:root {
  --bg: #0a0b0f;
  --panel: #12131a;
  --panel2: #0f1016;
  --line: rgba(255, 255, 255, .08);
  --text: #e6e7eb;
  --muted: #9aa0aa;
  --accent: #60a5fa;
  --ok: #34d399;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  background:
    radial-gradient(900px 400px at 20% -10%, rgba(96, 165, 250, .08), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(52, 211, 153, .06), transparent 60%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hidden {
  display: none;
}

/* ===== Layout ===== */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(10, 11, 15, .85);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(180deg, #1f2937, #0b0c11);
  display: grid;
  place-items: center;
  font-weight: 800;
}

.brand-title {
  font-weight: 700;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
}

nav {
  display: flex;
  gap: 8px;
}

nav button {
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
}

nav button.active {
  color: var(--text);
  border-color: var(--accent);
}

.pill {
  padding: 6px 12px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
}

.status {
  display: flex;
  gap: 10px;
  font-size: 12px;
  align-items: center;
}

.pill--accent {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(96, 165, 250, .12);
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
}

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  margin-right: 6px;
}

main {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 22px;
  flex: 1;
}

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .25);
}

h1 {
  margin: 0 0 12px;
  font-size: 24px;
}

h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ===== Auth ===== */
.login-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.login-card {
  max-width: 100%;
  margin: 0;
  text-align: left;
}

.input-field {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #05060a;
  color: var(--text);
}

button.primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
  font-weight: 600;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}

button:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.small {
  padding: 6px 10px;
  font-size: 12px;
}

.form-footer {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}

.error-text {
  color: #fb7185;
  font-size: 12px;
  margin-top: 10px;
}

/* ===== Chat ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.chat-thread {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #05060a;
  min-height: 240px;
  max-height: 520px;
  overflow-y: auto;
  padding: 14px;
  margin: 10px 0 14px;
}

.chat-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 12px;
}

.chat-sidebar {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: rgba(255, 255, 255, .02);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-sidebar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-history-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #0b0c11;
  cursor: pointer;
  display: grid;
  gap: 6px;
  transition: border-color .2s ease, background .2s ease;
}

.chat-history-item:hover {
  border-color: var(--accent);
  background: rgba(96, 165, 250, .06);
}

.chat-history-item.active {
  border-color: var(--accent);
  background: rgba(96, 165, 250, .12);
}

.chat-history-title {
  font-weight: 700;
  color: var(--text);
}

.chat-history-meta {
  font-size: 12px;
  color: var(--muted);
}

.chat-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-main__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.chat-status {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}

.chat-status__indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-color: var(--accent);
  color: var(--text);
  background: linear-gradient(120deg, rgba(96, 165, 250, .16), rgba(96, 165, 250, .06));
  box-shadow: 0 0 0 0 rgba(96, 165, 250, .35);
  animation: pulse-glow 1.8s ease-in-out infinite;
}

.chat-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.chat-message {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.chat-badge {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.chat-bubble {
  background: rgba(255, 255, 255, .04);
  border-radius: 12px;
  padding: 10px 12px;
  flex: 1;
  line-height: 1.6;
  white-space: normal;
  word-break: break-word;
}

.chat-message.user .chat-bubble {
  background: rgba(96, 165, 250, .1);
}

.chat-bubble p {
  margin: 0 0 8px;
}

.chat-bubble p:last-child {
  margin-bottom: 0;
}

.chat-bubble a {
  color: var(--accent);
  text-decoration: underline;
  word-break: break-all;
}

.chat-bubble code {
  background: rgba(255, 255, 255, .08);
  padding: 2px 6px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, SFMono, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.chat-bubble pre {
  background: rgba(255, 255, 255, .06);
  border-radius: 12px;
  padding: 10px 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
  margin: 8px 0;
}

.chat-bubble pre code {
  background: transparent;
  padding: 0;
}

.chat-input {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

textarea {
  flex: 1;
  resize: none;
  min-height: 56px;
  background: #05060a;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  padding: 12px;
}

textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.chat-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.chat-note {
  font-size: 12px;
  color: var(--muted);
}

.counter {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* ===== SUNO ===== */
.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.toggle input {
  accent-color: var(--accent);
}

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

.suno-switch__label {
  font-size: 12px;
  color: var(--text);
  font-weight: 600;
}

.suno-switch__control {
  position: relative;
  width: 68px;
  height: 32px;
  display: inline-block;
}

.suno-switch__control input {
  opacity: 0;
  width: 0;
  height: 0;
}

.suno-switch__slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: linear-gradient(90deg, rgba(96, 165, 250, .9), rgba(52, 211, 153, .9));
  border-radius: 999px;
  transition: background .2s ease;
  border: 1px solid var(--line);
}

