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

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --danger: #f85149;
  --success: #3fb950;
  --warning: #d29922;
  --radius: 6px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

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

/* Nav */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.nav-brand:hover { color: var(--accent); text-decoration: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
}
.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.btn-new {
  background: var(--accent) !important;
  color: var(--bg) !important;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius);
  font-weight: 600;
}
.btn-new:hover { background: var(--accent-hover) !important; }

.btn-register {
  border: 1px solid var(--border);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius);
  color: var(--text) !important;
}

.btn-link {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font);
  padding: 0;
}
.btn-link:hover { color: var(--text); }

/* Main */
main {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font);
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  background: var(--surface);
  color: var(--text);
}
.btn:hover { background: #21262d; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #000; }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.25rem 0.7rem; font-size: 0.8rem; }
.btn-full { width: 100%; justify-content: center; padding: 0.7rem; }

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.2rem;
  font-size: 0.9rem;
}
.alert-error { background: rgba(248, 81, 73, 0.15); border: 1px solid var(--danger); color: #ffa198; }

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}
.hero h1 { font-size: 2.5rem; margin-bottom: 0.75rem; }
.hero p { color: var(--text-muted); margin-bottom: 1.5rem; font-size: 1.1rem; }

/* Paste list */
.paste-list h2 { margin-bottom: 1rem; font-size: 1.1rem; color: var(--text-muted); }
.empty { color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 500;
}
tbody td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface); }

.lang-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
  background: #21262d;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--mono);
}

.visibility-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
}
.visibility-public { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.visibility-private { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.visibility-unlisted { background: rgba(210, 153, 34, 0.15); color: var(--warning); }

/* Forms */
.form-page { max-width: 900px; }
.form-page h1 { margin-bottom: 1.5rem; }
.paste-form { display: flex; flex-direction: column; gap: 1.2rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.2rem; }

label { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); }
label .required { color: var(--danger); }
small { font-size: 0.78rem; color: var(--text-muted); }

input[type="text"], input[type="email"], input[type="password"], select, textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 0.55rem 0.75rem;
  transition: border-color 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}
textarea {
  font-family: var(--mono);
  font-size: 0.88rem;
  resize: vertical;
  min-height: 300px;
  line-height: 1.5;
  tab-size: 2;
}
select option { background: var(--surface); }

/* Paste view */
.paste-view { max-width: 100%; }
.paste-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.paste-meta h1 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.paste-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.paste-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
.expiry { color: var(--warning); }

.paste-content pre {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow-x: auto;
}
.paste-content pre code {
  display: block;
  padding: 1.25rem !important;
  font-size: 0.88rem !important;
  line-height: 1.6 !important;
  font-family: var(--mono) !important;
  background: transparent !important;
}

/* Auth pages */
.auth-page {
  display: flex;
  justify-content: center;
  padding-top: 3rem;
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  width: 100%;
  max-width: 420px;
}
.auth-card h1 { margin-bottom: 1.5rem; font-size: 1.4rem; }
.auth-card form { display: flex; flex-direction: column; gap: 1rem; }
.auth-switch { margin-top: 1.2rem; text-align: center; font-size: 0.9rem; color: var(--text-muted); }

/* Dashboard */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.dashboard-table td { vertical-align: middle; }
.dashboard-table .paste-actions { display: flex; gap: 0.4rem; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}
.empty-state p { margin-bottom: 1rem; }

/* Error page */
.error-page {
  text-align: center;
  padding: 4rem 0;
}
.error-page h1 { font-size: 2rem; margin-bottom: 0.75rem; }
.error-page p { color: var(--text-muted); margin-bottom: 1.5rem; }

/* Notes */
.note-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Dashboard sections */
.dashboard-section { margin-bottom: 2.5rem; }
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.section-header h2 { font-size: 1.1rem; color: var(--text-muted); }

.form-actions { display: flex; gap: 0.75rem; align-items: center; }

.btn-new-notes {
  background: #2d333b !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
}
.btn-new-notes:hover { background: #373e47 !important; }

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 640px) {
  nav { padding: 0 1rem; }
  main { padding: 1.5rem 1rem; }
  .hero h1 { font-size: 1.8rem; }
  .paste-header { flex-direction: column; }
  .nav-links { gap: 0.5rem; font-size: 0.8rem; }
  table { font-size: 0.8rem; }
}