/* Tool 1: IP Addressing & Subnet Dashboard CSS */
.tool-page-wrapper {
  padding: 40px 0 80px;
}

.tool-container-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(15, 39, 77, 0.06);
  padding: 36px 32px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .tool-container-card {
  border-color: var(--border-dark);
}

/* Tabs */
.tool-tabs-nav {
  display: flex;
  gap: 12px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 30px;
  padding-bottom: 12px;
  flex-wrap: wrap;
}
[data-theme="dark"] .tool-tabs-nav {
  border-bottom-color: var(--border-dark);
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.25s ease;
}
[data-theme="dark"] .tab-btn {
  border-color: var(--border-dark);
  color: #94a3b8;
}
.tab-btn:hover {
  color: var(--blue-primary);
  border-color: var(--blue-primary);
}
.tab-btn.active {
  background: var(--blue-primary);
  color: #fff;
  border-color: var(--blue-primary);
  box-shadow: 0 4px 14px rgba(25, 118, 210, 0.35);
}

.tab-pane {
  display: none;
  animation: fadeInPane 0.35s ease;
}
.tab-pane.active {
  display: block;
}
@keyframes fadeInPane {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Form Layout */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.input-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
}
[data-theme="dark"] .input-label {
  color: #f1f5f9;
}
.input-field {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  direction: ltr;
  text-align: left;
  transition: all 0.25s;
}
[data-theme="dark"] .input-field {
  border-color: var(--border-dark);
  background: #081120;
}
.input-field:focus {
  outline: none;
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px var(--blue-light);
}

.quick-presets {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.preset-btn {
  padding: 4px 10px;
  font-size: 12px;
  font-family: var(--mono);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}
[data-theme="dark"] .preset-btn {
  border-color: var(--border-dark);
}
.preset-btn:hover {
  background: var(--blue-light);
  color: var(--blue-primary);
  border-color: var(--blue-primary);
}

.actions-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* Results Display */
.results-box {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: none;
}
[data-theme="dark"] .results-box {
  background: rgba(15, 23, 42, 0.6);
  border-color: var(--border-dark);
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border);
}
[data-theme="dark"] .results-header {
  border-bottom-color: var(--border-dark);
}
.results-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
[data-theme="dark"] .results-title {
  color: #fff;
}
.ip-version-badge {
  font-size: 12px;
  font-family: var(--mono);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
  background: rgba(0, 169, 202, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(0, 169, 202, 0.3);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
[data-theme="dark"] .result-item {
  border-color: var(--border-dark);
}
.result-label {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
}
.result-value {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  direction: ltr;
  text-align: left;
  word-break: break-all;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
[data-theme="dark"] .result-value {
  color: #f1f5f9;
}
.copy-inline-btn {
  background: none;
  border: none;
  color: var(--cyan);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: transform 0.15s;
}
.copy-inline-btn:hover {
  transform: scale(1.15);
}

/* Binary Breakdown Table */
.binary-breakdown {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
[data-theme="dark"] .binary-breakdown {
  border-top-color: var(--border-dark);
}
.binary-text {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  direction: ltr;
  text-align: left;
  color: var(--blue-primary);
  line-height: 1.8;
  word-break: break-all;
}
[data-theme="dark"] .binary-text {
  border-color: var(--border-dark);
  color: var(--cyan-bright);
}

/* Subnet Range Data Table (subnetcalculator style) */
.subnet-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: right;
  direction: rtl;
}
.subnet-data-table th, 
.subnet-data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
[data-theme="dark"] .subnet-data-table th,
[data-theme="dark"] .subnet-data-table td {
  border-bottom-color: var(--border-dark);
}
.subnet-data-table th {
  background: var(--bg);
  color: var(--navy);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 1;
}
[data-theme="dark"] .subnet-data-table th {
  background: #0f172a;
  color: #f1f5f9;
}
.subnet-data-table td {
  font-family: var(--mono);
  direction: ltr;
  text-align: left;
  color: var(--text);
}
.subnet-data-table tr:hover td {
  background: rgba(0, 169, 202, 0.06);
}
.subnet-data-table tr.active-target-subnet td {
  background: rgba(25, 118, 210, 0.12);
  font-weight: 700;
  color: var(--blue-primary);
}

/* Select dropdown style */
.select-field {
  cursor: pointer;
  appearance: auto;
}

/* Error Banner */
.tool-alert {
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  margin-top: 18px;
  display: none;
}
.tool-alert.error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Guide Section */
.tool-guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: 0 4px 20px rgba(15, 39, 77, 0.04);
}
[data-theme="dark"] .tool-guide-card {
  border-color: var(--border-dark);
}
.tool-guide-card h2 {
  font-size: 20px;
  margin-bottom: 16px;
}
.tool-guide-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.9;
  text-align: justify;
  margin-bottom: 14px;
}
.tool-guide-card p:last-child {
  margin-bottom: 0;
}