:root {
  --dev-bg: #eaf7fc;
  --dev-ink: #12363c;
  --dev-muted: #4a6b70;
  --dev-card: #f8fdff;
  --dev-line: #b9d7df;
  --dev-accent: #2d7b45;
  --dev-accent-2: #2e86b8;
  --dev-shadow: 0 20px 50px rgba(18, 54, 60, 0.12);
}

.dev-signin-page {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--dev-ink);
  background:
    radial-gradient(900px 500px at -10% -20%, rgba(46, 134, 184, 0.16), transparent 70%),
    radial-gradient(700px 500px at 110% 10%, rgba(45, 123, 69, 0.15), transparent 65%),
    var(--dev-bg);
}

.dev-signin-header {
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dev-signin-brand {
  text-decoration: none;
  color: var(--dev-ink);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.dev-signin-link {
  text-decoration: none;
  color: var(--dev-accent);
  font-weight: 500;
}

.dev-signin-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 20px 36px;
}

.dev-signin-hero {
  margin-bottom: 20px;
}

.dev-signin-kicker {
  margin: 0;
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--dev-line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dev-accent);
  background: rgba(255, 255, 255, 0.7);
}

.dev-signin-hero h1 {
  margin: 10px 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.1;
}

.dev-signin-hero p {
  margin: 0;
  max-width: 72ch;
  color: var(--dev-muted);
}

.dev-signin-shell {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr);
}

.dev-signin-card,
.dev-signin-guide {
  border: 1px solid var(--dev-line);
  border-radius: 16px;
  background: var(--dev-card);
  box-shadow: var(--dev-shadow);
}

.dev-signin-card {
  padding: 20px;
}

.dev-signin-guide {
  padding: 20px 20px 14px;
}

.dev-signin-guide h2,
.dev-signin-card h2,
.dev-signin-card h3 {
  margin: 0 0 8px;
}

.dev-signin-guide ol {
  margin: 10px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 7px;
}

.dev-signin-muted {
  margin: 0 0 12px;
  color: var(--dev-muted);
}

.dev-exchange-badge {
  margin: 0 0 12px;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(31, 122, 102, 0.35);
  background: rgba(31, 122, 102, 0.12);
  color: #0e5a4b;
  font-size: 0.8rem;
  font-weight: 600;
}

.dev-auth-switch {
  display: inline-flex;
  gap: 6px;
  margin: 2px 0 12px;
  padding: 4px;
  border: 1px solid var(--dev-line);
  border-radius: 999px;
  background: #fff;
}

.dev-auth-switch button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  font-weight: 600;
  color: var(--dev-muted);
  background: transparent;
  cursor: pointer;
}

.dev-auth-switch button.is-active {
  color: #fff;
  background: var(--dev-accent);
}

.dev-auth-view {
  display: none;
}

.dev-auth-view.is-active {
  display: block;
}

.dev-register-intro {
  margin: 0 0 14px;
  padding: 12px 14px;
  border: 1px solid rgba(46, 134, 184, 0.3);
  border-radius: 12px;
  background: rgba(46, 134, 184, 0.1);
}

.dev-register-intro-title {
  margin: 0 0 7px;
  color: #1d688f;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.dev-register-checklist {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 5px;
  color: #225e73;
  font-size: 0.92rem;
}

.dev-signin-form {
  display: grid;
  gap: 8px;
}

.dev-signin-form label {
  font-size: 0.88rem;
  font-weight: 600;
}

.dev-pw-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.dev-pw-wrap input {
  flex: 1;
  padding-right: 42px !important;
}

.dev-pw-toggle {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: none !important;
  border-radius: 8px !important;
  padding: 0 !important;
  background: transparent !important;
  color: var(--dev-muted) !important;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 120ms ease, background-color 120ms ease;
}

.dev-pw-toggle:hover {
  color: var(--dev-ink) !important;
  background: rgba(0,0,0,0.05) !important;
  transform: translateY(-50%) !important;
  box-shadow: none !important;
}

.dev-pw-eye {
  width: 18px;
  height: 18px;
}

/* Default (password hidden): show open-eye, hide slash */
.dev-pw-eye-closed { display: none; }

/* When visible (aria-pressed=true): show slash, hide open-eye */
.dev-pw-toggle[aria-pressed="true"] .dev-pw-eye-closed { display: block; }
.dev-pw-toggle[aria-pressed="true"] .dev-pw-eye-open { display: none; }

.dev-signin-form input,
.dev-verify-grid input,
#token-output {
  width: 100%;
  border: 1px solid var(--dev-line);
  border-radius: 10px;
  padding: 11px 12px;
  color: var(--dev-ink);
  background: #fff;
  font: inherit;
  box-sizing: border-box;
}

.dev-signin-form input:focus,
.dev-verify-grid input:focus,
#token-output:focus {
  outline: 2px solid rgba(31, 122, 102, 0.25);
  outline-offset: 1px;
}

.dev-signin-form button,
.dev-verify-grid button,
.dev-token-actions button {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, background-color 140ms ease;
}

#signin-submit,
#verify-submit,
#copy-token {
  background: var(--dev-accent);
  color: #fff;
}

#signin-submit:hover,
#verify-submit:hover,
#copy-token:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(31, 122, 102, 0.22);
}

#open-obsidian-help {
  background: #fff;
  color: var(--dev-accent-2);
  border-color: var(--dev-accent-2);
}

#open-obsidian-help:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(204, 95, 47, 0.16);
}

#register-submit,
#verify-resend {
  background: #fff;
  color: var(--dev-accent-2);
  border-color: var(--dev-accent-2);
}

#register-submit:hover,
#verify-resend:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(46, 134, 184, 0.2);
}

#open-obsidian-app {
  background: #fff;
  color: var(--dev-accent);
  border-color: var(--dev-accent);
}

#open-obsidian-app:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(31, 122, 102, 0.16);
}

.dev-signin-status {
  margin-top: 12px;
  min-height: 22px;
  font-size: 0.95rem;
  color: var(--dev-muted);
}

.dev-inline-switch {
  margin: 12px 0 0;
  font-size: 0.92rem;
  color: var(--dev-muted);
}

.dev-inline-switch button {
  border: 0;
  padding: 0;
  margin-left: 6px;
  background: transparent;
  color: var(--dev-accent-2);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.dev-inline-switch button:hover {
  color: #1d688f;
}

.dev-signin-page.mode-register .dev-auth-switch button.is-active {
  background: var(--dev-accent-2);
}

.dev-signin-status.is-error {
  color: #9a2f2f;
}

.dev-signin-status.is-success {
  color: #18614f;
}

.dev-verify-panel,
.dev-token-panel {
  margin-top: 14px;
  border-top: 1px dashed var(--dev-line);
  padding-top: 14px;
}

.dev-verify-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.dev-verify-actions {
  margin-top: 8px;
}

.dev-verify-token-hint {
  margin: 0 0 10px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(31, 122, 102, 0.25);
  background: rgba(31, 122, 102, 0.08);
  color: #0f5f4e;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.84rem;
}

#token-output {
  min-height: 118px;
  resize: vertical;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.85rem;
}

.dev-token-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
  color: var(--dev-muted);
  font-size: 0.85rem;
}

.dev-token-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

@media (max-width: 900px) {
  .dev-signin-shell {
    grid-template-columns: minmax(0, 1fr);
  }
}