; width: calc(100% - 32px); padding: 24px 20px; border-radius: 16px; }
  .code-display    { font-size: 54px; letter-spacing: 8px; padding-left: 8px; }
  .code-card-label { font-size: 14px; }
  .copy-buttons    { flex-direction: column; }
  .pk-copy-btn     { font-size: 15px; padding: 12px 16px; }
  .pk-code-hint    { padding: 12px 20px 20px; font-size: 13px; }
  .status          { padding: 6px 20px; }

  .pk-join-wrap    { padding: 20px 20px 32px; }
  .pk-field-label  { font-size: 16px; }
  .code-input      { font-size: 30px; letter-spacing: 6px; padding: 18px 16px; border-radius: 14px; }
  .pk-helper       { font-size: 14px; }
  .pk-join-btn     { font-size: 21px; padding: 18px; border-radius: 14px; margin-top: 16px; }

  .pk-bar          { gap: 12px; padding: 14px 16px; }
  .pk-ctrl,
  .pk-leave        { padding: 10px 14px; font-size: 12px; border-radius: 10px; }
}