/* ==========================================================================
   Жизнесвод — Design System v0.1

   The shared visual foundation: tokens, base typography, the Liquid Glass
   surface language and the reusable primitives (Button, Field/TextInput,
   Badge, Disclosure, FieldError, PageShell, PublicHeader, AuthCard).

   Rules of this file
   - Every colour, radius, shadow, blur, spacing and type size used by a
     primitive is a token declared once in :root below. Screens never invent
     one-off values; they consume tokens.
   - Light theme only (`color-scheme: light`).
   - No external resources: system font stack, no @import, no url(http...).
     The app's CSP is `style-src 'self'` -- no inline styles anywhere.
   - Glass is used sparingly (header, auth card, badges, secondary buttons,
     menus). Content surfaces stay near-opaque so text is always readable.
     Every glass surface has an opaque fallback (see "Glass fallbacks").
   ========================================================================== */

:root {
  color-scheme: light;

  /* ---- colour: page & text ------------------------------------------- */
  --color-bg: #f5f7fb;
  --color-bg-subtle: #eef2f8;
  --color-surface: #ffffff;
  --color-text: #101a2c;
  --color-text-secondary: #43526a;
  --color-text-muted: #5b6a80;

  /* ---- colour: lines -------------------------------------------------- */
  --color-border: rgba(16, 26, 44, 0.10);
  --color-border-strong: rgba(16, 26, 44, 0.20);
  --color-divider: rgba(16, 26, 44, 0.08);
  /* Form-control outline: the only thing marking a near-white field, so it meets
     WCAG 1.4.11 (>= 3:1, measured 3.09 on the worst-case glass backdrop). */
  --color-control-border: rgba(16, 26, 44, 0.48);
  --color-control-border-hover: rgba(16, 26, 44, 0.62);

  /* ---- colour: accent (deep petrol blue-green) ------------------------ */
  --color-accent: #1d6478;
  --color-accent-hover: #17536a;
  --color-accent-strong: #124658;
  --color-accent-tint: rgba(29, 100, 120, 0.10);
  --color-accent-tint-border: rgba(29, 100, 120, 0.28);
  --color-on-accent: #ffffff;
  --color-focus: #2a7f97;

  /* ---- colour: state -------------------------------------------------- */
  --color-danger: #b42318;
  --color-danger-strong: #8f1c12;
  --color-danger-tint: rgba(180, 35, 24, 0.07);
  --color-danger-border: rgba(180, 35, 24, 0.35);
  --color-success: #067647;
  --color-success-tint: rgba(6, 118, 71, 0.09);
  --color-warn: #8a4b0f;

  /* ---- atmosphere (page background glows) ---------------------------- */
  /* cool-only atmosphere everywhere (no warm glow): stronger on the public
     auth pages, calmer behind the authenticated app */
  --glow-sky: rgba(96, 168, 214, 0.26);
  --glow-sky-soft: rgba(130, 184, 226, 0.15);
  --glow-haze: rgba(150, 160, 250, 0.09);
  --glow-card: rgba(96, 170, 214, 0.38);
  --glow-card-soft: rgba(150, 166, 244, 0.13);
  --arch-line: rgba(29, 100, 120, 0.13);

  /* ---- liquid glass ---------------------------------------------------- */
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-bg-strong: rgba(255, 255, 255, 0.80);
  --glass-bg-soft: rgba(255, 255, 255, 0.42);
  --glass-border: rgba(255, 255, 255, 0.72);
  --glass-edge: rgba(16, 26, 44, 0.07);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.95);
  /* cool-white / light-blue glass for small insight surfaces */
  --glass-bg-cool: rgba(226, 241, 251, 0.40);
  --glass-border-cool: rgba(96, 164, 200, 0.20);
  --glass-bg-subtle: rgba(255, 255, 255, 0.46);
  --glass-edge-soft: rgba(16, 26, 44, 0.05);
  --glass-card-top: rgba(255, 255, 255, 0.64);
  --glass-card-bottom: rgba(255, 255, 255, 0.42);
  --glass-inner-glow: inset 0 0 28px rgba(255, 255, 255, 0.30);
  /* floating navigation (dock): a slightly clearer pane than the header glass */
  --glass-dock: rgba(255, 255, 255, 0.60);
  --shadow-dock: 0 1px 2px rgba(16, 26, 44, 0.05), 0 12px 28px -12px rgba(16, 26, 44, 0.20);
  --dock-hover: rgba(16, 26, 44, 0.05);
  --dock-add-bg:
    linear-gradient(180deg, rgba(255, 255, 255, 0.20) 0%, rgba(255, 255, 255, 0) 52%),
    linear-gradient(180deg, #267a90 0%, var(--color-accent) 100%);
  --dock-add-ring: 0 0 0 3px rgba(255, 255, 255, 0.60);
  --blur-glass: 18px;
  --blur-glass-lg: 28px;
  --blur-glass-sm: 12px;
  --saturate-glass: 1.4;

