@layer base,tokens,layout,components,utilities;@layer tokens{:root,:root[data-theme=light]{color-scheme:light;--font-sans: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "Cascadia Code", "Fira Code", Consolas, monospace;--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-pill: 999px;--ease-standard: cubic-bezier(.2, .8, .2, 1);--dur-fast: .1s;--dur-mid: .14s;--dur-slow: .18s;--neutral-0: oklch(100% 0 0);--neutral-50: oklch(98.5% 0 0);--neutral-100: oklch(96.6% 0 0);--neutral-200: oklch(92.8% 0 0);--neutral-300: oklch(86.8% 0 0);--neutral-400: oklch(74% 0 0);--neutral-500: oklch(62% 0 0);--neutral-600: oklch(50% 0 0);--neutral-700: oklch(39% 0 0);--neutral-800: oklch(30% 0 0);--neutral-900: oklch(22% 0 0);--neutral-950: oklch(16% 0 0);--primary-50: oklch(97.2% .02 265);--primary-100: oklch(93.8% .04 265);--primary-200: oklch(88.4% .07 265);--primary-300: oklch(80.2% .11 265);--primary-400: oklch(72.1% .15 265);--primary-500: oklch(63.6% .2 265);--primary-600: oklch(56.1% .19 265);--primary-700: oklch(48.8% .16 265);--primary-800: oklch(41.8% .13 265);--primary-900: oklch(34.8% .1 265);--success-500: oklch(69% .16 150);--warning-500: oklch(78% .16 85);--error-500: oklch(64% .2 28);--info-500: oklch(65% .14 240);--color-bg: var(--neutral-50);--color-bg-elevated: var(--neutral-0);--color-bg-subtle: var(--neutral-100);--color-border: var(--neutral-200);--color-border-strong: var(--neutral-300);--color-text: var(--neutral-900);--color-text-muted: var(--neutral-600);--color-text-soft: var(--neutral-500);--color-link: var(--primary-600);--color-focus: var(--primary-500);--color-tab-active-bg: var(--neutral-0);--color-tab-active-text: var(--neutral-900);--color-tab-idle-text: var(--neutral-600);--color-badge-bg: var(--neutral-100);--color-badge-text: var(--neutral-700);--color-network-bits: oklch(73% .14 250);--color-host-bits: oklch(73% .13 30);--shadow-sm: 0 1px 2px oklch(0% 0 0 / .07), 0 0 0 1px oklch(0% 0 0 / .04);--shadow-md: 0 6px 16px oklch(0% 0 0 / .08), 0 1px 2px oklch(0% 0 0 / .06), 0 0 0 1px oklch(0% 0 0 / .04);--shadow-lg: 0 14px 28px oklch(0% 0 0 / .1), 0 2px 8px oklch(0% 0 0 / .08), 0 0 0 1px oklch(0% 0 0 / .05)}:root[data-theme=dark]{color-scheme:dark;--color-bg: oklch(18% 0 0);--color-bg-elevated: oklch(23% 0 0);--color-bg-subtle: oklch(26% 0 0);--color-border: oklch(33% 0 0);--color-border-strong: oklch(41% 0 0);--color-text: oklch(95% 0 0);--color-text-muted: oklch(77% 0 0);--color-text-soft: oklch(68% 0 0);--color-link: oklch(78% .15 265);--color-focus: oklch(72% .2 265);--color-tab-active-bg: oklch(30% 0 0);--color-tab-active-text: oklch(98% 0 0);--color-tab-idle-text: oklch(75% 0 0);--color-badge-bg: oklch(30% 0 0);--color-badge-text: oklch(88% 0 0);--color-network-bits: oklch(78% .14 250);--color-host-bits: oklch(78% .13 30);--shadow-sm: 0 1px 2px oklch(0% 0 0 / .45), 0 0 0 1px oklch(100% 0 0 / .04);--shadow-md: 0 6px 16px oklch(0% 0 0 / .42), 0 1px 2px oklch(0% 0 0 / .36), 0 0 0 1px oklch(100% 0 0 / .05);--shadow-lg: 0 14px 28px oklch(0% 0 0 / .46), 0 2px 8px oklch(0% 0 0 / .4), 0 0 0 1px oklch(100% 0 0 / .06)}@media(prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark;--color-bg: oklch(18% 0 0);--color-bg-elevated: oklch(23% 0 0);--color-bg-subtle: oklch(26% 0 0);--color-border: oklch(33% 0 0);--color-border-strong: oklch(41% 0 0);--color-text: oklch(95% 0 0);--color-text-muted: oklch(77% 0 0);--color-text-soft: oklch(68% 0 0);--color-link: oklch(78% .15 265);--color-focus: oklch(72% .2 265);--color-tab-active-bg: oklch(30% 0 0);--color-tab-active-text: oklch(98% 0 0);--color-tab-idle-text: oklch(75% 0 0);--color-badge-bg: oklch(30% 0 0);--color-badge-text: oklch(88% 0 0);--color-network-bits: oklch(78% .14 250);--color-host-bits: oklch(78% .13 30);--shadow-sm: 0 1px 2px oklch(0% 0 0 / .45), 0 0 0 1px oklch(100% 0 0 / .04);--shadow-md: 0 6px 16px oklch(0% 0 0 / .42), 0 1px 2px oklch(0% 0 0 / .36), 0 0 0 1px oklch(100% 0 0 / .05);--shadow-lg: 0 14px 28px oklch(0% 0 0 / .46), 0 2px 8px oklch(0% 0 0 / .4), 0 0 0 1px oklch(100% 0 0 / .06)}}}@layer