.suno-switch__slider::before {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  left: 3px;
  bottom: 3px;
  border-radius: 50%;
  background: #0b0c11;
  transition: transform .2s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .35);
}

.suno-switch__control input:checked + .suno-switch__slider::before {
  transform: translateX(34px);
}

.suno-switch__control input:checked + .suno-switch__slider {
  background: linear-gradient(90deg, #fb7185, #fbbf24);
}

.output {
  background: #05060a;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  min-height: 180px;
  font-size: 13px;
}

/* ===== Dashboard ===== */
.dashboard-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.stat-block {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, .02);
}

.stat-title {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
}

footer {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  padding: 16px;
}

/* ===== Usage ===== */
.usage-panel {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, .02);
}

.usage-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.usage-panel__title {
  font-size: 16px;
  font-weight: 700;
}

.usage-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.usage-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: #0b0c11;
}

.usage-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}

.usage-title {
  font-size: 14px;
  color: var(--muted);
}

.usage-count {
  font-size: 18px;
  font-weight: 700;
}

.usage-note {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

.meter {
  position: relative;
  width: 100%;
  height: 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
  border: 1px solid var(--line);
}

.meter span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, rgba(96, 165, 250, .9), rgba(52, 211, 153, .9));
  transition: width .3s ease;
}

.meter--suno span {
  background: linear-gradient(90deg, #fb7185, #fbbf24);
}

/* ===== SUNO ===== */
.suno-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.suno-header .stat-title {
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

.suno-header h2 {
  margin-bottom: 6px;
}

.suno-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}

.suno-panel,
.suno-results {
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 16px;
  padding: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .02));
  box-shadow: 0 12px 36px rgba(0, 0, 0, .25);
}

.suno-panel__header,
.suno-results__header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 10px;
}

.suno-switch {
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
  gap: 14px;
}

.suno-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.suno-actions__buttons {
  display: flex;
  align-items: center;
  gap: 12px;
}

.loading-with-spinner {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.chat-status__indicator.loading-with-spinner {
  gap: 8px;
}

.chat-status__indicator.loading-with-spinner::before {
  border-top-color: var(--accent);
  border-left-color: var(--accent);
}

.loading-with-spinner::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--line);
  border-top-color: #fbbf24;
  animation: spin 1s linear infinite;
}

.suno-result-list {
  display: grid;
  gap: 12px;
}

.suno-track {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0b0c11;
}

.suno-track__cover {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  object-fit: cover;
  background: linear-gradient(135deg, #1f2937, #111827);
}

.suno-track__title {
  font-weight: 700;
}

.suno-track__meta {
  color: var(--muted);
  font-size: 13px;
  margin: 4px 0 8px;
}

.suno-track__actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.suno-track audio {
  width: 100%;
  margin-top: 6px;
}

.empty-state {
  padding: 16px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 12px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse-glow {
  0% {
    box-shadow: 0 0 0 0 rgba(96, 165, 250, .35);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(96, 165, 250, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(96, 165, 250, 0);
  }
}

/* ===== Admin ===== */
.admin-hero {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.admin-hero__copy {
  max-width: 640px;
}

.admin-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  flex: 1;
  min-width: 260px;
}

.mini-stat {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, .03);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: grid;
  gap: 6px;
}

.checklist li {
  position: relative;
  padding-left: 20px;
  color: var(--text);
  font-size: 13px;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
}

.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, .03);
  color: var(--muted);
  margin: 14px 0;
}

.admin-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  margin-bottom: 14px;
}

.admin-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, .02);
}

.admin-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px 14px;
}

.form-grid label {
  font-size: 12px;
  color: var(--muted);
  display: grid;
  gap: 6px;
}

.admin-card__meta {
  margin-bottom: 10px;
}

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

.form-help {
  margin: 6px 0 10px;
}

.form-help > div {
  font-weight: 700;
  margin-bottom: 4px;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 12px;
}

#userTable {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

#userTable th,
#userTable td {
  border-bottom: 1px solid var(--line);
  padding: 8px 6px;
  text-align: left;
}

#userTable th {
  color: var(--muted);
}

#userTable button {
  padding: 6px 10px;
  font-size: 12px;
}

.table-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pagination-indicator {
  min-width: 80px;
  text-align: center;
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    width: 100%;
  }

  nav button {
    flex: 1;
  }

  .chat-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .chat-layout {
    grid-template-columns: 1fr;
  }

  .chat-status {
    align-items: flex-start;
  }
}