/* Shared/common UI foundation */
/* =============================================================
   HOSTNODEX — DESIGN SYSTEM
   app/static/css/shared/common.css
============================================================= */

/* --- 01. TOKENS ------------------------------------------- */
:root {
  --bg-body:   #030a15;
  --bg-subtle: #060f1e;
  --bg-base:   #080f1f;
  --surface-0: #0c1829;
  --surface-1: #111f35;
  --surface-2: #172840;
  --surface-3: #1d3252;

  --brand:       #4b8cf7;
  --brand-dark:  #2563eb;
  --brand-light: #76aaff;
  --brand-glow:  rgba(75,140,247,.14);
  --brand-glow-s:rgba(75,140,247,.30);

  --purple: #8b5cf6;
  --cyan:   #06b6d4;
  --green:  #10b981;

  --text:    #edf2ff;
  --text-2:  #94afd4;
  --text-3:  #566e8f;
  --text-off:#30445e;

  --border:   rgba(75,140,247,.13);
  --border-m: rgba(75,140,247,.24);
  --border-s: rgba(75,140,247,.44);

  --success:    #10b981;
  --success-bg: rgba(16,185,129,.1);
  --warning:    #f59e0b;
  --warning-bg: rgba(245,158,11,.1);
  --danger:     #ef4444;
  --danger-bg:  rgba(239,68,68,.1);

  --r-xs:  4px;  --r-sm: 6px;  --r: 10px;
  --r-md: 14px;  --r-lg: 18px; --r-xl: 24px; --r-pill: 999px;
  --radius: var(--r);
  --radius-lg: var(--r-lg);

  --sh-sm: 0 1px 4px rgba(0,0,0,.35);
  --sh:    0 4px 16px rgba(0,0,0,.45), 0 1px 4px rgba(0,0,0,.25);
  --sh-lg: 0 20px 50px rgba(0,0,0,.55), 0 4px 12px rgba(0,0,0,.3);
  --sh-glow: 0 0 40px rgba(75,140,247,.18);
  --bg-card: var(--surface-1);
  --bg-card-hover: var(--surface-2);
  --border-active: var(--brand-light);
  --font-mono: 'JetBrains Mono','Fira Code','Cascadia Code',ui-monospace,monospace;
  --content-max-width: 1200px;
  --page-gutter: clamp(1rem, 2.5vw, 1.25rem);
  --public-header-height: 5rem;
  --app-header-height: 4.75rem;
  --public-header-offset: calc(var(--public-header-height) + .75rem);
  --app-header-offset: calc(var(--app-header-height) + 1.25rem);
  --shell-gap: clamp(1rem, 2vw, 1.5rem);
  --shell-width: min(var(--content-max-width), calc(100% - (2 * var(--page-gutter))));
  --nav-shell-width: var(--shell-width);
  --nav-panel-shadow: 0 24px 64px rgba(0,0,0,.5);

  --fast: 110ms ease;
  --base: 200ms ease;
  --slow: 350ms ease;

  --z-nav:   200;
  --z-modal: 300;
  --z-toast: 400;
}

/* --- 02. BASE RESET --------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 6.5rem; }
body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  background: var(--bg-body);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
ul, ol { list-style: none; }
a { color: var(--brand); text-decoration: none; transition: color var(--fast); }
a:hover { color: var(--brand-light); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.copy-btn:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}
h1,h2,h3,h4,h5,h6 { line-height: 1.2; font-weight: 700; color: var(--text); }
p { color: var(--text-2); }

/* --- 03. LAYOUT ------------------------------------------- */
.container    { width: var(--shell-width); margin-inline: auto; }
.container-sm { width: min(740px,  calc(100% - (2 * var(--page-gutter)))); margin-inline: auto; }
.container-xs { width: min(480px,  calc(100% - (2 * var(--page-gutter)))); margin-inline: auto; }
.section    { padding-block: 5rem; }
.section-sm { padding-block: 3rem; }
.section-lg { padding-block: 6.5rem; }

.public-shell { --anchor-offset: calc(var(--public-header-offset) + 1rem); }

.app-shell { --anchor-offset: calc(var(--app-header-offset) + 1rem); }

.public-main {
  min-height: calc(100vh - var(--public-header-offset));
  min-height: calc(100dvh - var(--public-header-offset));
  padding-top: calc(var(--public-header-offset) + var(--shell-gap));
}

.public-main--flush { padding-top: var(--public-header-offset); }

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3,10,21,.58);
  z-index: calc(var(--z-nav) - 2);
  opacity: 0;
  transition: opacity var(--base);
}