  /* ---- radii ----------------------------------------------------------- */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* ---- shadows (layered, low-contrast) -------------------------------- */
  --shadow-1: 0 1px 2px rgba(16, 26, 44, 0.05), 0 1px 1px rgba(16, 26, 44, 0.03);
  --shadow-2: 0 2px 4px rgba(16, 26, 44, 0.04), 0 8px 22px -6px rgba(16, 26, 44, 0.08);
  --shadow-3: 0 1px 2px rgba(16, 26, 44, 0.04), 0 14px 34px -10px rgba(16, 26, 44, 0.12),
    0 36px 72px -28px rgba(30, 84, 112, 0.22);
  /* restrained layered depth for the large public glass card */
  --shadow-glass: 0 1px 2px rgba(16, 26, 44, 0.04), 0 10px 26px -12px rgba(16, 26, 44, 0.10),
    0 30px 60px -34px rgba(48, 92, 140, 0.16);
  --shadow-accent: 0 1px 2px rgba(18, 70, 88, 0.30), 0 8px 20px -6px rgba(29, 100, 120, 0.42);
  --shadow-accent-hover: 0 2px 4px rgba(18, 70, 88, 0.30), 0 12px 26px -6px rgba(29, 100, 120, 0.50);
  --ring-focus: 0 0 0 4px rgba(42, 127, 151, 0.28);
  --ring-danger: 0 0 0 4px rgba(180, 35, 24, 0.16);

  /* ---- spacing (4px base) --------------------------------------------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* ---- typography ------------------------------------------------------ */
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.0625rem;
  --text-lg: 1.1875rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.125rem;
  --text-display: clamp(2.25rem, 1.4rem + 3.4vw, 3.9rem);
  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-body: 1.55;
  --tracking-display: -0.032em;
  --tracking-heading: -0.02em;

  /* ---- controls --------------------------------------------------------- */
  --control-height: 3.125rem; /* 50px inputs and large buttons */
  --control-height-sm: 2.5rem; /* 40px compact buttons */
  --touch-target: 2.75rem; /* 44px minimum for anything tappable */

  /* ---- layout ------------------------------------------------------------ */
  /* authenticated app shell: 1024px outer = a 960px content column at desktop widths */
  --container: 1024px;
  --container-public: 1240px;
  --gutter: 2rem;
  --auth-card-width: 460px;

  /* ---- floating navigation (dock) -------------------------------------- */
  --dock-max-width: 25rem;
  --dock-height: 4.375rem; /* 56px + control + 2 x 6px padding + 2px border */
  --dock-padding: 0.375rem;
  --dock-bottom: var(--space-4); /* gap between the dock and the viewport bottom */
  --dock-add-size: 3.5rem; /* the centre + control */
  --dock-add-lift: 0.625rem; /* how far + rises above the dock's baseline */
  /* Page bottom padding: the dock's footprint plus breathing room. */
  --dock-clearance: calc(var(--dock-height) + var(--dock-bottom) + var(--dock-add-lift) + var(--space-8) + env(safe-area-inset-bottom, 0px));

  /* ---- motion ------------------------------------------------------------ */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --duration-fast: 140ms;
  --duration: 180ms;
  --duration-slow: 220ms;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* The canvas colour lives on <html> only: a painted <body> background would
   cover the atmosphere layer (body::before, z-index -1) below. */
html { background: var(--color-bg); }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Atmosphere: soft cool glows behind everything. A fixed pseudo-element
   (not background-attachment: fixed) so it stays cheap on mobile. No noise,
   no animation. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(64rem 42rem at 4% -8%, var(--glow-sky-soft), transparent 66%),
    radial-gradient(54rem 38rem at 104% 2%, var(--glow-haze), transparent 64%),
    radial-gradient(60rem 42rem at 96% 110%, var(--glow-sky-soft), transparent 68%),
    var(--color-bg);
}

