/* ---------- App shell ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 14px 16px;
  background: linear-gradient(180deg, rgba(7, 8, 10, 0.92) 0%, rgba(7, 8, 10, 0.7) 80%, transparent 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--scan) 0%, #2a9bb8 100%);
  display: grid;
  place-items: center;
  box-shadow: 0 0 16px var(--scan-glow);
  flex-shrink: 0;
}

.brand-mark svg {
  width: 16px;
  height: 16px;
  color: #04202a;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.brand-tag {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

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

/* ---------- Main content ---------- */
.main {
  flex: 1;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 8px 16px 48px;
}

/* ---------- Views (stage management) ---------- */
.view {
  display: none;
  animation: viewIn 0.45s var(--ease-out) both;
}

.view.active {
  display: block;
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Hero / Idle ---------- */
.hero {
  text-align: center;
  padding: 28px 0 20px;
}

.hero h1 {
  font-size: 26px;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 8px;
}

.hero h1 span {
  background: linear-gradient(120deg, var(--scan) 0%, #a8f0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--muted);
  font-size: 14px;
  max-width: 320px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ---------- URL bar ---------- */
.url-bar {
  display: flex;
  gap: 8px;
  margin: 24px 0 8px;
  position: relative;
}

.url-bar input {
  flex: 1;
  min-width: 0;
  background: var(--panel-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--text);
  font-size: 15px;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  backdrop-filter: blur(8px);
}

.url-bar input::placeholder {
  color: #8a8f98;
  opacity: 1;
}

.url-bar input:focus {
  outline: none;
  border-color: var(--border-cyan);
  box-shadow: 0 0 0 3px var(--scan-soft), var(--glow-cyan);
}

.url-bar .scan-btn {
  flex-shrink: 0;
  background: var(--scan);
  color: #04202a;
  border-radius: var(--radius);
  padding: 0 20px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: transform var(--duration-fast), box-shadow var(--duration-fast), background var(--duration-fast);
  box-shadow: 0 0 20px rgba(98, 230, 255, 0.35);
}

.url-bar .scan-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 0 28px rgba(98, 230, 255, 0.5);
}

.url-bar .scan-btn:active:not(:disabled) {
  transform: translateY(0);
}

.url-bar .scan-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.url-bar .scan-btn svg {
  width: 16px;
  height: 16px;
}

.hint {
  text-align: center;
  font-size: 12px;
  color: var(--muted-dark);
  margin-bottom: 28px;
}

/* ---------- Glass card base ---------- */
.glass {
  background: var(--panel-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.glass-strong {
  background: var(--panel-glass-strong);
  border: 1px solid var(--border-strong);
}