base{*,*:before,*:after{box-sizing:border-box}html,body{margin:0;min-height:100%}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.45;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:var(--color-link);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.2}p{margin:0;color:var(--color-text-muted)}:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}code,pre,kbd,samp{font-family:var(--font-mono);font-size:.92em}}@layer layout{.app{min-height:100vh;display:grid;grid-template-rows:auto auto 1fr auto;background:var(--color-bg)}.app-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:12px 20px;border-bottom:1px solid var(--color-border);background:var(--color-bg-elevated)}.app-brand-link{text-decoration:none;color:inherit;display:inline-flex;flex-direction:column;gap:2px;min-width:0}.app-brand-link:hover{opacity:.8}.app-brand-link p{font-size:.72rem;color:var(--color-text-soft);opacity:.7}.app-brand-link h1{font-size:1.25rem;font-weight:700;margin:0;line-height:1.2;color:var(--color-text)}.app-brand-link:hover{text-decoration:none;color:inherit;opacity:.8}.app-tabs{border-bottom:1px solid var(--color-border);background:var(--color-bg-subtle);overflow-x:auto;scrollbar-width:thin}.tab-list{display:inline-flex;min-width:100%;gap:var(--space-1);padding:var(--space-2) var(--space-3)}.app-main{padding:var(--space-5);display:grid;gap:var(--space-4);align-content:start;max-width:52rem;margin-inline:auto;width:100%}}@layer components{.card{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--space-4)}.section-title{font-size:.95rem;font-weight:600;color:var(--color-text);margin-bottom:var(--space-3)}.tab-button{appearance:none;border:1px solid transparent;background:transparent;color:var(--color-tab-idle-text);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);font:inherit;font-size:.9rem;font-weight:500;white-space:nowrap;transition:color var(--dur-fast) var(--ease-standard),background-color var(--dur-fast) var(--ease-standard),border-color var(--dur-fast) var(--ease-standard);cursor:pointer}.tab-button:hover{color:var(--color-text);background:var(--color-bg-elevated);border-color:var(--color-border)}.tab-button[aria-selected=true],.tab-button.is-active{background:var(--color-tab-active-bg);color:var(--color-tab-active-text);border-color:var(--color-border-strong);box-shadow:var(--shadow-sm)}.theme-toggle{width:2.25rem;height:2.25rem;display:inline-grid;place-items:center;border-radius:var(--radius-pill);border:1px solid var(--color-border);background:var(--color-bg-elevated);color:var(--color-text-muted);box-shadow:var(--shadow-sm);transition:all var(--dur-mid) var(--ease-standard);cursor:pointer}.theme-toggle:hover{color:var(--color-text);border-color:var(--color-border-strong)}.ip-form{display:grid;gap:var(--space-3)}.form-row{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--space-3)}.field{grid-column:span 12;display:grid;gap:var(--space-1)}.field.is-half{grid-column:span 6}.field.is-fill{grid-column:span 10}.field.is-auto{grid-column:span 2}.field.is-inline-btn{display:flex;align-items:flex-end}.field label{font-size:.82rem;font-weight:600;color:var(--color-text-muted)}.input,.select,.button{width:100%;min-height:2.25rem;border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-bg-elevated);color:var(--color-text);padding:0 var(--space-3);font:inherit;transition:border-color var(--dur-fast) var(--ease-standard),box-shadow var(--dur-fast) var(--ease-standard),background-color var(--dur-fast) var(--ease-standard)}.button{width:auto;background:var(--primary-600);color:var(--neutral-0);border-color:transparent;font-weight:600;cursor:pointer;padding-inline:var(--space-5)}.button:hover{background:var(--primary-700)}.results-table,.split-table,.cidr-table{width:100%;border-collapse:separate;border-spacing:0;font-size:.88rem;background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.results-table th,.results-table td,.split-table th,.split-table td,.cidr-table th,.cidr-table td{padding:var(--space-2) var(--space-3);border-bottom:1px solid var(--color-border);text-align:left;vertical-align:middle}.results-table thead th,.split-table thead th,.cidr-table thead