/* v4-tokens.css — V4 light-cyan-glass aesthetic, applied SaaS-wide.
 *
 * Source palette: login-v4.css (locked, 2026-05-19). This file extracts the
 * V4 tokens — two-tone cyan accent, frosted-glass surfaces, breathing halos,
 * Space Grotesk display + Inter body, 12-radius gradient buttons — and
 * applies them to every page rendering `_base.html` when `data-theme="light"`.
 *
 * Strategy: ADDITIVE only. Loads AFTER base.css + components.css +
 * v3-foundation.css so the V4 overrides win by source order at equal
 * specificity. Existing classnames (`.card`, `.eyebrow`, `.btn`, `.list`,
 * `.kpi`, `.nav-pill`) keep their structure — only colour, glass, gradient,
 * radius, and motion change.
 *
 * Hook points:
 *   :root[data-theme="light"] body                     — page background + halos
 *   :root[data-theme="light"] .topbar                  — frosted glass + V4 nav
 *   :root[data-theme="light"] .content .card           — glass card surface
 *   :root[data-theme="light"] .content .eyebrow        — V4 eyebrow chip
 *   :root[data-theme="light"] .btn--primary            — V4 gradient button
 *   :root[data-theme="light"] .kpi                     — glass KPI tile
 *   :root[data-theme="light"] .nav-pill                — glass status pill
 *   :root[data-theme="light"] input, select, textarea  — V4 form inputs
 *
 * Scope: only `:root[data-theme="light"]` and not `.lp-v4` (login is locked
 * to its own internal cascade — touching it from here would break the
 * brand-locked sign-in surface).
 *
 * 2026-05-20 — initial saas-rollout, take 2 (Captain-directed).
 */

/* ============================================================
   LIGHT-MODE V4 TOKEN OVERRIDES
   Override base.css's :root[data-theme="light"] block so the SaaS
   chrome paints in the V4 two-tone cyan rather than the muted
   #008C9E from the H1 fix. Contrast is preserved (5.22:1 against
   white for text uses via --accent-text).
   ============================================================ */
:root[data-theme="light"] {
  --font-display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* V4 two-tone cyan (WCAG AA verified — see login-v4.css comments) */
  --accent:        #0099B0;   /* primary fill / dots / borders */
  --accent-text:   #007885;   /* text on white — 5.22:1 (AA-all-text) */
  --accent-vivid:  #00B5D1;   /* button gradient top */
  --accent-bright: #00D4FF;   /* decorative glow only */
  --accent-dim:    #007885;
  --accent-soft:   #2A9FB4;
  --accent-glow:        rgba(0, 153, 176, 0.10);
  --accent-glow-2:      rgba(0, 153, 176, 0.20);
  --accent-glow-bright: rgba(0, 212, 255, 0.22);

  /* Glass surfaces — frosted, like login-v4 card */
  --glass-bg:        rgba(255, 255, 255, 0.72);
  --glass-bg-hover:  rgba(255, 255, 255, 0.86);
  --glass-border:    color-mix(in srgb, var(--accent) 28%, rgba(255, 255, 255, 0.5));
  --glass-border-hi: color-mix(in srgb, var(--accent) 55%, rgba(255, 255, 255, 0.8));
  --glass-blur:      saturate(160%) blur(14px);
  --glass-shadow:    0 6px 20px rgba(0, 0, 0, 0.06),
                     0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent);
  --glass-shadow-hi: 0 14px 44px color-mix(in srgb, var(--accent) 18%, transparent),
                     0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);

  /* Brighter, animated halos */
  --halo-1: radial-gradient(ellipse 70% 45% at 15% 0%,
              color-mix(in srgb, var(--accent-bright) 10%, transparent), transparent 60%);
  --halo-2: radial-gradient(ellipse 50% 40% at 90% 75%,
              color-mix(in srgb, var(--accent-vivid) 8%, transparent), transparent 60%);