/* Public state (login / registration): a cool, quiet atmosphere. Sky-blue glow
   top-left, a whisper of lavender top-right, a faint sky haze bottom-right; no
   warm region. The authenticated app uses the same cool layout, one step calmer
   (the base atmosphere above). */
body.auth-only::before {
  background:
    radial-gradient(64rem 42rem at 4% -8%, var(--glow-sky), transparent 66%),
    radial-gradient(54rem 38rem at 104% 2%, var(--glow-haze), transparent 64%),
    radial-gradient(60rem 42rem at 96% 110%, var(--glow-sky-soft), transparent 68%),
    var(--color-bg);
}

::selection {
  background: rgba(42, 127, 151, 0.22);
}

a {
  color: var(--color-accent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover { color: var(--color-accent-hover); }

h1, h2, h3 {
  color: var(--color-text);
  line-height: var(--leading-snug);
}

/* Keyboard focus: visible everywhere, never removed without a replacement. */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Button
   .btn + one variant. Sizes: default (44px), .btn-lg (50px). .btn-block = full width.
   Legacy app classes (.cta, button.primary, .logout-btn, ...) are mapped onto
   these in styles.css.
   -------------------------------------------------------------------------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target);
  padding: 0 var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font: inherit;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.005em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--duration-fast) var(--ease),
    box-shadow var(--duration) var(--ease),
    background-color var(--duration) var(--ease),
    border-color var(--duration) var(--ease),
    color var(--duration) var(--ease);
}

.btn-lg { min-height: var(--control-height); padding: 0 var(--space-6); font-size: var(--text-md); }
.btn-block { display: flex; width: 100%; }

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
  transform: none;
}

/* Primary: luminous tinted glass. Clear contrast (white on deep petrol). */
.btn-primary {
  color: var(--color-on-accent);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.20) 0%, rgba(255, 255, 255, 0) 52%),
    linear-gradient(180deg, #267a90 0%, var(--color-accent) 100%);
  border-color: rgba(18, 70, 88, 0.55);
  box-shadow: var(--shadow-accent), inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

.btn-primary:hover:not(:disabled):not([aria-disabled="true"]) {
  color: var(--color-on-accent);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.24) 0%, rgba(255, 255, 255, 0) 52%),
    linear-gradient(180deg, #21708a 0%, var(--color-accent-hover) 100%);
  box-shadow: var(--shadow-accent-hover), inset 0 1px 0 rgba(255, 255, 255, 0.40);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(0);
  box-shadow: var(--shadow-accent), inset 0 1px 0 rgba(255, 255, 255, 0.20);
}

/* Secondary: translucent glass with a restrained border. */
.btn-secondary {
  color: var(--color-text);
  background: var(--glass-bg-strong);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-1), var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
}

.btn-secondary:hover:not(:disabled):not([aria-disabled="true"]) {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(16, 26, 44, 0.28);
  box-shadow: var(--shadow-2), var(--glass-highlight);
  transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(0);
  box-shadow: var(--shadow-1), var(--glass-highlight);
}

/* Ghost: navigation / tertiary only. */
.btn-ghost {
  color: var(--color-text-secondary);
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled):not([aria-disabled="true"]) {
  color: var(--color-text);
  background: rgba(16, 26, 44, 0.06);
}

.btn-danger {
  color: var(--color-danger);
  background: var(--glass-bg-strong);
  border-color: var(--color-danger-border);
}

.btn-danger:hover:not(:disabled):not([aria-disabled="true"]) {
  color: var(--color-on-accent);
  background: var(--color-danger);
  border-color: var(--color-danger);
}

/* --------------------------------------------------------------------------
   Field / TextInput / PasswordInput / FieldError
   <div class="field"> <label class="field-label"> <input class="input"> hint / error
   -------------------------------------------------------------------------- */

.field { display: flex; flex-direction: column; gap: var(--space-2); }

.field-label {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0;
}

.input {
  width: 100%;
  min-height: var(--control-height);
  padding: 0 var(--space-4);
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-base); /* >= 16px: no iOS zoom-on-focus */
  line-height: 1.3;
  box-shadow: inset 0 1px 2px rgba(16, 26, 44, 0.04);
  transition:
    border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease),
    background-color var(--duration) var(--ease);
}

.input::placeholder { color: var(--color-text-muted); opacity: 0.8; }

.input:hover { border-color: var(--color-control-border-hover); }

.input:focus,
.input:focus-visible {
  outline: none;
  border-color: var(--color-focus);
  background: #ffffff;
  box-shadow: var(--ring-focus);
}