th{font-size:.78rem;font-weight:700;letter-spacing:.02em;color:var(--color-text-soft);background:var(--color-bg-subtle);text-transform:uppercase}.results-table tbody tr:hover,.split-table tbody tr:hover,.cidr-table tbody tr:hover{background:color-mix(in oklch,var(--color-bg-subtle) 70%,transparent)}.results-table tr:last-child td,.split-table tr:last-child td,.cidr-table tr:last-child td{border-bottom:0}.copy-cell{position:relative;padding-right:2.6rem}.copy-btn{position:absolute;right:var(--space-2);top:50%;transform:translateY(-50%);border:1px solid var(--color-border);background:var(--color-bg-elevated);color:var(--color-text-soft);width:1.75rem;height:1.75rem;border-radius:var(--radius-sm);opacity:0;pointer-events:none;transition:opacity var(--dur-fast) var(--ease-standard),color var(--dur-fast) var(--ease-standard),border-color var(--dur-fast) var(--ease-standard);cursor:copy}.results-table tr:hover .copy-btn,.copy-cell:focus-within .copy-btn{opacity:1;pointer-events:auto}.binary-display{display:grid;gap:var(--space-2);font-family:var(--font-mono);font-size:.8rem;overflow-x:auto}.binary-row{display:flex;flex-wrap:nowrap;gap:var(--space-1)}.bit{min-width:.95rem;padding:.12rem .18rem;border-radius:.25rem;text-align:center;background:var(--color-bg-subtle);color:var(--color-text-muted)}.bit.network{color:var(--color-network-bits);background:color-mix(in oklch,var(--color-network-bits) 16%,transparent)}.bit.host{color:var(--color-host-bits);background:color-mix(in oklch,var(--color-host-bits) 15%,transparent)}.subnet-map{display:grid;gap:var(--space-2)}.subnet-track{display:flex;flex-wrap:wrap;gap:var(--space-1)}.subnet-block{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg-subtle);padding:var(--space-2);font-size:.78rem;text-align:center;white-space:nowrap;min-width:7rem;flex:0 0 auto}.badge{display:inline-flex;align-items:center;gap:var(--space-1);border-radius:var(--radius-pill);padding:.125rem .5rem;font-size:.73rem;font-weight:600;border:1px solid var(--color-border);background:var(--color-badge-bg);color:var(--color-badge-text);white-space:nowrap}.badge.success{color:var(--success-500)}.badge.warning{color:var(--warning-500)}.badge.error{color:var(--error-500)}.badge.info{color:var(--info-500)}.app-footer{flex-shrink:0;border-top:1px solid var(--color-border);background:var(--color-bg-elevated);padding:10px var(--space-5)}.app-footer__inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-3)}.app-footer__brand,.app-footer__links,.app-footer__trust{display:inline-flex;align-items:center;gap:var(--space-2);font-size:.75rem;color:var(--color-text-soft)}.app-footer__links{flex-wrap:wrap}.app-footer__link,.app-footer__version{border:0;background:none;padding:0;margin:0;font:inherit;color:var(--color-text-muted);text-decoration:none;cursor:pointer}.app-footer__link:hover,.app-footer__version:hover{color:var(--color-text);text-decoration:underline;text-underline-offset:.2em}.app-footer__separator{color:var(--color-text-soft)}.app-footer__version{border-radius:var(--radius-pill);border:1px solid var(--color-border);padding:0 var(--space-2);line-height:1.6}.consent-banner{position:fixed;inset-inline:var(--space-4);inset-block-end:var(--space-4);z-index:30;display:grid;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg-elevated);box-shadow:var(--shadow-lg);opacity:0;transform:translateY(calc(100% + var(--space-4)));transition:transform var(--dur-slow) var(--ease-standard),opacity var(--dur-slow) var(--ease-standard)}.consent-banner.is-visible{opacity:1;transform:translateY(0)}.consent-banner.is-exiting{opacity:0;transform:translateY(calc(100% + var(--space-4)))}.consent-banner__text{margin:0;color:var(--color-text);font-size:.88rem}.consent-banner__actions{display:flex;justify-content:flex-end;gap:var(--space-2);flex-wrap:wrap}.consent-banner__btn{border:1px solid var(--color-border);border-radius:var(--radius-md);min-height:2.25rem;padding:0 var(--space-3);font:inherit;cursor:pointer}.consent-banner__btn--ghost{background:var(--color-bg-subtle);color:var(--color-text)}.consent-banner__btn--primary{background:var(--primary-600);border-color:transparent;color:var(--neutral-0)}.consent-banner__link{justify-self:start;border:0;background:none;padding:0;color:var(--primary-600);font:inherit;text-decoration:underline;text-underline-offset:.2em;cursor:pointer}.legal-page{position:fixed;inset:0;z-index:40;display:grid;grid-template-rows:auto 