.nav-backdrop[hidden] { display: none !important; }
.nav-backdrop.is-open { opacity: 1; }
body.has-open-nav { overflow: hidden; }

:where(main [id]) { scroll-margin-top: var(--anchor-offset, 6rem); }

/* --- 04. BUTTONS ------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  border: none;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--r);
  transition: all var(--base);
  white-space: nowrap;
  line-height: 1;
}
.btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.btn:disabled      { opacity: .45; cursor: not-allowed; pointer-events: none; }
.btn-sm { padding: .5rem 1rem;       font-size: .875rem;    border-radius: var(--r-sm); }
.btn-md { padding: .75rem 1.5rem;    font-size: .9375rem;   }
.btn-lg { padding: .9375rem 2rem;    font-size: 1rem;       border-radius: var(--r-md); }
.btn-xl { padding: 1.0625rem 2.5rem; font-size: 1.0625rem;  border-radius: var(--r-md); }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 18px rgba(75,140,247,.4);
}
.btn-primary:hover {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(75,140,247,.5);
}
.btn-ghost {
  background: var(--surface-1);
  color: var(--text);
  border: 1px solid var(--border-m);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); border-color: var(--border-s); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--brand-light);
  border: 1px solid var(--border-m);
}
.btn-outline:hover { background: var(--brand-glow); border-color: var(--brand); color: var(--brand-light); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-text   { background: transparent; color: var(--text-2); padding-inline: 0; }
.btn-text:hover { color: var(--text); }
.btn-icon   { padding: .625rem; border-radius: var(--r-sm); }

/* --- 05. FORMS -------------------------------------------- */
.form-group { display: grid; gap: .4rem; min-width: 0; }
.form-label { font-size: .875rem; font-weight: 500; color: var(--text-2); }
.form-control {
  width: 100%;
  background: var(--surface-0);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .75rem 1rem;
  color: var(--text);
  font-size: .9375rem;
  transition: border-color var(--fast), box-shadow var(--fast);
  appearance: none;
}
.form-control::placeholder { color: var(--text-3); }
.form-control:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(75,140,247,.2);
}
.form-control.is-invalid         { border-color: var(--danger); }
.form-control.is-invalid:focus   { box-shadow: 0 0 0 3px rgba(239,68,68,.2); }
.form-error { font-size: .8125rem; color: var(--danger); margin-top: .2rem; }
.form-hint  { font-size: .8125rem; color: var(--text-3);  margin-top: .2rem; }
.form-error-group { display: grid; gap: .25rem; }
.form-status {
  margin-top: .25rem;
  padding: .75rem .875rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: rgba(75,140,247,.08);
  color: var(--text-2);
  font-size: .875rem;
}
.form-status--success {
  border-color: rgba(16,185,129,.28);
  background: rgba(16,185,129,.1);
  color: #6ee7b7;
}
.form-status--error {
  border-color: rgba(239,68,68,.28);
  background: rgba(239,68,68,.12);
  color: #fca5a5;
}
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* --- 06. CARDS -------------------------------------------- */
.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  transition: border-color var(--base);
}
.card:hover { border-color: var(--border-m); }
.card-elevated {
  background: var(--surface-1);
  border: 1px solid var(--border-m);
  border-radius: var(--r-lg);
  padding: 2rem;
  box-shadow: var(--sh-lg);
}

/* --- 07. BADGES ------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .25rem .7rem;
  border-radius: var(--r-pill);
  font-size: .75rem;
  font-weight: 600;
  border: 1px solid transparent;
}
.badge-blue   { background: rgba(75,140,247,.14);  color: #76aaff; border-color: rgba(75,140,247,.28); }
.badge-green  { background: rgba(16,185,129,.14);  color: #34d399; border-color: rgba(16,185,129,.28); }
.badge-yellow { background: rgba(245,158,11,.14);  color: #fbbf24; border-color: rgba(245,158,11,.28); }
.badge-red    { background: rgba(239,68,68,.14);   color: #f87171; border-color: rgba(239,68,68,.28);  }
.badge-purple { background: rgba(139,92,246,.14);  color: #a78bfa; border-color: rgba(139,92,246,.28); }