  /* Soft drop-shadow for cards (lighter than dark theme) */
  --shadow-card: 0 6px 20px rgba(0, 0, 0, 0.06),
                 0 1px 4px rgba(0, 0, 0, 0.04);
}

/* ============================================================
   BODY HALOS — breathing, 22s drift (login-v4 detail #1)
   Skip on routes that opt out via `<body data-no-v4-halo>` so any
   page that doesn't want it can disable cleanly.
   ============================================================ */
:root[data-theme="light"] body::before {
  background: var(--halo-1), var(--halo-2);
  animation: v4-breathe 22s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  will-change: opacity, transform;
}
@keyframes v4-breathe {
  0%, 100% { opacity: 0.85; transform: scale(1) translate(0, 0); }
  50%      { opacity: 1;    transform: scale(1.04) translate(1%, -0.6%); }
}

/* ============================================================
   TOPBAR — V4 frosted glass with cyan tint
   ============================================================ */
:root[data-theme="light"] .topbar {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(170%) blur(16px);
  -webkit-backdrop-filter: saturate(170%) blur(16px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset,
              0 2px 14px rgba(0, 153, 176, 0.06);
}

:root[data-theme="light"] .brand {
  font-family: var(--font-display);
  letter-spacing: -0.005em;
}
:root[data-theme="light"] .brand__name { color: var(--text); }
:root[data-theme="light"] .brand__name .accent { color: var(--accent-text); }

:root[data-theme="light"] .topbar__nav .topnav-item {
  color: var(--text-dim);
  font-family: var(--font-display);
}
:root[data-theme="light"] .topbar__nav .topnav-item:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent-text);
}
:root[data-theme="light"] .topbar__nav .topnav-item.active {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent-text);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent);
}

/* Theme toggle — keep readable */
:root[data-theme="light"] .theme-toggle {
  border-color: var(--glass-border);
  color: var(--text-dim);
}
:root[data-theme="light"] .theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

/* Ask Niki trigger — translate to V4 chip */
:root[data-theme="light"] .niki-trigger {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
:root[data-theme="light"] .niki-trigger:hover {
  border-color: var(--accent);
  background: var(--glass-bg-hover);
  color: var(--accent-text);
}

/* View-switcher select */
:root[data-theme="light"] .view-switcher__select,
:root[data-theme="light"] .role-switcher__select {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  color: var(--text);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
:root[data-theme="light"] .view-switcher__select:hover,
:root[data-theme="light"] .role-switcher__select:hover {
  border-color: var(--accent);
}

/* Mobile drawer — frosted light */
:root[data-theme="light"] .topbar__drawer {
  background: rgba(255, 255, 255, 0.95);
  border-top-color: var(--glass-border);
}
:root[data-theme="light"] .topbar__burger {
  border-color: var(--glass-border);
}
:root[data-theme="light"] .topbar__burger-bar { background: var(--text); }
:root[data-theme="light"] .topbar__burger:hover { border-color: var(--accent); }

/* ============================================================
   CONTENT TYPOGRAPHY — V4 display headings
   ============================================================ */
:root[data-theme="light"] .content h1,
:root[data-theme="light"] .content h2,
:root[data-theme="light"] .content h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}
:root[data-theme="light"] .content h1 {
  color: var(--text);
  line-height: 1.12;
}
:root[data-theme="light"] .content h2 {
  color: var(--text);
  font-weight: 600;
}
:root[data-theme="light"] .content h1 .accent,
:root[data-theme="light"] .content h2 .accent,
:root[data-theme="light"] .content .hero-greeting__title .accent {
  color: var(--accent-text);
}

/* Body links — V4 cyan, AA */
:root[data-theme="light"] a {
  color: var(--accent-text);
}
:root[data-theme="light"] a:hover {
  color: var(--accent);
}

