/* ===== Piglet Web Flasher — Style ===== */
:root {
  color-scheme: dark;
  --bg:          #0a0908;
  --bg-dark:     #060504;
  --surface:     #15110d;
  --copper:      #d4922a;
  --copper-dim:  #8a6520;
  --copper-glow: rgba(212, 146, 42, 0.15);
  --gold:        #e8b44c;
  --bone:        #e8e2d4;
  --bone-dim:    #a89e8b;
  --ash:         #6b6358;
  --pink:        #f5a0b8;
  --pink-dim:    #c47a93;
}

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

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--bone);
  font-family: "Inter", system-ui, sans-serif;
  font-weight: 300;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* subtle vignette */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(
    ellipse at center top,
    transparent 0%,
    rgba(0, 0, 0, 0.5) 80%
  );
  pointer-events: none;
  z-index: 1;
}

/* ---- layout ---- */
.page {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

/* ---- hero ---- */
.hero {
  position: relative;
  margin: 2rem auto 1.5rem;
  max-width: 420px;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(212, 146, 42, 0.2);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 60px var(--copper-glow);
}
.hero img {
  display: block;
  width: 100%;
  height: auto;
  filter: contrast(1.05) saturate(0.95);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 50%,
    rgba(10, 9, 8, 0.6) 85%,
    var(--bg) 100%
  );
  pointer-events: none;
}

/* ---- title ---- */
.title {
  text-align: center;
  margin-bottom: 2rem;
}
.oink {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  filter: drop-shadow(0 0 12px var(--pink-dim));
}
h1 {
  font-family: "Russo One", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  letter-spacing: 0.15em;
  margin: 0 0 0.4rem;
  color: var(--bone);
  text-transform: uppercase;
  text-shadow: 0 0 30px var(--copper-glow);
}
.tagline {
  font-family: "Russo One", system-ui, sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 1rem;
}
.desc {
  max-width: 42ch;
  margin: 0.5rem auto 0;
  color: var(--bone-dim);
  font-size: 0.95rem;
}
.desc.small {
  font-size: 0.82rem;
  margin-top: 0.5rem;
  color: var(--ash);
}

/* ---- divider ---- */
.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0;
  color: var(--copper-dim);
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(212, 146, 42, 0.35),
    transparent
  );
}
.divider span {
  font-size: 1.2rem;
  color: var(--copper);
  opacity: 0.7;
}

/* ---- flash panel ---- */
.flash-panel {
  background: linear-gradient(
    180deg,
    rgba(21, 17, 13, 0.95) 0%,
    rgba(10, 9, 8, 0.95) 100%
  );
  border: 1px solid rgba(212, 146, 42, 0.2);
  border-radius: 6px;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
}
/* corner accents */
.flash-panel::before,
.flash-panel::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--copper-dim);
}
.flash-panel::before {
  top: -1px; left: -1px;
  border-right: none; border-bottom: none;
}
.flash-panel::after {
  bottom: -1px; right: -1px;
  border-left: none; border-top: none;
}

.flash-panel h2 {
  font-family: "Russo One", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 1.15rem;
  color: var(--copper);
  margin: 0 0 0.5rem;
}
.flash-panel p {
  margin: 0 0 1.25rem;
  color: var(--bone-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* chip badges */
.chip-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.chip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: rgba(212, 146, 42, 0.06);
  border: 1px solid rgba(212, 146, 42, 0.25);
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--bone-dim);
}
.chip-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 6px var(--copper);
}

/* flash buttons */
.flash-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

button.btn-flash {
  font-family: "Russo One", system-ui, sans-serif;
  font-weight: 400;
  font-size: 0.88rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--bg);
  background: linear-gradient(
    180deg,
    var(--gold) 0%,
    var(--copper) 50%,
    var(--copper-dim) 100%
  );
  border: 1px solid var(--copper-dim);
  padding: 0.85rem 1.8rem;
  cursor: pointer;
  border-radius: 3px;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4) inset,
    0 6px 20px rgba(212, 146, 42, 0.12);
}
button.btn-flash:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4) inset,
    0 8px 28px rgba(212, 146, 42, 0.25);
}
button.btn-flash:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

button.btn-unsupported {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8b2626;
  background: transparent;
  border: 1px solid #8b2626;
  padding: 0.7rem 1.2rem;
  cursor: not-allowed;
  border-radius: 3px;
}

/* hint text */
.hint {
  margin-top: 1rem;
  color: var(--bone-dim);
  font-size: 0.8rem;
  line-height: 1.5;
}
.hint strong {
  color: var(--copper);
  font-weight: 500;
}
.hint code {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  color: var(--gold);
  background: rgba(212, 146, 42, 0.08);
  padding: 0.05rem 0.35rem;
  border-radius: 2px;
  font-size: 0.76rem;
}

