/* SMS Broadcast — UI built on the provided design.md tokens:
   white canvas + ink, one blue accent used scarcely, pill CTAs, 24px cards, dark editorial bands,
   display type at weight 400, mono for every number. Fonts: Inter + JetBrains Mono (self-hosted, OFL). */

@font-face { font-family: 'Inter'; src: url('/fonts/inter-var.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('/fonts/mono-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('/fonts/mono-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  /* colors */
  --primary: #0052ff; --primary-active: #003ecc; --primary-disabled: #a8b8cc; --on-primary: #ffffff;
  --canvas: #ffffff; --surface-soft: #f7f7f7; --surface-strong: #eef0f3; --surface-dark: #0a0b0d; --surface-dark-elevated: #16181c;
  --hairline: #dee1e6; --hairline-soft: #eef0f3;
  --ink: #0a0b0d; --body: #5b616e; --muted: #7c828a; --muted-soft: #a8acb3; --on-dark: #ffffff; --on-dark-soft: #a8acb3;
  --up: #05b169; --down: #cf202f; --warn: #a86b00;
  /* type */
  --font: 'Inter', -apple-system, system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* radius */
  --r-xs: 4px; --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px; --r-pill: 100px; --r-full: 9999px;
  /* spacing */
  --s-xxs: 4px; --s-xs: 8px; --s-sm: 12px; --s-base: 16px; --s-md: 20px; --s-lg: 24px; --s-xl: 32px; --s-xxl: 48px; --s-section: 96px;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  --content: 1200px;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--canvas); color: var(--ink); font: 400 16px/1.5 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; font-weight: 500; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; background: var(--canvas); padding: 6px 10px; z-index: 99; border-radius: var(--r-pill); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.boot { padding: 40px; color: var(--muted); }

/* Typography */
h1, .display { font-weight: 400; letter-spacing: -0.5px; margin: 0; }
h1 { font-size: 36px; line-height: 1.11; }
h2 { font-size: 18px; font-weight: 600; line-height: 1.33; margin: 0 0 var(--s-base); }
h3 { font-size: 16px; font-weight: 600; line-height: 1.25; margin: 0 0 var(--s-xs); }
.display-lg { font-size: 52px; line-height: 1; letter-spacing: -1.3px; font-weight: 400; }
.display-md { font-size: 44px; line-height: 1.09; letter-spacing: -1px; font-weight: 400; }
.muted { color: var(--muted); } .body { color: var(--body); } .small { font-size: 14px; } .caption { font-size: 13px; }
.mono, .num, td.num, .kpi .value { font-family: var(--mono); font-weight: 500; font-variant-numeric: tabular-nums; }
.eyebrow { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--ink); background: var(--surface-strong); padding: 4px 12px; border-radius: var(--r-pill); }
.up { color: var(--up); } .down { color: var(--down); }

/* Top navigation (64px) */
.topnav { position: sticky; top: 0; z-index: 20; background: var(--canvas); border-bottom: 1px solid var(--hairline); }
.topnav .inner { max-width: var(--content); margin: 0 auto; height: 64px; display: flex; align-items: center; gap: var(--s-lg); padding: 0 var(--s-lg); }
.wordmark { display: inline-flex; align-items: center; gap: 10px; color: var(--primary); font-weight: 600; font-size: 18px; letter-spacing: -0.3px; white-space: nowrap; }
.wordmark:hover { text-decoration: none; }
.wordmark img { width: 28px; height: 28px; }
.navlinks { display: flex; align-items: center; gap: 2px; flex: 1; min-width: 0; }
.navlinks a, .navmore > button { color: var(--ink); font-size: 14px; font-weight: 500; line-height: 1.4; padding: 8px 12px; border-radius: var(--r-pill); white-space: nowrap; background: none; border: 0; height: auto; cursor: pointer; }
.navlinks a:hover, .navmore > button:hover { background: var(--surface-strong); text-decoration: none; }
.navlinks a[aria-current="page"] { background: var(--surface-strong); }
.navmore { position: relative; }
.navmenu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 220px; background: var(--canvas); border: 1px solid var(--hairline); border-radius: var(--r-lg); box-shadow: var(--shadow); padding: var(--s-xs); display: flex; flex-direction: column; }
.navmenu a { border-radius: var(--r-sm); padding: 10px 12px; }
.navright { display: flex; align-items: center; gap: var(--s-xs); margin-left: auto; }
.avatar { width: 32px; height: 32px; border-radius: var(--r-full); background: var(--surface-strong); color: var(--ink); display: inline-grid; place-items: center; font-size: 13px; font-weight: 600; }
.userpill { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); padding: 4px 12px 4px 4px; border-radius: var(--r-pill); font-size: 14px; }
.userpill:hover { background: var(--surface-strong); text-decoration: none; }
.hamburger { display: none; }
.mobilemenu { display: none; }
@media (max-width: 1100px) { .navlinks .opt { display: none; } }
@media (max-width: 767px) {
  .navlinks { display: none; }
  .hamburger { display: inline-flex; }
  .userpill .uname, .navright .signout { display: none; }
  .topnav .inner { padding: 0 var(--s-base); gap: var(--s-sm); }
  .mobilemenu.open { display: flex; flex-direction: column; padding: var(--s-xs) var(--s-base) var(--s-base); border-top: 1px solid var(--hairline); }
  .mobilemenu a { color: var(--ink); padding: 12px; border-radius: var(--r-sm); }
  .mobilemenu a[aria-current="page"] { background: var(--surface-strong); }
}