/* ============================================================
   CARDS — frosted glass with cyan rim
   ============================================================ */
:root[data-theme="light"] .content .card,
:root[data-theme="light"] .card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  transition: box-shadow 360ms cubic-bezier(0.22, 0.61, 0.36, 1),
              border-color 360ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
:root[data-theme="light"] .content .card:hover,
:root[data-theme="light"] .card:hover {
  border-color: var(--glass-border-hi);
}
:root[data-theme="light"] .content .card:focus-within,
:root[data-theme="light"] .card:focus-within {
  border-color: var(--glass-border-hi);
  box-shadow: var(--glass-shadow-hi);
}

/* Soft cyan top-rim — login-v4 signature */
:root[data-theme="light"] .content .card::before,
:root[data-theme="light"] .card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg,
              transparent 0%,
              var(--accent-bright) 50%,
              transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}

:root[data-theme="light"] .card__title {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
}
:root[data-theme="light"] .card__sub {
  color: var(--text-dim);
}

/* Card--accent — emphasised top rim */
:root[data-theme="light"] .card--accent {
  border-color: var(--glass-border-hi);
}
:root[data-theme="light"] .card--accent::before {
  opacity: 1;
}

/* ============================================================
   EYEBROW — V4 pill chip with two-tone gradient
   ============================================================ */
:root[data-theme="light"] .content .eyebrow,
:root[data-theme="light"] .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: linear-gradient(95deg,
              color-mix(in srgb, var(--accent) 8%, transparent) 0%,
              color-mix(in srgb, var(--accent-bright) 14%, transparent) 100%);
  color: var(--accent-text);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}
:root[data-theme="light"] .content .eyebrow::before,
:root[data-theme="light"] .eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow-bright);
  flex-shrink: 0;
}

/* ============================================================
   BUTTONS — V4 gradient primary (login-v4 detail)
   ============================================================ */
:root[data-theme="light"] .btn--primary {
  background: linear-gradient(180deg,
              var(--accent-vivid) 0%,
              var(--accent) 55%,
              var(--accent-text) 100%);
  color: #fff;
  border: 1px solid color-mix(in srgb, var(--accent-text) 45%, transparent);
  border-radius: var(--radius-btn, 12px);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.005em;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -1px 0 rgba(0, 0, 0, 0.10),
    0 1px 2px rgba(0, 0, 0, 0.08),
    0 0 0 1px color-mix(in srgb, var(--accent-text) 50%, transparent);
  transition: transform 200ms cubic-bezier(0.22, 0.61, 0.36, 1),
              box-shadow 240ms cubic-bezier(0.22, 0.61, 0.36, 1),
              filter 200ms ease;
}
:root[data-theme="light"] .btn--primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(0, 0, 0, 0.10),
    0 8px 24px color-mix(in srgb, var(--accent-bright) 30%, transparent),
    0 1px 2px rgba(0, 0, 0, 0.08),
    0 0 0 1px color-mix(in srgb, var(--accent-text) 60%, transparent);
}
:root[data-theme="light"] .btn--primary:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

/* Secondary / ghost — keep glass treatment */
:root[data-theme="light"] .btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text);
  border-radius: var(--radius-btn, 12px);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}
:root[data-theme="light"] .btn:hover {
  border-color: var(--accent);
  color: var(--accent-text);
  background: var(--glass-bg-hover);
}
:root[data-theme="light"] .btn--ghost {
  background: transparent;
}
:root[data-theme="light"] .btn--ghost:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-color: color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--accent-text);
}
:root[data-theme="light"] .btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-glow-2),
              0 0 0 1px var(--accent-text);
}

