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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-2: #22263a;
  --border: #2e3249;
  --text: #e2e4ef;
  --text-muted: #7b82a8;
  --accent: #5b6af0;
  --accent-hover: #6e7cf5;
  --badge-dc: #ef4444;
  --badge-dc-bg: #2a1010;
  --badge-res: #22c55e;
  --badge-res-bg: #0e2416;
  --badge-mob: #f97316;
  --badge-mob-bg: #2a1800;
  --badge-anon: #a855f7;
  --badge-anon-bg: #1e0f2a;
  --badge-err: #94a3b8;
  --badge-err-bg: #1e2232;
  --radius: 10px;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

header {
  margin-bottom: 32px;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 4px;
}

/* Input section */
.input-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.textarea-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

label {
  font-weight: 600;
  color: var(--text);
}

.ip-counter {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.ip-counter.has-ips {
  color: var(--accent);
}

textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 12px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

textarea:focus {
  border-color: var(--accent);
}

textarea::placeholder {
  color: var(--text-muted);
}

.input-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

/* Buttons */
.btn {
  padding: 8px 18px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:not(:disabled):hover {
  background: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-sm:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* Loading */
.loading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 32px 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

/* Results */
.results-section {
  margin-top: 28px;
}

.results-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.results-count {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

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

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 14px;
}

/* Cards */
.ip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color 0.15s;
}

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

.ip-card.error {
  border-color: #ef444433;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 14px;
}

.card-ip {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  word-break: break-all;
}

.badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-DATACENTER      { background: var(--badge-dc-bg);   color: var(--badge-dc);   }
.badge-RESIDENTIAL     { background: var(--badge-res-bg);  color: var(--badge-res);  }
.badge-MOBILE          { background: var(--badge-mob-bg);  color: var(--badge-mob);  }
.badge-ANONYMOUS_PROXY { background: var(--badge-anon-bg); color: var(--badge-anon); }
.badge-error           { background: var(--badge-err-bg);  color: var(--badge-err);  }

.card-fields {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-field {
  display: flex;
  gap: 8px;
  font-size: 13px;
}

.field-label {
  color: var(--text-muted);
  width: 72px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  padding-top: 1px;
}

.field-value {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-word;
}

.field-value.null-val {
  color: var(--text-muted);
  font-style: italic;
}

/* Whois details */
details {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

summary {
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
}

summary:hover { color: var(--text); }

.whois-raw {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 8px;
  max-height: 200px;
  overflow-y: auto;
  background: var(--bg);
  border-radius: 4px;
  padding: 8px;
}

.hidden { display: none !important; }