:root {
  --bg: #f2ede3;
  --panel: rgba(255, 250, 242, 0.88);
  --panel-strong: rgba(255, 254, 250, 0.96);
  --ink: #1b1711;
  --muted: #6d6255;
  --line: rgba(74, 58, 44, 0.12);
  --line-strong: rgba(74, 58, 44, 0.22);
  --accent: #c65f2f;
  --accent-strong: #a64419;
  --accent-2: #163d4a;
  --accent-soft: rgba(198, 95, 47, 0.1);
  --accent-cool: rgba(22, 61, 74, 0.09);
  --danger: #ab3f30;
  --shadow: 0 28px 80px rgba(44, 34, 24, 0.12);
  --shadow-soft: 0 14px 32px rgba(44, 34, 24, 0.08);
  --radius: 24px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", "Songti SC", Georgia, serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 18%, rgba(222, 158, 93, 0.28), transparent 28%),
    radial-gradient(circle at 88% 10%, rgba(22, 61, 74, 0.14), transparent 24%),
    radial-gradient(circle at 80% 82%, rgba(198, 95, 47, 0.12), transparent 24%),
    linear-gradient(180deg, #f8f3eb 0%, #f0e8db 58%, #ece2d2 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.26), transparent 70%);
  opacity: 0.36;
}

.toast-stack {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 9999;
  display: grid;
  gap: 10px;
  width: min(360px, calc(100vw - 24px));
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 12px 14px;
  border: 1px solid rgba(74, 58, 44, 0.12);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.98), rgba(250, 244, 237, 0.95));
  color: var(--ink);
  box-shadow: 0 18px 36px rgba(44, 34, 24, 0.18);
  backdrop-filter: blur(14px);
  font-size: 0.82rem;
  line-height: 1.45;
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast-info {
  border-color: rgba(22, 61, 74, 0.14);
  box-shadow: 0 18px 36px rgba(22, 61, 74, 0.12);
}

.toast-error {
  border-color: rgba(171, 63, 48, 0.22);
  background:
    linear-gradient(180deg, rgba(255, 248, 245, 0.98), rgba(255, 239, 235, 0.95));
  box-shadow: 0 18px 36px rgba(171, 63, 48, 0.16);
}

.page {
  max-width: 1240px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 14px 16px 18px;
}

.hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 10px;
  padding: 14px 18px 13px;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 252, 246, 0.92), rgba(251, 244, 234, 0.78)),
    linear-gradient(120deg, rgba(198, 95, 47, 0.08), rgba(22, 61, 74, 0.08));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-top {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.hero-copy {
  min-width: 0;
  max-width: 760px;
}

.hero::after {
  content: "";
  position: absolute;
  top: -42px;
  right: -18px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(198, 95, 47, 0.22), rgba(198, 95, 47, 0) 68%);
  pointer-events: none;
}

.hero h1 {
  margin: 0 0 4px;
  max-width: 820px;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.36;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  align-content: flex-start;
  flex: 0 0 auto;
  max-width: 320px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(22, 61, 74, 0.12);
  border-radius: 999px;
  background: rgba(255, 251, 245, 0.8);
  color: var(--accent-2);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-kicker {
  margin-bottom: 4px;
  color: var(--accent-2);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 10px;
  align-items: stretch;
}

.panel {
  position: relative;
  overflow: visible;
  height: 100%;
  min-height: 0;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.46), transparent 18%),
    linear-gradient(135deg, rgba(198, 95, 47, 0.05), transparent 46%);
  pointer-events: none;
}

.panel-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 12px;
}

.panel h2,
.panel h3 {
  margin: 0 0 4px;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.section {
  margin-bottom: 8px;
}

.section:last-child {
  margin-bottom: 0;
}

.panel-inner > .section:last-child {
  flex: 0 0 auto;
}

label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid rgba(74, 58, 44, 0.14);
  border-radius: 12px;
  padding: 8px 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(252, 248, 241, 0.92));
  color: var(--ink);
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

textarea:focus,
input:focus,
select:focus {
  outline: none;
  border-color: rgba(198, 95, 47, 0.52);
  box-shadow:
    0 0 0 4px rgba(198, 95, 47, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

textarea {
  resize: vertical;
  min-height: 84px;
  font-family: var(--mono);
  line-height: 1.36;
}