/* --- 08. FLASH MESSAGES ----------------------------------- */
.flash-stack { display: grid; gap: .625rem; padding-block: 1.25rem; }
.flash {
  display: flex;
  gap: .75rem;
  padding: .9375rem 1.125rem;
  border-radius: var(--r);
  border: 1px solid;
  font-size: .9375rem;
}
.flash-success { background: var(--success-bg); border-color: rgba(16,185,129,.28); color: #6ee7b7; }
.flash-error,
.flash-danger  { background: var(--danger-bg);  border-color: rgba(239,68,68,.28);  color: #fca5a5; }
.flash-warning,
.flash-info    { background: var(--warning-bg); border-color: rgba(245,158,11,.28); color: #fcd34d; }

/* --- 09. TABLES ------------------------------------------- */
.table-wrap { overflow-x: auto; border-radius: var(--r-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
thead { background: var(--surface-0); }
th {
  padding: .875rem 1.25rem;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
}
td { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); color: var(--text-2); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(75,140,247,.04); }

/* status dots */
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: .4rem; }
.dot-green  { background: var(--success); box-shadow: 0 0 6px var(--success); }
.dot-yellow { background: var(--warning); }
.dot-red    { background: var(--danger); }
.dot-blue   { background: var(--brand); }
/* ============================================================
   UTILITIES
============================================================ */
.text-center    { text-align: center; }
.text-brand     { color: var(--brand-light); }
.text-muted     { color: var(--text-3); }
.text-sm        { font-size: .875rem; }
.text-xs        { font-size: .75rem; }
.text-lg        { font-size: 1.125rem; }
.fw-600         { font-weight: 600; }
.fw-700         { font-weight: 700; }
.fw-800         { font-weight: 800; }
.d-block        { display: block; }
.w-full         { width: 100%; }
.mt-1 { margin-top: .5rem; }  .mt-2 { margin-top: 1rem; }   .mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }   .mt-5 { margin-top: 3rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }  .mb-5 { margin-bottom: 3rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
/* ── Confirm modal ───────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.65);
  display: none; align-items: center; justify-content: center; z-index: 1000;
  padding: 1rem;
}
.modal-backdrop.is-open { display: flex; }
.modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem; width: 100%; max-width: 440px;
  box-shadow: 0 24px 64px rgba(0,0,0,.45);
}
.modal h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: .75rem; }
.modal p  { color: var(--text-2); font-size: .9375rem; margin-bottom: 1.5rem; }
.modal__acts { display: flex; gap: .75rem; justify-content: flex-end; }
/* ── Alert banners ───────────────────────────────────────── */
.alert {
  display: flex; gap: .75rem; align-items: flex-start;
  padding: .875rem 1.25rem;
  border-radius: var(--radius);
  font-size: .875rem; line-height: 1.5;
  margin-bottom: 1.5rem;
}
.alert code {
  background: rgba(255,255,255,.12);
  padding: .1em .4em;
  border-radius: 4px;
  font-size: .8125rem;
}
.alert--error {
  background: rgba(239,68,68,.12);
  border: 1px solid rgba(239,68,68,.35);
  color: #fca5a5;
}
.alert--warning {
  background: rgba(234,179,8,.1);
  border: 1px solid rgba(234,179,8,.3);
  color: #fde68a;
}
.alert--info {
  background: rgba(59,130,246,.1);
  border: 1px solid rgba(59,130,246,.3);
  color: #93c5fd;
}
.alert--success {
  background: rgba(34,197,94,.1);
  border: 1px solid rgba(34,197,94,.3);
  color: #86efac;
}

body[data-page-family="authenticated"] [data-flash-region],
body[data-page-family="manage"] [data-flash-region] {
  margin-bottom: .25rem;
}
body[data-page-family="authenticated"] .flash,
body[data-page-family="manage"] .flash,
body[data-page-family="authenticated"] .alert,
body[data-page-family="manage"] .alert {
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 18px 36px rgba(2, 6, 23, .18);
}
body[data-page-family="authenticated"] .flash::before,
body[data-page-family="manage"] .flash::before,
body[data-page-family="authenticated"] .alert::before,
body[data-page-family="manage"] .alert::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(118,170,255,.78) 50%, transparent 100%);
}
body[data-page-family="authenticated"] .modal-backdrop,
body[data-page-family="manage"] .modal-backdrop {
  background: rgba(3,10,21,.74);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
body[data-page-family="authenticated"] .modal,
body[data-page-family="manage"] .modal {
  background:
    linear-gradient(180deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,0) 18%),
    linear-gradient(180deg, rgba(17,31,53,.96) 0%, rgba(8,15,31,.99) 100%);
  border-color: rgba(75,140,247,.18);
  border-radius: var(--r-xl);
  box-shadow: 0 28px 72px rgba(2, 6, 23, .44);
}
body[data-page-family="authenticated"] .modal__acts,
body[data-page-family="manage"] .modal__acts {
  padding-top: 1rem;
  border-top: 1px solid rgba(75,140,247,.12);
}