.input[aria-invalid="true"] {
  border-color: var(--color-danger);
  background: #ffffff;
}

.input[aria-invalid="true"]:focus,
.input[aria-invalid="true"]:focus-visible {
  border-color: var(--color-danger);
  box-shadow: var(--ring-danger);
}

.input:disabled { opacity: 0.6; cursor: not-allowed; }

.field-hint {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.field-error {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-danger);
}

.field-error::before {
  content: "!";
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.08rem;
  border-radius: 50%;
  background: var(--color-danger);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1;
}

/* PasswordInput: the show/hide control lives inside the field. */
.input-affix { position: relative; display: block; }
.input-affix .input { padding-right: 5.5rem; }

.input-affix-btn {
  position: absolute;
  top: 50%;
  right: 0.375rem;
  transform: translateY(-50%);
  min-height: 2.25rem;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-accent);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

.input-affix-btn:hover { background: var(--color-accent-tint); color: var(--color-accent-hover); }

/* Form-level message (server errors, notices). */
.form-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-danger-border);
  border-radius: var(--radius-md);
  background: var(--color-danger-tint);
  color: var(--color-danger-strong);
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

/* --------------------------------------------------------------------------
   Badge / EarlyAccessBadge
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  box-shadow: var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
}

.badge-accent {
  border-color: var(--color-accent-tint-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), var(--color-accent-tint));
  color: var(--color-accent-strong);
  font-weight: 600;
}

.badge-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29, 100, 120, 0.16);
}

/* --------------------------------------------------------------------------
   Disclosure (native <details>): unobtrusive, keyboard-operable, no JS.
   -------------------------------------------------------------------------- */

.disclosure {
  margin: 0;
  border-top: 1px solid var(--color-divider);
}

.disclosure > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--touch-target);
  padding: var(--space-2) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  list-style: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--duration) var(--ease);
}

.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::marker { content: ""; }

.disclosure > summary::after {
  content: "";
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.25rem;
  border-right: 1.75px solid currentColor;
  border-bottom: 1.75px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform var(--duration) var(--ease);
}

.disclosure > summary:hover { color: var(--color-text); }

.disclosure[open] > summary::after { transform: translateY(1px) rotate(-135deg); }

.disclosure-body {
  padding: var(--space-1) 0 var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: 1.55;
}

.disclosure[open] > .disclosure-body {
  animation: disclosure-in var(--duration-slow) var(--ease);
}

.disclosure-body p { margin: 0 0 var(--space-3); }
.disclosure-body ul { margin: 0; padding-left: 1.1rem; }
.disclosure-body li { margin: 0 0 var(--space-2); padding-left: 0.15rem; }
.disclosure-body li::marker { color: var(--color-text-muted); }

@keyframes disclosure-in {
  from { opacity: 0; transform: translateY(-2px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   PageShell (public state) + PublicHeader
   `body.auth-only` is the public/unauthenticated state: the app header is
   replaced by the public header and the shell spans the full viewport.
   -------------------------------------------------------------------------- */

body.auth-only .shell {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: none;
  padding: 0;
  /* Decorative glows/arcs may bleed past the container; never let them create
     horizontal scroll. `clip` (no scroll container) where supported. */
  overflow-x: hidden;
  overflow-x: clip;
}

body.auth-only .main { min-height: 0; display: flex; }

.public-header {
  width: 100%;
  max-width: var(--container-public);
  margin: 0 auto;
  padding: var(--space-4) var(--gutter) 0;
}

.public-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 3.25rem;
  padding: 0.25rem 0.5rem 0.25rem var(--space-5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: var(--glass-bg-subtle);
  box-shadow: 0 0 0 1px var(--glass-edge-soft), var(--shadow-1), var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass)) saturate(var(--saturate-glass));
}

.wordmark {
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 650;
  letter-spacing: var(--tracking-heading);
  text-decoration: none;
  white-space: nowrap;
}

.wordmark:hover { color: var(--color-text); }

/* The header action is a compact secondary button (40px; 44px on phones). */
.public-header-bar .btn {
  min-height: var(--control-height-sm);
  padding: 0 var(--space-4);
  font-size: var(--text-sm);
}

.public-main {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: var(--container-public);
  margin: 0 auto;
  padding: var(--space-8) var(--gutter) var(--space-16);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, var(--auth-card-width));
  align-items: center;
  column-gap: clamp(3rem, 7vw, 7rem);
  row-gap: var(--space-8);
}