/* ============================================================
   KPIs — frosted glass tiles
   ============================================================ */
:root[data-theme="light"] .kpi {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  transition: transform 220ms cubic-bezier(0.22, 0.61, 0.36, 1),
              border-color 220ms cubic-bezier(0.22, 0.61, 0.36, 1),
              box-shadow 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
:root[data-theme="light"] .kpi:hover {
  border-color: var(--glass-border-hi);
  transform: translateY(-1px);
  box-shadow: var(--glass-shadow-hi);
}
:root[data-theme="light"] .kpi::before {
  content: "";
  position: absolute;
  top: 0;
  left: 18%;
  right: 18%;
  height: 1px;
  background: linear-gradient(90deg,
              transparent 0%,
              var(--accent-bright) 50%,
              transparent 100%);
  opacity: 0.55;
  pointer-events: none;
}
:root[data-theme="light"] .kpi__label {
  font-family: var(--font-display);
  color: var(--text-muted);
  font-weight: 500;
}
:root[data-theme="light"] .kpi__value {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
}
:root[data-theme="light"] .kpi__delta.up {
  color: var(--green);
}
:root[data-theme="light"] .kpi__delta.down {
  color: var(--red);
}

/* KPI-mini variant (used on dashboard) */
:root[data-theme="light"] .kpi-mini {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
}
:root[data-theme="light"] .kpi-mini__label {
  color: var(--text-muted);
  font-family: var(--font-display);
}
:root[data-theme="light"] .kpi-mini__value {
  color: var(--text);
  font-family: var(--font-display);
}

/* ============================================================
   PILLS — V4 glass pill
   ============================================================ */
:root[data-theme="light"] .nav-pill {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-dim);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
:root[data-theme="light"] .nav-pill--accent {
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-card));
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
}
:root[data-theme="light"] .nav-pill--live {
  background: color-mix(in srgb, var(--green) 12%, var(--bg-card));
  color: var(--green);
  border-color: color-mix(in srgb, var(--green) 38%, transparent);
}
:root[data-theme="light"] .nav-pill--warn {
  background: color-mix(in srgb, var(--amber) 12%, var(--bg-card));
  color: var(--amber);
  border-color: color-mix(in srgb, var(--amber) 38%, transparent);
}
:root[data-theme="light"] .nav-pill--danger {
  background: color-mix(in srgb, var(--red) 12%, var(--bg-card));
  color: var(--red);
  border-color: color-mix(in srgb, var(--red) 38%, transparent);
}

/* ============================================================
   LIST ROWS — soft hover, frosted divider
   ============================================================ */
:root[data-theme="light"] .list__row {
  border-bottom-color: color-mix(in srgb, var(--accent) 8%, var(--border));
  transition: background 180ms ease, padding-left 220ms ease;
}
:root[data-theme="light"] .list__row:hover {
  background: color-mix(in srgb, var(--accent) 4%, transparent);
  padding-left: calc(var(--row-px, 1rem) + 6px);
}

/* ============================================================
   FORMS — V4 inputs
   ============================================================ */
:root[data-theme="light"] input[type="text"],
:root[data-theme="light"] input[type="email"],
:root[data-theme="light"] input[type="number"],
:root[data-theme="light"] input[type="password"],
:root[data-theme="light"] input[type="search"],
:root[data-theme="light"] input[type="tel"],
:root[data-theme="light"] input[type="date"],
:root[data-theme="light"] input[type="time"],
:root[data-theme="light"] textarea,
:root[data-theme="light"] select {
  background: var(--bg-card-hi);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-input);
  color: var(--text);
  font-family: var(--font-body);
  transition: border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}
:root[data-theme="light"] input[type="text"]:hover,
:root[data-theme="light"] input[type="email"]:hover,
:root[data-theme="light"] input[type="search"]:hover,
:root[data-theme="light"] input[type="password"]:hover,
:root[data-theme="light"] textarea:hover,
:root[data-theme="light"] select:hover {
  border-color: var(--accent-soft);
  background: var(--bg-card);
}
:root[data-theme="light"] input[type="text"]:focus,
:root[data-theme="light"] input[type="email"]:focus,
:root[data-theme="light"] input[type="search"]:focus,
:root[data-theme="light"] input[type="password"]:focus,
:root[data-theme="light"] textarea:focus,
:root[data-theme="light"] select:focus {
  outline: none;
  background: var(--bg-card);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow-2),
              0 0 0 1px var(--accent),
              0 0 16px color-mix(in srgb, var(--accent-bright) 18%, transparent);
}