/* ── Template refactor utilities ───────────────────────────── */
.brand-accent { color: var(--brand-light); }
.brand-link { color: var(--brand); }
.inline-form { display: inline; }
.app-page--flash { padding-bottom: 0; }
.public-flash-wrapper { padding-top: calc(var(--public-header-height) + .75rem); }
.section-surface-body { background: var(--bg-body); }
.section-surface-subtle { background: var(--bg-subtle); }
.section-heading-spaced { margin-bottom: 1.75rem; }
.cta-section--bordered { border-top: 1px solid var(--border); }

/* ============================================================
   SHARED RESPONSIVE
============================================================ */
@media (max-width: 1120px) {
  .pub-nav__links a { padding-inline: .75rem; }
}
@media (max-width: 960px) {
  .pub-nav__links,
  .pub-nav__actions > .btn { display: none !important; }
  .pub-nav__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: .75rem;
  }
  .pub-nav__logo {
    min-width: 0;
    flex-shrink: 1;
  }
  .pub-nav__wordmark {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .pub-nav__actions {
    gap: 0;
    flex: 0 0 auto;
    justify-self: end;
  }
  .pub-nav__burger { display: inline-flex !important; align-items: center; justify-content: center; }
  .app-nav__links,
  .app-nav__right > .btn,
  .app-nav__right > form.inline-form { display: none !important; }
}
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .split-row    { grid-template-columns: 1fr; gap: 3rem; }
  .split-row--rev .split-row__vis { order: 0; }
  .pub-footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .legal-sidebar { position: static; }
}
@media (max-width: 768px) {
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid    { grid-template-columns: 1fr; }
  .pricing-grid    { grid-template-columns: 1fr; }
  .pub-footer__grid{ grid-template-columns: 1fr; }
  .copy-row,
  .form-inline-actions { flex-direction: column; align-items: stretch; }
  .form-inline-grid,
  .form-inline-grid--reinstall { grid-template-columns: 1fr; }
  .legal-article { gap: 1.25rem; }
  .legal-sidebar { gap: 0.75rem; }
}
@media (max-width: 640px) {
  .auth-form .form-row { grid-template-columns: 1fr; }
  #cc-main .cm--bar {
    inset-inline: var(--page-gutter);
    bottom: var(--page-gutter);
    width: auto;
    border: 1px solid var(--border-m);
    border-radius: 1.25rem;
    overflow: hidden;
  }
  #cc-main .cm--bar .cm__body,
  #cc-main .cm--bar .cm__links {
    width: 100%;
  }
  .legal-summary h2,
  .legal-section h2 { font-size: 1.05rem; }
}
@media (max-width: 480px) {
  .hero__actions  { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .cta-section__acts { flex-direction: column; align-items: center; }
  .status-card__actions { flex-direction: column; }
  .status-card__actions .btn { width: 100%; }
  .legal-summary,
  .legal-section,
  .legal-nav { padding: 1rem; }
  .legal-summary h2,
  .legal-section h2 { font-size: 1rem; margin-bottom: 0.75rem; }
  .legal-nav h2 { font-size: 0.875rem; margin-bottom: 0.75rem; }
  .legal-nav ul { gap: 0.35rem; }
  .legal-nav a { padding: 0.45rem 0.6rem; font-size: 0.9375rem; }
  .legal-article { gap: 1rem; }
  .legal-list { gap: 0.6rem; padding-left: 1.125rem; }
  .legal-section p + p { margin-top: 0.75rem; }
  .legal-consent__check { align-items: center; }
  .app-page { width: min(1400px, calc(100% - 1.5rem)); padding-inline: 0; }
  .pub-nav,
  .app-nav { padding-top: .5rem; }
  .pub-nav__inner,
  .app-nav__inner { width: min(100% - (2 * var(--page-gutter)), 1200px); padding-inline: .9rem; }
  .stats-bar__grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .legal-summary,
  .legal-section,
  .legal-nav { padding: 0.875rem; }
  .legal-list { padding-left: 1rem; }
  .legal-nav a { padding: 0.4rem 0.5rem; font-size: 0.875rem; }
  .legal-section p, .legal-list li { font-size: 0.9375rem; }
}