.button-row,
.pill-row {
  display: grid;
  gap: 8px;
}

.button-row-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pill-row-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

button {
  border: 0;
  border-radius: 999px;
  padding: 7px 10px;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #fff8f1;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 12px 24px rgba(198, 95, 47, 0.24);
  transition:
    transform 0.15s ease,
    opacity 0.15s ease,
    background 0.15s ease,
    box-shadow 0.15s ease;
  width: 100%;
  min-height: 34px;
  justify-self: stretch;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(198, 95, 47, 0.28);
}

button:active {
  transform: translateY(0);
}

button.secondary {
  background: linear-gradient(135deg, #1f5667, var(--accent-2));
  box-shadow: 0 12px 24px rgba(22, 61, 74, 0.22);
}

button.ghost {
  color: var(--ink);
  background: rgba(255, 248, 240, 0.96);
  border: 1px solid rgba(198, 95, 47, 0.16);
  box-shadow: var(--shadow-soft);
}

button.danger {
  background: linear-gradient(135deg, #be5c4d, var(--danger));
  box-shadow: 0 12px 24px rgba(171, 63, 48, 0.18);
}

.pill {
  color: var(--ink);
  background: rgba(255, 248, 239, 0.92);
  border: 1px solid rgba(198, 95, 47, 0.16);
  box-shadow: none;
}

.pill.active {
  color: #fff8f1;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.hint,
.status,
.tiny {
  font-size: 0.76rem;
  color: var(--muted);
}

.hint {
  margin: 0 0 6px;
  line-height: 1.4;
}

.status {
  min-height: 2.4rem;
  padding: 8px 10px;
  border: 1px solid rgba(22, 61, 74, 0.09);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(243, 249, 250, 0.82), rgba(255, 255, 255, 0.7));
  line-height: 1.45;
}

.output-box {
  min-height: 0;
  height: min(36vh, 320px);
  overflow-x: auto;
  overflow-y: auto;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
}

.account-list {
  display: grid;
  gap: 6px;
  margin-top: 6px;
  max-height: min(24vh, 220px);
  overflow: auto;
  padding-right: 2px;
}

.account-card {
  border: 1px solid rgba(74, 58, 44, 0.1);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 250, 244, 0.9));
  padding: 8px 10px;
  box-shadow: var(--shadow-soft);
}

.account-card strong {
  display: block;
  margin-bottom: 4px;
}

.account-card code {
  font-family: var(--mono);
  font-size: 0.76rem;
  word-break: break-all;
  display: inline-block;
  margin-top: 4px;
  padding: 3px 5px;
  border-radius: 8px;
  background: rgba(22, 61, 74, 0.06);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.compact-top {
  margin-top: 6px;
}

.inline-link {
  color: var(--accent);
  word-break: break-all;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.panel-form textarea#sessionInput {
  min-height: 112px;
}

.panel-form textarea#oauthLink {
  min-height: 72px;
}

.panel-form input#oauthCode {
  min-height: 40px;
}

.panel-form .section:last-child {
  margin-top: 2px;
}

.panel-output .section:last-child {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.panel-output .account-list {
  flex: 1 1 auto;
}

@media (max-width: 960px) {
  .toast-stack {
    top: 12px;
    right: 12px;
    left: 12px;
    width: auto;
  }

  body {
    min-height: 100vh;
  }

  .page {
    min-height: 100vh;
    padding: 12px 10px 18px;
  }

  .hero {
    padding: 14px 14px 12px;
    border-radius: 24px;
  }

  .hero-top {
    flex-direction: column;
    gap: 10px;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-meta {
    justify-content: flex-start;
    max-width: none;
  }

  .grid,
  .split {
    grid-template-columns: 1fr;
  }

  .panel-inner {
    padding: 12px;
  }

  .output-box {
    height: min(34vh, 260px);
  }

  .account-list {
    max-height: min(22vh, 180px);
  }

  .button-row-2,
  .pill-row-4 {
    grid-template-columns: 1fr 1fr;
  }

  .output-box,
  .account-list {
    height: auto;
    max-height: none;
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.7rem;
  }

  .panel-form textarea#sessionInput {
    min-height: 96px;
  }

  button,
  .pill {
    width: 100%;
    justify-content: center;
  }

  .button-row-2,
  .pill-row-4 {
    grid-template-columns: 1fr;
  }
}