1fr;background:var(--color-bg);color:var(--color-text)}.legal-page__header{position:sticky;top:0;z-index:1;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-border);background:var(--color-bg-elevated);padding:var(--space-3) var(--space-5)}.legal-page__content{overflow:auto;padding:var(--space-5);max-width:56rem;width:100%;margin:0 auto;line-height:1.6}.legal-page__content h1{font-size:1.8rem;margin-bottom:var(--space-4)}.legal-page__content h2{margin-top:var(--space-6);margin-bottom:var(--space-2);font-size:1.2rem}.legal-page__content h3{margin-top:var(--space-4);margin-bottom:var(--space-2);font-size:1rem}.legal-page__content p,.legal-page__content ul{margin:var(--space-2) 0}.legal-page__content ul{padding-left:1.3rem}.legal-page__back,.legal-page__print{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-elevated);color:var(--color-text);min-height:2rem;padding:0 var(--space-3);font:inherit;cursor:pointer}.legal-page__title{margin:0;font-size:1.2rem;text-align:center}.legal-page__credits-list{list-style:none;padding:0;margin:var(--space-4) 0 0;display:grid;gap:var(--space-3)}.legal-page__credit{border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-3);background:var(--color-bg-elevated)}.legal-page__credit-name{margin:0 0 var(--space-1)}.legal-page__license-badge{display:inline-flex;align-items:center;border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:.1rem var(--space-2);font-size:.72rem;color:var(--color-text-soft);margin-bottom:var(--space-2)}.modal-backdrop{position:fixed;inset:0;z-index:45;background:color-mix(in oklch,var(--neutral-950) 40%,transparent);backdrop-filter:blur(2px);display:grid;place-items:center;padding:var(--space-4)}.legal-page[hidden],.modal-backdrop[hidden]{display:none}.modal,.version-modal{width:min(42rem,100%);max-height:min(85vh,52rem);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden}.modal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-3);border-bottom:1px solid var(--color-border);padding:var(--space-4)}.modal__body{overflow:auto;padding:var(--space-4)}.version-modal__title-wrap{display:grid;gap:var(--space-1)}.version-modal__meta{margin:0;color:var(--color-text-soft);font-size:.85rem}.version-modal__close{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-subtle);color:var(--color-text);width:2rem;height:2rem;cursor:pointer}.version-modal__heading{margin:0 0 var(--space-3);font-size:1rem}.version-modal__entry{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-subtle);padding:var(--space-3);margin-bottom:var(--space-3)}.version-modal__entry-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);margin-bottom:var(--space-2)}.version-modal__version-badge{border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:.1rem var(--space-2);font-size:.74rem;font-weight:600}.version-modal__entry-date{color:var(--color-text-soft);font-size:.76rem}.version-modal__changes{margin:0;padding-left:1.15rem;color:var(--color-text-muted);font-size:.86rem}}@layer utilities{.mono,.ip-value,.hex-value,.binary-value,.cidr-value{font-family:var(--font-mono);font-variant-ligatures:none}.text-muted{color:var(--color-text-muted)}.text-soft{color:var(--color-text-soft)}.surface{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}.stack-sm{display:grid;gap:var(--space-2)}.stack-md{display:grid;gap:var(--space-4)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}}@media(max-width:768px){.app-main{padding:var(--space-4)}.app-header,.app-footer{padding:var(--space-3) var(--space-4)}.app-footer__inner{align-items:flex-start}.consent-banner{inset-inline:var(--space-3);inset-block-end:var(--space-3);padding:var(--space-3)}.consent-banner__actions{justify-content:stretch}.consent-banner__btn{flex:1}.legal-page__header{padding:var(--space-3) var(--space-4)}.legal-page__content{padding:var(--space-4)}.field.is-half{grid-column:span 12}.field.is-fill{grid-column:span 8}.field.is-auto{grid-column:span 4}}