:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface-2: #1a1a24;
  --border: #26262f;
  --text: #ededf2;
  --text-mute: #8a8a99;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --ok: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;
  --type-flame: #f97316;
  --type-aqua: #38bdf8;
  --type-leaf: #4ade80;
  --type-neutral: #a1a1aa;
  --radius: 10px;
  --font:
    ui-sans-serif, "Inter", "Hiragino Sans", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
}

/* ---------- layout ---------- */

.container {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
}

.section {
  padding: 56px 0 16px;
}

.section > h2 {
  font-size: 28px;
  margin: 0 0 8px;
}

.section-sub {
  color: var(--text-mute);
  margin: 0 0 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 0;
}

.nav-logo {
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text);
  font-size: 16px;
}

.nav-logo:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 16px;
  margin-left: auto;
  align-items: center;
}

.nav-links a,
.nav-links button {
  white-space: nowrap;
}

.nav-links a:not(.btn) {
  color: var(--text-mute);
  font-size: 14px;
}

.nav-links a:not(.btn):hover {
  color: var(--text);
  text-decoration: none;
}

/* ---------- buttons ---------- */

button,
.btn {
  appearance: none;
  display: inline-block;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    border-color 0.15s,
    background 0.15s,
    opacity 0.15s;
}

button:hover,
.btn:hover {
  border-color: var(--text-mute);
  text-decoration: none;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(120deg, #4c3bcf, #0e7490);
  border: 0;
  color: #fff;
  font-weight: 700;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-ghost {
  background: transparent;
}

.lang-select {
  appearance: none;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 28px 6px 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path fill='%238a8a99' d='M2 4l4 4 4-4z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 10px;
}

.lang-select:hover {
  border-color: var(--text-mute);
}

/* ---------- cards / panels ---------- */

.card {
  display: block;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.card:hover {
  text-decoration: none;
}

a.card:hover {
  border-color: var(--accent);
}

.card h3 {
  margin: 6px 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--text-mute);
  font-size: 14px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-top: 16px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 999px;
  padding: 2px 10px;
}

.muted {
  color: var(--text-mute);
  font-size: 13px;
}

.status {
  font-size: 13px;
  font-family: var(--mono);
}

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

.status-dot.off {
  background: var(--bad);
}

/* ---------- hero ---------- */

.hero {
  padding: 88px 0 48px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.2;
  margin: 16px 0;
  background: linear-gradient(110deg, var(--text) 30%, var(--accent) 70%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  max-width: 40em;
  margin: 0 auto 28px;
  color: var(--text-mute);
  font-size: 17px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- pricing ---------- */

.plan-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.plan-featured {
  border-color: var(--accent);
  box-shadow: 0 0 32px rgba(124, 92, 255, 0.15);
}

.plan-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  text-transform: uppercase;
}

.plan-price {
  font-size: 36px;
  font-weight: 800;
}

.plan-price small {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-mute);
}

.plan-card ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  color: var(--text-mute);
  font-size: 14px;
}

.plan-card li {
  padding: 5px 0;
  border-top: 1px solid var(--border);
}

.plan-card li strong {
  color: var(--text);
}

[hidden] {
  display: none !important;
}

.plan-card .signup,
.plan-card .signup-key {
  margin-top: auto;
  padding-top: 16px;
}

.signup {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.signup input {
  flex: 1 1 160px;
  min-width: 0;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  font: inherit;
  font-size: 14px;
}

.signup input:focus {
  outline: none;
  border-color: var(--accent);
}

.signup-note {
  display: block;
  font-size: 12px;
  color: var(--warn);
  margin-bottom: 6px;
}

.signup-key-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.signup-key-row code {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--mono);
  font-size: 12px;
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
}

.plan-card .plan-cta,
.plan-card .plan-upgrade {
  width: 100%;
  margin-top: 16px;
}

