/*!
 * Subnet Calculator (CIDR) — module CSS (e2z-sbc- prefix).
 * Color scheme (spec): Primary #18181B (terminal black), Secondary #27272A,
 * Accent #4ADE80 (matrix green), BG #FAFAFA.
 * Scope: .e2z-tool-subnet-calculator-cidr (framework shortcode wrapper).
 */

.e2z-tool-subnet-calculator-cidr,
.e2z-tool-subnet-calculator-cidr *,
.e2z-tool-subnet-calculator-cidr *::before,
.e2z-tool-subnet-calculator-cidr *::after {
	box-sizing: border-box;
}

.e2z-tool-subnet-calculator-cidr .e2z-sbc-container {
	font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
	line-height: 1.5;
	color: #18181B;
	width: 100%;
	margin: 0 auto;
	background: #FAFAFA;
	border-radius: 12px;
	box-shadow: 0 4px 20px rgba(24, 24, 27, 0.12);
	overflow: hidden;
}

/* Monospace technical fields (Section F) */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-mono,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bits,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat-value,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table td {
	font-family: 'SF Mono', 'Courier New', ui-monospace, Menlo, Consolas, monospace;
}

/* Header */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-header {
	padding: 24px 16px;
	background: linear-gradient(135deg, #27272A, #18181B);
	color: #fff;
	text-align: center;
	border-bottom: 3px solid #4ADE80;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-title {
	font-size: 1.8rem;
	font-weight: 700;
	margin: 0 0 4px;
	color: #4ADE80;
	font-family: 'SF Mono', 'Courier New', ui-monospace, monospace;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-subtitle {
	font-size: 0.9rem;
	opacity: 0.8;
	margin: 0;
}

/* Privacy */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-privacy {
	margin: 0;
	padding: 9px 16px;
	background: #F0FDF4;
	color: #166534;
	font-size: 0.82rem;
	font-weight: 600;
	text-align: center;
	border-bottom: 1px solid #BBF7D0;
}

/* Layout */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-main-grid {
	display: flex;
	flex-direction: column;
	gap: 20px;
	padding: 16px;
}
@media (min-width: 1024px) {
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-main-grid {
		flex-direction: row;
		align-items: flex-start;
	}
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-inputs-panel { flex: 2; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-results-panel { flex: 3; min-width: 380px; }
}

.e2z-tool-subnet-calculator-cidr .e2z-sbc-inputs-panel,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-results-panel {
	background: #FFFFFF;
	border-radius: 12px;
	padding: 20px;
	border: 1px solid #E4E4E7;
	box-shadow: 0 2px 8px rgba(24, 24, 27, 0.05);
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-section-title {
	font-size: 1.2rem;
	font-weight: 600;
	color: #18181B;
	margin: 0 0 12px;
	padding-bottom: 8px;
	border-bottom: 2px solid #DCFCE7;
}

/* Tabs */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-tabs {
	display: flex;
	gap: 4px;
	margin-bottom: 16px;
	background: #F4F4F5;
	padding: 4px;
	border-radius: 8px;
	flex-wrap: wrap;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-tab {
	flex: 1;
	min-width: 74px;
	min-height: 44px;
	padding: 10px 6px;
	border: none;
	border-radius: 6px;
	background: transparent;
	color: #52525B;
	font-family: inherit;
	font-size: 0.85rem;
	font-weight: 600;
	cursor: pointer;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-tab-active {
	background: #18181B;
	color: #4ADE80;
}

/* Fields */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-row {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 12px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-field {
	flex: 1;
	min-width: 130px;
	display: flex;
	flex-direction: column;
	margin-bottom: 12px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-row .e2z-sbc-field { margin-bottom: 0; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-label {
	font-size: 0.85rem;
	font-weight: 500;
	color: #3F3F46;
	margin-bottom: 4px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-hint {
	font-size: 0.73rem;
	color: #A1A1AA;
	margin-top: 6px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-input {
	width: 100%;
	min-height: 44px;
	padding: 10px 12px;
	border: 1px solid #D4D4D8;
	border-radius: 6px;
	font-size: 0.95rem;
	background: #fff;
	color: #18181B;
}
.e2z-tool-subnet-calculator-cidr textarea.e2z-sbc-input {
	min-height: 130px;
	resize: vertical;
	line-height: 1.6;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-input:focus {
	outline: none;
	border-color: #4ADE80;
	box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.25);
}