/* Soft glow anchored behind the card column so the glass has something to
   refract. Decorative: no content, no animation. */
.public-main::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -9rem;
  top: 50%;
  width: 46rem;
  height: 40rem;
  transform: translateY(-50%);
  pointer-events: none;
  background:
    radial-gradient(closest-side at 42% 42%, var(--glow-card), transparent 100%),
    radial-gradient(closest-side at 68% 72%, var(--glow-card-soft), transparent 100%);
}

/* ---- hero (brand proposition) ------------------------------------------- */

.hero { position: relative; max-width: 36rem; }

/* "Свод" = vault/arch: a faint set of concentric arcs behind the hero. Pure
   CSS, decorative (aria-hidden), masked so it fades out before the text. */
.hero-arch {
  position: absolute;
  z-index: -1;
  left: 50%;
  bottom: -9rem;
  width: 44rem;
  height: 44rem;
  transform: translateX(-56%);
  pointer-events: none;
  background: repeating-radial-gradient(
    circle at 50% 100%,
    transparent 0,
    transparent 3.4rem,
    var(--arch-line) 3.4rem,
    var(--arch-line) calc(3.4rem + 1px)
  );
  -webkit-mask-image: radial-gradient(circle at 50% 100%, #000 0, transparent 68%);
  mask-image: radial-gradient(circle at 50% 100%, #000 0, transparent 68%);
}

.hero-title {
  margin: 0 0 var(--space-6);
  font-size: var(--text-display);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  color: var(--color-text);
}

.hero-title { text-wrap: balance; }
.hero-title span { display: block; }
.hero-title .hero-title-soft { color: var(--color-accent); }

/* InsightCard: the picked brand line (BRAND_LINES in app.js, chosen once per
   page load) as a small standalone Liquid Glass card under the hero text.
   Static: no motion, not interactive. The phrase always reserves
   --insight-lines lines, so the card is the same size whichever phrase is
   picked and the composition never shifts. */
.insight-card {
  --insight-lines: 2;
  width: 100%;
  max-width: 27rem;
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--glass-border-cool);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--glass-bg-soft) 0%, var(--glass-bg-cool) 100%);
  box-shadow: var(--shadow-1), var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--blur-glass-sm)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass-sm)) saturate(var(--saturate-glass));
  text-align: left;
}

.insight-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.insight-mark { flex: none; color: var(--color-accent); opacity: 0.75; }

.insight-text {
  margin: 0;
  min-height: calc(var(--insight-lines) * 1.45em);
  font-size: var(--text-md);
  font-style: italic;
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-text);
  text-wrap: balance;
}

.hero-lede {
  margin: 0 0 var(--space-4);
  max-width: 30rem;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-8);
  padding: 0;
  list-style: none;
}

/* The chips are a quiet taxonomy row, far less prominent than the insight card:
   no blur, no highlight, a hairline and muted text. */
.hero-points .badge {
  padding: 0.1rem 0.65rem;
  border-color: var(--glass-edge-soft);
  background: var(--glass-bg-soft);
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 400;
}

/* ---- AuthCard ------------------------------------------------------------ */

.auth-card {
  /* Field outlines inside the translucent card are drawn over a tinted, glowing
     backdrop, so they are a step firmer here (measured >= 3:1 on the rendered
     pixels, WCAG 1.4.11). Scoped to the card: the app's own inputs are unchanged. */
  --color-control-border: rgba(16, 26, 44, 0.60);
  --color-control-border-hover: rgba(16, 26, 44, 0.72);
  width: 100%;
  padding: var(--space-10);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--glass-card-top) 0%, var(--glass-card-bottom) 100%);
  box-shadow:
    0 0 0 1px var(--glass-edge-soft), var(--shadow-glass), var(--glass-highlight),
    var(--glass-inner-glow);
  -webkit-backdrop-filter: blur(var(--blur-glass-lg)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass-lg)) saturate(var(--saturate-glass));
}

.auth-card-head { margin: 0 0 var(--space-6); }

.auth-card h1 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: var(--tracking-heading);
}

.auth-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin: 0;
}

.auth-form .btn-block { margin-top: var(--space-2); }

/* Helper text on the translucent card uses the secondary tone (measured on the
   rendered pixels): the muted tone was only ~4.5:1 over the blue glow. */
.auth-card .field-hint { color: var(--color-text-secondary); }