/* Page frame */
.page { max-width: var(--content); margin: 0 auto; padding: var(--s-xxl) var(--s-lg) var(--s-section); }
.pagehead { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--s-base); flex-wrap: wrap; margin-bottom: var(--s-xl); }
.pagehead .sub { color: var(--body); margin-top: var(--s-xs); }
@media (max-width: 639px) { .page { padding: var(--s-lg) var(--s-base) var(--s-xxl); } h1 { font-size: 30px; } }

/* Dark editorial band (hero) with layered product-UI cards */
.band-dark { background: var(--surface-dark); color: var(--on-dark); }
.band-dark .inner { max-width: var(--content); margin: 0 auto; padding: var(--s-xxl) var(--s-lg); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: var(--s-xxl); align-items: center; }
.band-dark .lead { color: var(--on-dark-soft); max-width: 460px; margin: var(--s-base) 0 var(--s-lg); }
.band-dark h1 { font-size: 52px; line-height: 1; letter-spacing: -1.3px; }
.band-dark .eyebrow { background: var(--surface-dark-elevated); color: var(--on-dark); margin-bottom: var(--s-base); }
.stack { position: relative; min-height: 330px; }
.ui-card-dark { background: var(--surface-dark-elevated); color: var(--on-dark); border-radius: var(--r-xl); padding: var(--s-xl); border: 1px solid #23262c; }
.stack .ui-card-dark.back { position: absolute; right: 0; top: 0; width: 54%; transform: rotate(3deg); padding: var(--s-lg); }
.stack .ui-card-dark.front { position: relative; width: 60%; margin-top: 120px; box-shadow: 0 24px 48px rgba(0,0,0,.35); }
.ui-card-dark .label { color: var(--on-dark-soft); font-size: 13px; }
.ui-card-dark .big { font-family: var(--mono); font-weight: 500; font-size: 40px; letter-spacing: -1px; line-height: 1.1; }
.ui-card-dark .rows { display: grid; gap: 10px; margin-top: var(--s-base); }
.ui-card-dark .r { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; }
.ui-card-dark .r .v { font-family: var(--mono); }
.minigrid { display: grid; grid-template-columns: repeat(8, 14px); gap: 7px; margin-top: var(--s-base); justify-content: end; }
.minigrid i { aspect-ratio: 1; border-radius: var(--r-full); background: #2a2e35; }
.minigrid i.ok { background: var(--primary); } .minigrid i.bad { background: #3a2226; }
@media (max-width: 1023px) { .band-dark .inner { grid-template-columns: 1fr; } .band-dark h1 { font-size: 44px; } }
@media (max-width: 639px) {
  .band-dark .inner { padding: var(--s-xl) var(--s-base); }
  .band-dark h1 { font-size: 36px; letter-spacing: -0.5px; }
  .stack { min-height: 0; } .stack .back { display: none; } .stack .ui-card-dark.front { width: 100%; margin-top: 0; }
}

/* Cards & grids */
.card { background: var(--canvas); border: 1px solid var(--hairline); border-radius: var(--r-xl); padding: var(--s-xl); margin-bottom: var(--s-lg); }
.card.soft { background: var(--surface-soft); border-color: transparent; }
.grid { display: grid; gap: var(--s-lg); }
.grid.kpis { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid.two > .card, .grid.kpis > .card { margin-bottom: 0; }
.grid + .card, .grid + .grid { margin-top: var(--s-lg); }
.kpi { padding: var(--s-lg); }
.kpi .label { color: var(--muted); font-size: 14px; }
.kpi .value { font-size: 32px; letter-spacing: -0.5px; line-height: 1.2; margin-top: 4px; }
.row { display: flex; gap: var(--s-sm); align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
@media (max-width: 639px) { .card { padding: var(--s-lg) var(--s-base); border-radius: var(--r-lg); } .grid.two { grid-template-columns: 1fr; } }

