:root {
  --bg: #f2efe7;
  --bg-2: #dfe8f0;
  --ink: #132033;
  --muted: #4d5a6c;
  --accent: #d9622b;
  --accent-2: #117a65;
  --panel: rgba(255, 255, 255, 0.75);
  --line: rgba(19, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, rgba(217, 98, 43, 0.23), transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(17, 122, 101, 0.2), transparent 32%),
    linear-gradient(160deg, var(--bg), var(--bg-2));
  min-height: 100vh;
}

.page {
  width: min(960px, 92vw);
  margin: 0 auto;
  padding: 3rem 0 4rem;
  display: grid;
  gap: 1.6rem;
}

.hero h1,
.hero h2,
.steps h2,
.notes h2 {
  margin: 0;
  letter-spacing: -0.02em;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.3rem);
}

.eyebrow {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.subtitle {
  margin: 0.5rem 0 0;
  color: var(--muted);
  max-width: 50ch;
}

.panel,
.steps,
.notes {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  backdrop-filter: blur(3px);
  box-shadow: 0 9px 24px rgba(15, 31, 52, 0.08);
}

.panel {
  margin-top: 1.2rem;
  padding: 1.1rem;
  display: grid;
  gap: 0.75rem;
  animation: slide-in 0.45s ease;
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
}

.status-row span {
  font-family: "IBM Plex Mono", monospace;
  color: var(--muted);
}

.version-select-row {
  align-items: center;
}

#firmware-version-select {
  min-width: 180px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.75rem;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88rem;
}

#firmware-version-select:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.install-wrap {
  margin-top: 0.25rem;
}

esp-web-install-button::part(button),
esp-web-install-button button,
button[slot="activate"] {
  all: unset;
  display: inline-block;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.78rem 1.1rem;
  background: linear-gradient(135deg, var(--accent), #ea7f3e);
  color: #fff;
  cursor: pointer;
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}

esp-web-install-button::part(button):hover,
button[slot="activate"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(217, 98, 43, 0.36);
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.release-notes {
  margin-top: 0.45rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.release-notes h2 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

#latest-changelog {
  margin: 0;
  padding-left: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.92rem;
}

#latest-changelog > li {
  margin-bottom: 0.55rem;
}

#latest-changelog > li:last-child {
  margin-bottom: 0;
}

.release-section-heading {
  margin: 0 0 0.25rem;
  color: var(--ink);
  font-weight: 700;
}

.release-section-subheading {
  margin: 0 0 0.25rem;
  color: var(--ink);
  font-weight: 600;
}

.release-section-text {
  margin: 0 0 0.35rem;
  color: var(--muted);
}

.release-section-list {
  margin: 0 0 0.35rem;
  padding-left: 1.1rem;
}

.release-section-list li {
  margin-bottom: 0.35rem;
}

.release-section-list ul {
  margin-top: 0.25rem;
  padding-left: 1.1rem;
}

.release-notes code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.86em;
  color: var(--ink);
  background: rgba(19, 32, 51, 0.09);
  border: 1px solid rgba(19, 32, 51, 0.18);
  border-radius: 4px;
  padding: 0.08em 0.34em;
}

.release-empty {
  color: var(--muted);
}

.changelog-link-wrap {
  margin: 0.45rem 0 0;
}

#changelog-link {
  color: var(--accent-2);
  text-decoration: none;
  font-weight: 600;
}

#changelog-link:hover {
  text-decoration: underline;
}

.steps,
.notes {
  padding: 1.1rem;
  animation: fade-in 0.55s ease;
}

.debug-panel {
  border: 1px dashed rgba(19, 32, 51, 0.35);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 9px 24px rgba(15, 31, 52, 0.08);
  padding: 1.1rem;
}

.debug-panel p {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

#debug-copy {
  all: unset;
  display: inline-block;
  margin-top: 0.75rem;
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  background: linear-gradient(135deg, var(--accent-2), #16a58a);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}

#debug-copy:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(17, 122, 101, 0.34);
}

#debug-log {
  margin: 0.75rem 0 0;
  border: 1px solid rgba(19, 32, 51, 0.2);
  border-radius: 10px;
  padding: 0.7rem;
  min-height: 120px;
  max-height: 280px;
  overflow: auto;
  background: rgba(14, 26, 43, 0.94);
  color: #d7e3f0;
  font-size: 0.78rem;
  line-height: 1.35;
  font-family: "IBM Plex Mono", monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

ol,
ul {
  margin: 0.55rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

li {
  margin-bottom: 0.45rem;
}

@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 680px) {
  .page {
    padding-top: 1.8rem;
  }

  .status-row {
    flex-direction: column;
    gap: 0.25rem;
  }

  #firmware-version-select {
    width: 100%;
  }
}