/* =====================================================
   CIDRLY — Custom Styles
   ===================================================== */

/* ===== CSS VARIABLES ===== */
[data-bs-theme="dark"] {
  --bg-main: #0d1117;
  --bg-card: #161b22;
  --border-color: #30363d;
  --accent: #2f81f7;
  --accent-rgb: 47, 129, 247;
  --text-muted: #8b949e;
  --text-main: #e6edf3;
  --bit-network: #2f81f7;
  --bit-host-1: #58a6ff;
  --bit-host-0: #30363d;
}
[data-bs-theme="light"] {
  --bg-main: #f6f8fa;
  --bg-card: #ffffff;
  --border-color: #d0d7de;
  --accent: #0969da;
  --accent-rgb: 9, 105, 218;
  --text-muted: #6e7781;
  --text-main: #1f2328;
  --bit-network: #0969da;
  --bit-host-1: #0550ae;
  --bit-host-0: #d0d7de;
}

/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 14px; }
body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-wrapper {
  flex: 1;
}
.font-mono { font-family: 'Roboto Mono', monospace !important; }

/* ===== PAGE INTRO (H1 SEO) ===== */
.page-intro {
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 0.6rem 0;
}
.page-intro h1 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 0.15rem 0;
  letter-spacing: -0.01em;
}
.page-intro p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== SEO SECTION ===== */
.seo-h2 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}
.seo-h3 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
  margin-top: 1rem;
}
.seo-h3:first-child { margin-top: 0; }
.seo-section p, .seo-section li {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.seo-section ul { padding-left: 1.2rem; }
.seo-section code {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.08);
  padding: 1px 4px;
  border-radius: 3px;
}
.seo-table {
  font-size: 0.78rem;
  color: var(--text-main);
}
.seo-table th {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}
.seo-table td code {
  font-size: 0.75rem;
}

/* ===== NAVBAR ===== */
.navbar {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-card) !important;
}
.navbar-brand {
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent) !important;
}
.navbar-brand i { font-size: 1.3rem; }
.nav-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 20px;
  background: rgba(var(--accent-rgb), 0.15);
  color: var(--accent);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  font-family: 'Roboto Mono', monospace;
  align-self: center;
}
.navbar-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px 10px;
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: background 0.15s, border-color 0.15s;
}
.navbar-btn:hover {
  background: rgba(var(--accent-rgb), 0.1);
  border-color: var(--accent);
  color: var(--accent);
}
.navbar-btn i { font-size: 1rem; }

/* ===== CARDS ===== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 1rem;
}
.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  font-weight: 500;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.card-header i { font-size: 1rem; color: var(--accent); }
.card-body { padding: 1rem; }

/* ===== FORM ===== */
.form-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  font-weight: 500;
}
.form-control, .form-select {
  background-color: var(--bg-main);
  border-color: var(--border-color);
  color: var(--text-main);
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
}
.form-control:focus, .form-select:focus {
  background-color: var(--bg-main);
  border-color: var(--accent);
  color: var(--text-main);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}
.form-control::placeholder { color: var(--text-muted); opacity: 0.7; }

/* ===== QUICK CIDR BUTTONS ===== */
#quickCidrButtons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}
.quick-cidr-btn {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: none;
  color: var(--accent);
  cursor: pointer;
  transition: background 0.12s;
}
.quick-cidr-btn:hover {
  background: rgba(var(--accent-rgb), 0.12);
  border-color: var(--accent);
}

/* ===== RESULTS ===== */
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
}
.result-row:last-child { border-bottom: none; }
.result-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  font-weight: 500;
}
.result-value {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-main);
}
.result-value.accent { color: var(--accent); font-weight: 500; }
.copy-btn {
  background: none;
  border: none;
  padding: 2px 4px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
  font-size: 0.9rem;
  line-height: 1;
}
.result-row:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--accent); }

/* ===== PROGRESS BAR ===== */
.ip-position-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* ===== BINARY VISUALIZATION ===== */
.binary-row {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 0.4rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}
.binary-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.07em;
  width: 52px;
  min-width: 52px;
  flex-shrink: 0;
}
.bit-group {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}
.bit-sep {
  width: 4px;
  flex-shrink: 0;
}
.bit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.65rem;
  border-radius: 2px;
  border: 1px solid transparent;
}
.bit-net {
  background: rgba(var(--accent-rgb), 0.2);
  color: var(--bit-network);
  border-color: rgba(var(--accent-rgb), 0.4);
}
.bit-host-1 {
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--bit-host-1);
  border-color: rgba(var(--accent-rgb), 0.2);
}
.bit-host-0 {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--bit-host-0);
}
.binary-legend {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 4px;
  vertical-align: middle;
}

/* ===== TABS ===== */
.nav-tabs {
  border-bottom: 1px solid var(--border-color);
  gap: 0;
}
.nav-tabs .nav-link {
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  font-size: 0.8rem;
  padding: 0.5rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.nav-tabs .nav-link:hover { color: var(--text-main); }
.nav-tabs .nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: none;
}
.nav-tabs .nav-link i { font-size: 0.95rem; }

/* ===== VLSM TABLE ===== */
.table {
  font-size: 0.82rem;
  color: var(--text-main);
}
.table > :not(caption) > * > * {
  background-color: transparent;
  color: var(--text-main);
}
.table th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 500;
}
.table td { font-family: 'Roboto Mono', monospace; }
.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: rgba(128,128,128,0.04);
}

/* ===== ADSENSE SLOTS ===== */
.ad-slot {
  display: block;
  width: 100%;
  overflow: hidden;
}
.ad-slot ins { display: block !important; }
.ad-slot-top    { margin-bottom: 1.5rem; min-height: 50px; }
.ad-slot-sidebar { min-height: 100px; }
.ad-slot-mid    { margin: 1.5rem 0; min-height: 50px; }

/* ===== MISC ===== */
.section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 700;
}
.badge-class {
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: 20px;
  font-family: 'Roboto Mono', monospace;
}
.share-btn {
  font-size: 0.8rem;
  padding: 4px 12px;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
footer {
  border-top: 1px solid var(--border-color);
  padding: 1.25rem 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--bg-card);
  text-align: center;
  margin-top: auto;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }
.seo-section h6 { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; }
.seo-section p, .seo-section ul { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0; }
.seo-section ul { padding-left: 1.2rem; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ===== IPv6 SMALL BITS ===== */
.bit-sm {
  width: 11px;
  height: 11px;
  font-size: 0.5rem;
}

/* ===== MOBILE ===== */
@media (max-width: 991px) {
  .binary-row { overflow-x: auto; }
  .bit { width: 14px; height: 14px; font-size: 0.6rem; }
  .bit-sm { width: 10px; height: 10px; font-size: 0.48rem; }
}
@media (max-width: 575px) {
  .result-row { flex-wrap: wrap; gap: 0.2rem; }
  html { font-size: 13px; }
}