@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #121212;
  --bg-card: #18181b;
  --bg-input: #1a1a1a;
  --bg-hover: #27272a;

  --text-main: #ffffff;
  --text-muted: #a1a1aa;
  --text-dark: #52525b;

  --border: #27272a;
  --border-focus: #3f3f46;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 4px;
  --radius: 8px;
  --radius-pill: 99px;

  --transition: 150ms ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-muted);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
}

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

a:hover {
  color: var(--text-main);
}

code {
  font-family: var(--font-mono);
  font-size: 12px;
}

ul {
  list-style: none;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

/* ── Typography ──────────────────────────────────────────────────────────── */
h1,
h2,
h3,
h4 {
  color: var(--text-main);
  font-weight: 500;
  font-family: var(--font-sans);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-muted);
}

strong {
  color: var(--text-main);
  font-weight: 500;
}

/* ── Buttons & Pills ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  transition: all var(--transition);
}

.btn:hover {
  background: var(--bg-hover);
  color: var(--text-main);
  border-color: var(--border-focus);
}

.key-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-hover);
  border: 1px solid var(--border-focus);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 10px;
  color: var(--text-muted);
}

/* ── Nav ─────────────────────────────────────────────────────────────────── */
.nav {
  padding: 32px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
}

/* ── Layout & Sections ───────────────────────────────────────────────────── */
.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section-header {
  margin-bottom: 40px;
}

.section-title {
  font-size: 24px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.section-desc {
  font-size: 14px;
  color: var(--text-dark);
}

/* Hero / Login */
.hero {
  text-align: center;
  padding: 120px 0;
  border-bottom: 1px solid var(--border);
}

.hero-logo-big {
  font-size: 48px;
  font-weight: 600;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--text-main);
  line-height: 1;
}

.hero-desc {
  margin: 0 auto 32px;
  color: var(--text-muted);
  font-size: 13px;
}

.hero-desc strong {
  color: var(--text-main);
}

.login-box {
  max-width: 320px;
  margin: 0 auto;
}

.login-actions {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* Grid Components */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.card h3 {
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-main);
}

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

.card code {
  display: block;
  background: var(--bg-card);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-top: 16px;
  color: var(--text-muted);
}

/* Letter Section */
.letter-wrapper {
  padding: 3px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
}

.letter-inner {
  padding: 60px;
  border: 1px solid var(--border);
  background: var(--bg);
  background-image:
    linear-gradient(var(--bg-card) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-card) 1px, transparent 1px);
  background-size: 20px 20px;
  position: relative;
}

.letter-tag {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: block;
}

.letter-title {
  font-size: 28px;
  color: #3b82f6;
  margin-bottom: 32px;
  font-family: var(--font-sans);
  font-weight: 400;
}

.letter-body {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 650px;
}

.letter-body p {
  margin-bottom: 24px;
}

.letter-seal {
  position: absolute;
  top: 60px;
  right: 60px;
  width: 100px;
  height: 100px;
  border: 2px dashed var(--border-focus);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transform: rotate(-15deg);
  opacity: 0.5;
}

.letter-footer {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.letter-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  overflow: hidden;
  border: 1px solid var(--border);
}

.letter-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.letter-author-name {
  color: var(--text-main);
  font-weight: 500;
  font-size: 14px;
}

.letter-author-sub {
  color: var(--text-dark);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Leaderboard Table completely minimal */
.table-wrapper {
  overflow-x: auto;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: var(--font-mono);
}

th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  font-weight: 400;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid transparent;
  color: var(--text-dark);
}

tr:hover td {
  color: var(--text-main);
}

.td-main {
  color: var(--text-muted);
  white-space: nowrap;
}

/* Inputs & Forms */
.input-group {
  position: relative;
  margin-bottom: 12px;
}

.input-group input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px 10px 36px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  outline: none;
  transition: border var(--transition);
}

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

.input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dark);
  font-size: 14px;
}

/* Footer */
.footer {
  padding: 40px 0;
  font-size: 12px;
  color: var(--text-dark);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 16px;
}

/* Dashboard overrides */
.dash-nav {
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.dash-header {
  margin: 40px 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.dash-header h1 {
  font-size: 24px;
  font-family: var(--font-mono);
  font-weight: 500;
}

.d-card {
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.d-val {
  font-size: 24px;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.d-label {
  font-size: 12px;
  color: var(--text-dark);
  text-transform: uppercase;
}

/* Code Blocks */
pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  color: var(--text-muted);
}

.code-tabs {
  display: flex;
  gap: 16px;
  margin-bottom: -16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.code-tab {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dark);
  cursor: pointer;
}

.code-tab.active {
  color: var(--text-main);
}

.nav-user-pill {
  display: flex;
  align-items: center;
  padding: 4px 12px 4px 4px;
  background: var(--bg-hover);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-main);
  transition: all var(--transition);
}

.panel-drag-ghost {
  opacity: 0.4;
  border: 1px dashed var(--border-focus) !important;
}

.sortable-fallback {
  opacity: 0.9 !important;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4) !important;
  pointer-events: none !important;
  z-index: 9999 !important;
}

.panel-drag-handle:active {
  cursor: grabbing;
}

.nav-user-pill:hover {
  border-color: var(--text-muted);
}