/* bootloader mode steps */
.boot-steps {
  background: rgba(212, 146, 42, 0.06);
  border: 1px solid rgba(212, 146, 42, 0.25);
  border-left: 3px solid var(--copper);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  text-align: left;
}
.boot-title {
  font-weight: 500;
  color: var(--copper);
  margin: 0 0 0.5rem;
  font-size: 0.88rem;
}
.boot-steps ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--bone-dim);
  font-size: 0.85rem;
  line-height: 1.8;
}
.boot-steps ol code {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  color: var(--gold);
  background: rgba(212, 146, 42, 0.08);
  padding: 0.05rem 0.35rem;
  border-radius: 2px;
  font-size: 0.76rem;
}
.boot-note {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--ash);
  line-height: 1.5;
}
.boot-note code {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  color: var(--gold);
  background: rgba(212, 146, 42, 0.08);
  padding: 0.05rem 0.35rem;
  border-radius: 2px;
  font-size: 0.76rem;
}

/* browser warning */
.browser-warn {
  display: none;
  margin-top: 1.5rem;
  padding: 0.75rem 1rem;
  background: rgba(139, 38, 38, 0.1);
  border: 1px solid rgba(139, 38, 38, 0.4);
  border-radius: 4px;
  color: #d9a3a3;
  font-size: 0.85rem;
  text-align: center;
}

/* ---- footer ---- */
.footer {
  margin-top: 2.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--ash);
  letter-spacing: 0.04em;
}
.footer code {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  color: var(--bone-dim);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
  font-size: 0.76rem;
}
.footer-row {
  margin: 0.3rem 0;
}
.footer-links {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--copper);
  text-decoration: none;
}
.footer-links a:hover {
  text-decoration: underline;
}
.footer-links span {
  color: var(--ash);
}
.footer-brand {
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--ash);
}
.footer-brand a {
  color: var(--copper);
  text-decoration: none;
}
.footer-brand a:hover {
  text-decoration: underline;
}

/* ---- responsive ---- */
@media (max-width: 520px) {
  .hero { max-width: 100%; }
  h1 { letter-spacing: 0.1em; }
  .flash-panel { padding: 1.5rem 1rem; }
  .flash-buttons { flex-direction: column; align-items: center; }
  button.btn-flash { width: 100%; max-width: 280px; }
}

/* ---- flash overlay ---- */
.flash-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(10, 9, 8, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
}
.flash-overlay[hidden] {
  display: none;
}
.flash-dialog {
  background: var(--surface);
  border: 1px solid var(--copper);
  border-radius: 12px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  text-align: center;
}
.flash-dialog h3 {
  margin: 0 0 0.5rem;
  color: var(--gold);
  font-family: "Russo One", system-ui, sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}
.flash-progress-track {
  background: var(--bg);
  border-radius: 6px;
  height: 14px;
  overflow: hidden;
  margin: 1rem 0 0.25rem;
}
.flash-progress-fill {
  background: linear-gradient(90deg, var(--copper), var(--gold));
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 6px;
}
.flash-pct {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  color: var(--gold);
  font-size: 0.85rem;
  margin: 0.25rem 0;
}
.flash-status {
  color: var(--bone);
  margin: 0.5rem 0;
  font-size: 0.9rem;
}
.flash-log {
  background: var(--bg);
  color: var(--ash);
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 0.68rem;
  padding: 0.75rem;
  border-radius: 6px;
  max-height: 180px;
  overflow-y: auto;
  text-align: left;
  margin: 1rem 0;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

/* ---- serial monitor ---- */
.flash-confirm-row {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.flash-confirm-row[hidden] {
  display: none;
}
button.btn-logs {
  font-family: "Russo One", system-ui, sans-serif;
  font-weight: 400;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  background: transparent;
  border: 1px solid var(--copper-dim);
  padding: 0.7rem 1.5rem;
  cursor: pointer;
  border-radius: 3px;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
button.btn-logs:hover {
  background: rgba(212, 146, 42, 0.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212, 146, 42, 0.15);
}
button.btn-logs:active {
  transform: translateY(0);
}
.btn-small {
  padding: 0.5rem 1rem !important;
  font-size: 0.75rem !important;
}

.serial-dialog {
  max-width: 600px !important;
}
.serial-baud {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.serial-baud label {
  color: var(--bone-dim);
  font-size: 0.82rem;
}
.serial-baud select {
  background: var(--bg);
  color: var(--gold);
  border: 1px solid var(--copper-dim);
  border-radius: 4px;
  padding: 0.3rem 0.5rem;
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 0.78rem;
  cursor: pointer;
}
.serial-log-area {
  max-height: 320px;
  min-height: 200px;
}
.serial-input-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.serial-input-row input {
  flex: 1;
  background: var(--bg);
  color: var(--bone);
  border: 1px solid var(--copper-dim);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 0.78rem;
}
.serial-input-row input::placeholder {
  color: var(--ash);
}
.serial-input-row input:focus {
  outline: none;
  border-color: var(--copper);
}
.serial-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}