/* Forms */
label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.field { margin-bottom: var(--s-md); }
.hint { color: var(--muted); font-size: 13px; margin-top: 6px; font-weight: 400; }
input[type=text], input[type=password], input[type=number], input[type=search], input[type=datetime-local], input[type=time], input[type=url], select, textarea {
  width: 100%; min-height: 48px; padding: 13px 16px; border: 1px solid var(--hairline); border-radius: var(--r-md); background: var(--canvas); color: var(--ink); font: 400 16px/1.4 var(--font);
}
textarea { min-height: 120px; resize: vertical; }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 21px, calc(100% - 15px) 21px; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
input[type=search] { background: var(--surface-strong); border-color: transparent; border-radius: var(--r-pill); min-height: 44px; padding: 10px 20px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
input[type=file] { font: inherit; font-size: 14px; }
input[type=file]::file-selector-button { font: 600 14px var(--font); border: 0; background: var(--surface-strong); color: var(--ink); border-radius: var(--r-pill); padding: 10px 16px; margin-right: 12px; cursor: pointer; }
.check { display: flex; align-items: center; gap: 10px; font-weight: 400; font-size: 15px; margin: 8px 0; color: var(--ink); }
.check input { width: 18px; height: 18px; accent-color: var(--primary); }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0 12px; max-height: 240px; overflow: auto; padding: 8px 14px; border: 1px solid var(--hairline); border-radius: var(--r-md); }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { font-size: 14px; font-weight: 600; margin-bottom: 6px; padding: 0; }

/* Buttons — pills only */
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 12px 20px; border-radius: var(--r-pill);
  border: 0; background: var(--surface-strong); color: var(--ink); font: 600 16px/1.15 var(--font); cursor: pointer; white-space: nowrap; text-decoration: none;
}
button:hover, .btn:hover { text-decoration: none; filter: brightness(.97); }
button:active, .btn:active { filter: brightness(.92); }
button.primary, .btn.primary { background: var(--primary); color: var(--on-primary); }
button.primary:active, .btn.primary:active { background: var(--primary-active); filter: none; }
button.primary:disabled { background: var(--primary-disabled); }
button.danger { color: var(--down); }
button.ghost, .btn.ghost { background: transparent; color: var(--primary); padding: 12px 8px; }
button.small, .btn.small { height: 34px; padding: 6px 14px; font-size: 14px; }
button.lg, .btn.lg { height: 56px; padding: 16px 32px; }
button:disabled { cursor: not-allowed; opacity: .6; }
.band-dark .btn.secondary-dark, .band-dark button.secondary-dark { background: var(--surface-dark-elevated); color: var(--on-dark); }
.band-dark .btn.outline-dark { background: transparent; color: var(--on-dark); box-shadow: inset 0 0 0 1px var(--on-dark); }

/* Tables (asset-row style) */
.table-wrap { overflow-x: auto; margin: 0 calc(-1 * var(--s-xs)); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 14px var(--s-xs); border-bottom: 1px solid var(--hairline); vertical-align: middle; font-size: 15px; }
th { font-size: 13px; color: var(--muted); font-weight: 500; }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
.empty { padding: var(--s-xxl) var(--s-base); text-align: center; color: var(--muted); }
.pager { display: flex; gap: var(--s-xs); align-items: center; justify-content: flex-end; margin-top: var(--s-base); }
.truncate { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.glyph { width: 32px; height: 32px; border-radius: var(--r-full); background: var(--surface-strong); display: inline-grid; place-items: center; font-size: 12px; font-weight: 600; color: var(--ink); flex: none; }
.cellrow { display: flex; align-items: center; gap: 12px; }

/* Badges — pill, neutral plate; status conveyed by text color only */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: var(--r-pill); font-size: 12px; font-weight: 600; line-height: 1.5; background: var(--surface-strong); color: var(--ink); white-space: nowrap; text-transform: capitalize; }
.badge::before { content: ''; width: 6px; height: 6px; border-radius: var(--r-full); background: var(--muted-soft); }
.badge.ok { color: var(--up); } .badge.ok::before { background: var(--up); }
.badge.bad { color: var(--down); } .badge.bad::before { background: var(--down); }
.badge.warn { color: var(--warn); } .badge.warn::before { background: var(--warn); }
.badge.info { color: var(--primary); } .badge.info::before { background: var(--primary); }