/* VLSM rows */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-vlsm-row {
	display: flex;
	gap: 8px;
	align-items: flex-end;
	margin-bottom: 8px;
	padding: 8px;
	background: #FAFAFA;
	border: 1px solid #E4E4E7;
	border-left: 3px solid #4ADE80;
	border-radius: 8px;
	flex-wrap: wrap;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-vlsm-row .e2z-sbc-field { min-width: 105px; margin-bottom: 0; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-row-del {
	min-height: 44px;
	min-width: 44px;
	border: 1px solid #FCA5A5;
	border-radius: 6px;
	background: #FEF2F2;
	color: #DC2626;
	font-size: 0.9rem;
	font-weight: 700;
	cursor: pointer;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-row-del:hover { background: #DC2626; color: #fff; }

/* Buttons */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-add-row-btn {
	min-height: 44px;
	padding: 10px 18px;
	border: 1px dashed #16A34A;
	border-radius: 8px;
	background: #fff;
	color: #16A34A;
	font-family: inherit;
	font-size: 0.88rem;
	font-weight: 600;
	cursor: pointer;
	margin-bottom: 12px;
	display: inline-flex;
	align-items: center;
	gap: 6px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-add-row-btn:hover { background: #F0FDF4; }

.e2z-tool-subnet-calculator-cidr .e2z-sbc-calc-btn,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-rev-btn,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-vlsm-btn,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-supernet-btn {
	width: 100%;
	min-height: 48px;
	padding: 13px;
	border: none;
	border-radius: 8px;
	background: #18181B;
	color: #4ADE80;
	font-family: inherit;
	font-size: 1rem;
	font-weight: 700;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	transition: filter 0.15s ease;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-calc-btn:hover,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-rev-btn:hover,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-vlsm-btn:hover,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-supernet-btn:hover { filter: brightness(1.8); }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-calc-btn:focus-visible,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-vlsm-btn:focus-visible {
	outline: none;
	box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.55);
}

/* Results */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-empty-state {
	padding: 24px;
	text-align: center;
	color: #71717A;
	background: #FAFAFA;
	border-radius: 8px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-hero {
	border-radius: 10px;
	padding: 16px;
	text-align: center;
	margin-bottom: 14px;
	background: #18181B;
	border: 1px solid #27272A;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-hero-value {
	font-size: 1.9rem;
	font-weight: 800;
	margin: 4px 0;
	line-height: 1.15;
	color: #4ADE80;
	font-family: 'SF Mono', 'Courier New', ui-monospace, monospace;
	word-break: break-all;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-hero-label {
	font-size: 0.83rem;
	font-weight: 600;
	color: #A1A1AA;
	margin: 0;
}

.e2z-tool-subnet-calculator-cidr .e2z-sbc-result-block {
	background: #FAFAFA;
	border: 1px solid #E4E4E7;
	border-radius: 10px;
	padding: 14px;
	margin-bottom: 12px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-result-block h3 {
	font-size: 1rem;
	color: #18181B;
	margin: 0 0 10px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(135px, 1fr));
	gap: 10px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat {
	background: #fff;
	border: 1px solid #E4E4E7;
	border-radius: 8px;
	padding: 10px;
	text-align: center;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat-label {
	font-size: 0.72rem;
	font-weight: 600;
	color: #71717A;
	margin: 0 0 3px;
	font-family: 'Inter', system-ui, sans-serif;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat-value {
	font-size: 0.96rem;
	font-weight: 700;
	color: #18181B;
	margin: 0;
	word-break: break-all;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-stat-green .e2z-sbc-stat-value { color: #16A34A; }

