/* Page-level grids and responsive structure */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-shell {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.brand-block {
  text-align: center;
  margin-bottom: 28px;
}

.brand-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: 10px;
  filter: drop-shadow(0 0 18px rgba(0,204,255,0.35));
}

.brand-name {
  font-family: var(--font-brand);
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--ink-100);
}
.brand-name span { color: var(--cyan); }

.brand-tagline {
  font-family: var(--font-crimson);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--ink-60);
  margin-top: 4px;
}

.auth-panel {
  width: 100%;
  padding: 32px 28px;
}

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-40);
  text-align: center;
}

/* App shell (dashboard/settings) */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--glass-border);
  background: var(--glass-bg-2);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.app-header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.app-header .brand img { width: 32px; height: 32px; }
.app-header .brand-text {
  font-family: var(--font-brand);
  letter-spacing: 0.06em;
  font-size: 1rem;
}
.app-header .brand-text span { color: var(--cyan); }

.app-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.app-nav a {
  color: var(--ink-80);
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
}
.app-nav a.active,
.app-nav a:hover {
  color: var(--white);
  border-bottom-color: var(--cyan);
  text-decoration: none;
}

.app-main {
  flex: 1;
  padding: 24px 28px 60px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.scene-wrap {
  position: relative;
  width: 100%;
  height: 46vh;
  min-height: 340px;
  max-height: 560px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-deep);
  margin-bottom: 28px;
  background: radial-gradient(ellipse at 50% 30%, rgba(0,204,255,0.06), transparent 60%), var(--glass-bg);
}

#scene-canvas-host {
  position: absolute;
  inset: 0;
}

.scene-hint {
  position: absolute;
  bottom: 12px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-40);
  pointer-events: none;
}

.section-title {
  font-family: var(--font-brand);
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--ink-80);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.settings-grid {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .settings-grid { grid-template-columns: 1fr; }
  .app-header { padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
  .app-main { padding: 18px 16px 40px; }
  .scene-wrap { height: 38vh; }
}