/* Port grid */
.ports { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--s-sm); }
.port { border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: var(--s-base); background: var(--canvas); }
.port.off { background: var(--surface-soft); color: var(--muted); }
.port .pn { font-weight: 600; font-size: 15px; }
.port .meta { font-size: 13px; color: var(--body); margin-top: 2px; }
.port .state.ok { color: var(--up); } .port .state.bad { color: var(--down); } .port .state.warn { color: var(--warn); }
.bars { display: inline-flex; gap: 2px; align-items: flex-end; height: 12px; vertical-align: middle; }
.bars i { width: 3px; background: var(--hairline); border-radius: 1px; } .bars i.on { background: var(--ink); }
.bars i:nth-child(1) { height: 4px; } .bars i:nth-child(2) { height: 6px; } .bars i:nth-child(3) { height: 8px; } .bars i:nth-child(4) { height: 10px; } .bars i:nth-child(5) { height: 12px; }
.meter { height: 4px; background: var(--surface-strong); border-radius: var(--r-pill); overflow: hidden; margin-top: 10px; }
.meter > span { display: block; height: 100%; background: var(--primary); }

/* Progress (data viz: blue scale + neutrals; red/green only as text) */
.progress { display: flex; height: 8px; border-radius: var(--r-pill); overflow: hidden; background: var(--surface-strong); }
.progress span { display: block; height: 100%; }
.legend { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--body); margin-top: 10px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: var(--r-full); margin-right: 6px; vertical-align: -1px; }
.legend b { font-family: var(--mono); font-weight: 500; color: var(--ink); margin-left: 4px; }

/* Login — split: dark editorial hero + white form */
.login { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.login .hero { background: var(--surface-dark); color: var(--on-dark); padding: var(--s-xxl); display: flex; flex-direction: column; justify-content: space-between; gap: var(--s-xl); }
.login .hero .wordmark { color: var(--on-dark); }
.login .hero h1 { font-size: 52px; line-height: 1; letter-spacing: -1.3px; max-width: 520px; }
.login .hero p { color: var(--on-dark-soft); max-width: 440px; }
.login .formside { display: grid; place-items: center; padding: var(--s-xl) var(--s-lg); }
.login .formbox { width: 100%; max-width: 400px; }
.login .formbox h2 { font-size: 32px; font-weight: 400; letter-spacing: -0.4px; line-height: 1.13; margin-bottom: var(--s-xs); }
.login .formbox .sub { color: var(--body); margin: 0 0 var(--s-xl); }
.login button[type=submit] { width: 100%; height: 56px; }
@media (max-width: 899px) { .login { grid-template-columns: 1fr; } .login .hero { padding: var(--s-xl) var(--s-lg); } .login .hero h1 { font-size: 36px; letter-spacing: -0.5px; } .login .hero .stack { display: none; } }

/* Misc */
.alert { padding: 14px 18px; border-radius: var(--r-lg); margin-bottom: var(--s-base); background: var(--surface-soft); color: var(--ink); font-size: 15px; border-left: 3px solid var(--muted-soft); }
.alert.bad { border-left-color: var(--down); } .alert.bad strong, .alert.bad { color: var(--ink); }
.alert.warn { border-left-color: var(--warn); }
.alert.info { border-left-color: var(--primary); }
.counter { font-size: 13px; color: var(--muted); margin-top: 6px; font-family: var(--mono); }
.secret { font-family: var(--mono); background: var(--surface-strong); padding: 12px 16px; border-radius: var(--r-md); word-break: break-all; user-select: all; font-size: 14px; }
pre.secret { white-space: pre-wrap; }
#toasts { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 100; }
.toast { background: var(--surface-dark); color: var(--on-dark); padding: 12px 20px; border-radius: var(--r-pill); box-shadow: var(--shadow); max-width: 420px; font-size: 15px; }
.toast.bad { background: var(--surface-dark); color: #ff8a93; }
dialog { border: 0; border-radius: var(--r-xl); background: var(--canvas); color: var(--ink); padding: var(--s-xl); max-width: 480px; width: calc(100% - 32px); }
dialog h2 { font-size: 24px; font-weight: 400; letter-spacing: -0.3px; }
dialog p { color: var(--body); }
dialog::backdrop { background: rgba(10, 11, 13, .55); }
.tabs { display: flex; gap: 4px; margin-bottom: var(--s-lg); flex-wrap: wrap; }
.tabs button { height: 36px; padding: 8px 16px; font-size: 14px; background: transparent; }
.tabs button[aria-selected="true"] { background: var(--surface-dark); color: var(--on-dark); }
hr { border: 0; border-top: 1px solid var(--hairline); margin: var(--s-xl) 0; }
details summary { cursor: pointer; }
@media (prefers-reduced-motion: no-preference) { .meter > span, .progress span { transition: width .4s ease; } }