/* ============================================================
   TABLES — V4 soft borders + frosted header
   ============================================================ */
:root[data-theme="light"] table.list,
:root[data-theme="light"] .card table {
  border-collapse: collapse;
  width: 100%;
}
:root[data-theme="light"] table.list thead th,
:root[data-theme="light"] .card table thead th {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.65rem 0.85rem;
  text-align: left;
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  border-bottom: 1px solid var(--glass-border);
}
:root[data-theme="light"] table.list tbody td,
:root[data-theme="light"] .card table tbody td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 8%, var(--border));
  vertical-align: top;
  color: var(--text);
}
:root[data-theme="light"] table.list tbody tr:hover,
:root[data-theme="light"] .card table tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 4%, transparent);
}

/* ============================================================
   FOCUS RINGS — universal AA-grade ring
   ============================================================ */
:root[data-theme="light"] a:focus-visible,
:root[data-theme="light"] button:focus-visible:not(.btn--primary),
:root[data-theme="light"] .topnav-item:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-glow-2),
              0 0 0 1px var(--accent-text);
  border-radius: 6px;
}

/* ============================================================
   MOBILE (≤540px) — phone-first courtesy
   ============================================================ */
@media (max-width: 540px) {
  :root[data-theme="light"] .content {
    padding: 1.1rem 0.95rem 1.5rem;
  }
  :root[data-theme="light"] .content .card,
  :root[data-theme="light"] .card {
    border-radius: 18px;
  }
  :root[data-theme="light"] .content h1 {
    font-size: 1.5rem;
  }
  :root[data-theme="light"] .kpi-strip {
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: none;
  }
  :root[data-theme="light"] .kpi-strip::-webkit-scrollbar { display: none; }

  /* Wide tables (staff roster, dashboard splits) — let users swipe them
     instead of overflowing the viewport. Card already clips overflow via
     border-radius so this only affects the table itself. */
  :root[data-theme="light"] .card table.list,
  :root[data-theme="light"] .card table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  :root[data-theme="light"] .card table.list thead th,
  :root[data-theme="light"] .card table thead th,
  :root[data-theme="light"] .card table.list tbody td,
  :root[data-theme="light"] .card table tbody td {
    white-space: normal;
  }
}

/* ============================================================
   REDUCED MOTION — honour user pref
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  :root[data-theme="light"] body::before {
    animation: none;
  }
  :root[data-theme="light"] .card,
  :root[data-theme="light"] .kpi,
  :root[data-theme="light"] .btn,
  :root[data-theme="light"] .btn--primary,
  :root[data-theme="light"] .list__row,
  :root[data-theme="light"] input,
  :root[data-theme="light"] select,
  :root[data-theme="light"] textarea {
    transition: none;
  }
  :root[data-theme="light"] .btn--primary:hover,
  :root[data-theme="light"] .kpi:hover,
  :root[data-theme="light"] .list__row:hover {
    transform: none;
    padding-left: var(--row-px, 1rem);
  }
}

/* ============================================================
   DON'T BLEED INTO LOGIN — .lp-v4 has its own self-contained
   cascade. Anything inside .lp-v4 should NOT be overridden by
   the rules above. Login is locked.
   ============================================================ */
:root[data-theme="light"] .lp-v4 a,
:root[data-theme="light"] .lp-v4 .btn,
:root[data-theme="light"] .lp-v4 input,
:root[data-theme="light"] .lp-v4 select {
  /* deliberately empty — .lp-v4 internal rules win by being later
     in source order within login-v4.css; we just declare intent. */
}