/* Binary visualization */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-binary {
	display: flex;
	gap: 6px;
	flex-wrap: wrap;
	justify-content: center;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bin-octet {
	flex: 1;
	min-width: 82px;
	background: #18181B;
	border-radius: 8px;
	padding: 8px 4px;
	text-align: center;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bin-dec {
	font-size: 0.85rem;
	font-weight: 800;
	color: #A1A1AA;
	margin: 0 0 4px;
	font-family: 'SF Mono', 'Courier New', monospace;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bits {
	font-size: 0.8rem;
	letter-spacing: 1px;
	word-break: break-all;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bit-net {
	background: #16A34A;
	color: #fff;
	font-weight: 700;
	border-radius: 2px;
	padding: 1px 2px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-bit-host {
	background: #3F3F46;
	color: #E4E4E7;
	border-radius: 2px;
	padding: 1px 2px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-legend {
	font-size: 0.75rem;
	color: #71717A;
	text-align: center;
	margin: 10px 0 0;
}

/* Table */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table-wrap { width: 100%; overflow-x: auto; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.8rem;
	background: #fff;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table th {
	background: #18181B;
	color: #4ADE80;
	padding: 8px;
	text-align: center;
	font-weight: 600;
	white-space: nowrap;
	font-family: 'Inter', system-ui, sans-serif;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table td {
	padding: 7px 8px;
	text-align: center;
	border-bottom: 1px solid #F4F4F5;
	white-space: nowrap;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-table tbody tr:nth-child(odd) { background: #FAFAFA; }

.e2z-tool-subnet-calculator-cidr .e2z-sbc-note {
	font-size: 0.84rem;
	margin: 8px 0 0;
	padding: 9px 11px;
	border-radius: 6px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-note-info { background: #F0FDF4; color: #166534; border-left: 3px solid #4ADE80; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-note-warn { background: #FFFBEB; color: #92400E; border-left: 3px solid #F59E0B; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-note-error { background: #FEF2F2; color: #991B1B; border-left: 3px solid #DC2626; }

/* Export */
.e2z-tool-subnet-calculator-cidr .e2z-sbc-export-row {
	display: flex;
	gap: 10px;
	flex-wrap: wrap;
	margin-top: 12px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-csv-btn,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-print-btn,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-copy-btn {
	flex: 1;
	min-height: 44px;
	padding: 11px;
	border: none;
	border-radius: 8px;
	color: #fff;
	font-family: inherit;
	font-size: 0.88rem;
	font-weight: 600;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
}
.e2z-tool-subnet-calculator-cidr .e2z-sbc-csv-btn { background: #16A34A; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-print-btn { background: #27272A; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-copy-btn { background: #18181B; }
.e2z-tool-subnet-calculator-cidr .e2z-sbc-csv-btn:hover,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-print-btn:hover,
.e2z-tool-subnet-calculator-cidr .e2z-sbc-copy-btn:hover { filter: brightness(1.5); }

.e2z-tool-subnet-calculator-cidr .e2z-sbc-disclaimer {
	font-size: 0.75rem;
	color: #A1A1AA;
	margin: 12px 0 0;
	line-height: 1.45;
}

.e2z-tool-subnet-calculator-cidr .e2z-sbc-hidden { display: none !important; }

/* Responsive */
@media (max-width: 480px) {
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-title { font-size: 1.35rem; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-inputs-panel,
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-results-panel { padding: 14px; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-bin-octet { min-width: 74px; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-bits { font-size: 0.72rem; letter-spacing: 0; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-hero-value { font-size: 1.5rem; }
}
@media (max-width: 360px) {
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-header { padding: 16px 10px; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-title { font-size: 1.15rem; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-bin-octet { min-width: 100%; }
	.e2z-tool-subnet-calculator-cidr .e2z-sbc-field { min-width: 100%; }
}