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

:root {
  --bg: #000;
  --fg: #fff;
  --dim: #888;
  --border: #333;
  --font: 'Courier New', Courier, monospace;
}

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  min-height: 100vh;
  font-size: 14px;
}

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

a:hover {
  text-decoration: underline;
}

/* ── Nav ── */
#nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: bold;
  letter-spacing: 0.2em;
}

#nav-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--dim);
}

#nav-user a {
  color: var(--fg);
}

#nav-user .nav-username {
  color: var(--fg);
  font-weight: bold;
}

/* ── Main ── */
#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ── Banner ── */
.banner {
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--dim);
  text-align: center;
}

.banner a {
  color: var(--fg);
  text-decoration: underline;
}

/* ── Game cards ── */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.game-card {
  border: 1px solid var(--border);
  padding: 1.25rem;
}

.game-card h2 {
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.game-card p {
  font-size: 0.8rem;
  color: var(--dim);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.game-card-actions {
  display: flex;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  border: 1px solid var(--fg);
  padding: 0.4rem 0.9rem;
  font-family: var(--font);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  background: var(--bg);
  color: var(--fg);
  text-decoration: none;
}

.btn:hover {
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
}

.btn-dim {
  border-color: var(--dim);
  color: var(--dim);
}

.btn-dim:hover {
  background: var(--dim);
  color: var(--bg);
}

/* ── Page heading ── */
.page-title {
  font-size: 1.3rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

/* ── Auth forms ── */
.auth-form {
  max-width: 380px;
}

.auth-form h1 {
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  color: var(--dim);
  margin-bottom: 0.3rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.form-group input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 0.5rem 0.6rem;
  outline: none;
}

.form-group input:focus {
  border-color: var(--fg);
}

.form-error {
  font-size: 0.8rem;
  color: #ccc;
  margin-top: 0.5rem;
  min-height: 1.2em;
}

.auth-divider {
  text-align: center;
  color: var(--dim);
  font-size: 0.75rem;
  margin: 1.2rem 0;
  letter-spacing: 0.1em;
}

.oauth-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.auth-switch {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: var(--dim);
}

.auth-switch a {
  color: var(--fg);
  text-decoration: underline;
}

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th {
  text-align: left;
  color: var(--dim);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
}

tr:hover td {
  background: #0a0a0a;
}

.rank-1 td { color: #fff; }

/* ── Profile ── */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.profile-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
}

.profile-avatar-placeholder {
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--dim);
}

.profile-username {
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

/* ── Score share page ── */
.score-display {
  font-size: 2.5rem;
  letter-spacing: 0.15em;
  margin: 1rem 0;
}

.score-meta {
  color: var(--dim);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.share-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Loading / error ── */
.loading {
  color: var(--dim);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.error-msg {
  color: #aaa;
  font-size: 0.85rem;
  padding: 1rem 0;
}

/* ── Embedded game player ── */
.play-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.75rem;
}

.play-title {
  font-size: 1rem;
  letter-spacing: 0.2em;
  font-weight: bold;
}

.play-frame-wrap {
  width: 100%;
  aspect-ratio: 1024 / 768;
  max-height: calc(100vh - 160px);
  margin: 0 auto;
  background: #000;
}

.play-frame {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #000;
}

/* ── Full-viewport play mode ── */
body.playing #app {
  position: fixed;
  top: var(--nav-h, 46px);
  left: 0;
  right: 0;
  bottom: 0;
  max-width: none;
  padding: 0.5rem 0.75rem 0.25rem;
  margin: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body.playing .play-header {
  flex-shrink: 0;
  margin-bottom: 0.4rem;
}

body.playing .play-frame-wrap {
  flex: 1 1 0;
  min-height: 0;
  width: 100%;
  aspect-ratio: unset;
  max-height: none;
  margin: 0;
}

body.playing .play-frame {
  width: 100%;
  height: 100%;
}

@media (max-width: 500px) {
  .games-grid {
    grid-template-columns: 1fr;
  }
  .share-buttons {
    flex-direction: column;
  }
  .play-header {
    flex-wrap: wrap;
  }
}