.signup-msg {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--ok);
}

.signup-msg.bad {
  color: var(--bad);
}

/* ---------- code block ---------- */

pre.code-block {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  color: #c8c8d6;
}

pre.code-block .k {
  color: var(--accent-2);
}

pre.code-block .s {
  color: #a5e6a1;
}

pre.code-block .c {
  color: var(--text-mute);
}

/* ---------- forms ---------- */

label {
  display: block;
  color: var(--text-mute);
  font-size: 13px;
  font-family: var(--mono);
  margin-bottom: 6px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* ---------- battle UI ---------- */

.row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.row > * {
  flex: 1 1 300px;
}

.arena {
  display: grid;
  gap: 12px;
}

.mon-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  width: 100%;
}

.mon-card.dead {
  opacity: 0.35;
}

.mon-card.active {
  border-color: var(--accent);
}

.mon-avatar {
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 30px;
  background: var(--surface-2);
  border: 2px solid var(--border);
}

.mon-avatar.t-flame {
  border-color: var(--type-flame);
  background: rgba(249, 115, 22, 0.12);
}

.mon-avatar.t-aqua {
  border-color: var(--type-aqua);
  background: rgba(56, 189, 248, 0.12);
}

.mon-avatar.t-leaf {
  border-color: var(--type-leaf);
  background: rgba(74, 222, 128, 0.12);
}

.mon-avatar.t-neutral {
  border-color: var(--type-neutral);
  background: rgba(161, 161, 170, 0.12);
}

.mon-body {
  flex: 1;
  min-width: 0;
}

.mon-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.mon-head strong {
  font-size: 16px;
}

.mon-stats {
  color: var(--text-mute);
  font-size: 12px;
  font-family: var(--mono);
}

.type-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: 999px;
  padding: 1px 9px;
  color: #0a0a0f;
}

.type-badge.t-flame {
  background: var(--type-flame);
}

.type-badge.t-aqua {
  background: var(--type-aqua);
}

.type-badge.t-leaf {
  background: var(--type-leaf);
}

.type-badge.t-neutral {
  background: var(--type-neutral);
}

.hp-bar {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
  margin-top: 8px;
  overflow: hidden;
}

.hp-bar > i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--ok);
  transition:
    width 0.3s,
    background 0.3s;
}

.hp-bar > i.mid {
  background: var(--warn);
}

.hp-bar > i.low {
  background: var(--bad);
}

.moves {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.move-btn {
  text-align: left;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.move-btn .move-name {
  font-weight: 700;
  font-size: 14px;
}

.move-btn .move-meta {
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-mute);
}

.move-btn.t-flame:hover {
  border-color: var(--type-flame);
}

.move-btn.t-aqua:hover {
  border-color: var(--type-aqua);
}

.move-btn.t-leaf:hover {
  border-color: var(--type-leaf);
}

.move-btn.t-neutral:hover {
  border-color: var(--type-neutral);
}

.pick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.battle-log,
.log {
  min-height: 7em;
  max-height: 16em;
  overflow-y: auto;
  white-space: pre-wrap;
  color: var(--text-mute);
  font-size: 13px;
  font-family: var(--mono);
  line-height: 1.7;
  margin-top: 8px;
}

.bars {
  display: grid;
  gap: 6px;
}

.bar {
  display: grid;
  grid-template-columns: 1fr 56px;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  font-family: var(--mono);
}

.bar b {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  margin-top: 3px;
}

.bar span {
  color: var(--text-mute);
  text-align: right;
}

.floor-indicator {
  font-size: 13px;
  font-family: var(--mono);
  color: var(--text-mute);
}

.big-stat {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.1;
}

.win {
  color: var(--ok);
}

.lose {
  color: var(--bad);
}

canvas {
  width: 100%;
  height: 180px;
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding: 28px 0 40px;
  color: var(--text-mute);
  font-size: 13px;
}

/* ---------- mobile ---------- */

@media (max-width: 640px) {
  .nav-links {
    gap: 10px;
  }

  .nav-anchor {
    display: none;
  }

  .nav-links .btn,
  .nav-links .lang-select {
    padding: 6px 24px 6px 8px;
    font-size: 12px;
  }

  .hero {
    padding: 56px 0 40px;
  }

  .section {
    padding: 40px 0 8px;
  }
}