/* The alert slot sits above the form (outside its flex gap). */
.auth-card .form-alert { margin: 0 0 var(--space-5); }

.auth-alt {
  margin: var(--space-6) 0 var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
}

.auth-alt a { font-weight: 600; }
.auth-alt:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   FloatingNav (the authenticated "dock")
   A compact Liquid Glass capsule floating above the bottom edge, centred, never
   touching the screen edges: four destinations and a raised centre "+" (the
   create action). Markup lives in index.html: `.dock` > `.dock-item` x2,
   `.dock-add`, `.dock-item` x2; app.js marks the current one with `.active` and
   `aria-current`. Glass is used for the control only -- content stays opaque.
   -------------------------------------------------------------------------- */

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: calc(var(--dock-bottom) + env(safe-area-inset-bottom, 0px));
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) var(--dock-add-size) repeat(2, minmax(0, 1fr));
  align-items: center;
  column-gap: var(--space-1);
  width: min(var(--dock-max-width), calc(100% - 2 * var(--space-3)));
  min-height: var(--dock-height);
  margin: 0 auto;
  padding: var(--dock-padding);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  background: var(--glass-dock);
  box-shadow: 0 0 0 1px var(--glass-edge), var(--shadow-dock), var(--glass-highlight);
  -webkit-backdrop-filter: blur(var(--blur-glass-lg)) saturate(var(--saturate-glass));
  backdrop-filter: blur(var(--blur-glass-lg)) saturate(var(--saturate-glass));
}

.dock-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 3.25rem;
  padding: var(--space-1) 0;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

@media (hover: hover) {
  .dock-item:hover { background: var(--dock-hover); color: var(--color-text); }
}

/* Current destination: a quiet tint and the accent colour -- no second shape. */
.dock-item.active,
.dock-item.active:hover {
  background: var(--color-accent-tint);
  color: var(--color-accent-strong);
}

.dock-icon {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dock-label { display: block; white-space: nowrap; }

/* The create action: a circular accent-glass control that rises slightly above
   the capsule, so it reads as the primary action of the bar. */
.dock-add {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--dock-add-size);
  height: var(--dock-add-size);
  border: 1px solid rgba(18, 70, 88, 0.55);
  border-radius: 50%;
  color: var(--color-on-accent);
  background: var(--dock-add-bg);
  box-shadow: var(--dock-add-ring), var(--shadow-accent), inset 0 1px 0 rgba(255, 255, 255, 0.34);
  transform: translateY(calc(-1 * var(--dock-add-lift)));
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--duration-fast) var(--ease),
    box-shadow var(--duration) var(--ease);
}

.dock-icon-add {
  width: 1.625rem;
  height: 1.625rem;
  stroke-width: 2.25;
}

@media (hover: hover) {
  .dock-add:hover {
    color: var(--color-on-accent);
    box-shadow: var(--dock-add-ring), var(--shadow-accent-hover), inset 0 1px 0 rgba(255, 255, 255, 0.40);
    transform: translateY(calc(-1 * var(--dock-add-lift) - 1px));
  }
}

.dock-add:active { transform: translateY(calc(-1 * var(--dock-add-lift))) scale(0.97); }

/* Composing a record is the current screen: keep the same control, add a ring. */
.dock-add.active {
  box-shadow: var(--dock-add-ring), 0 0 0 5px var(--color-accent-tint-border), var(--shadow-accent),
    inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

/* --------------------------------------------------------------------------
   Responsive
   >= 1200 : full two-area composition
   <  1000 : single column (tablet portrait), hero above the card
   <  600  : phone -- only the tagline is kept above the form
   -------------------------------------------------------------------------- */

@media (max-width: 999px) {
  :root { --gutter: 1.5rem; }

  .public-main {
    grid-template-columns: minmax(0, var(--auth-card-width));
    justify-content: center;
    align-items: start;
    /* Rows are content-sized: on a page shorter than the viewport (e.g. login on
       a tall phone) spare height falls below the form instead of being stretched
       into the gap between the hero and the card. */
    align-content: start;
    row-gap: var(--space-8);
    padding-top: var(--space-6);
  }

  .public-main::before { right: 50%; transform: translate(50%, -50%); top: 62%; width: 34rem; height: 30rem; }
  .hero-arch { display: none; }
  .hero { max-width: none; text-align: center; }
  .hero-title { font-size: clamp(2rem, 1.1rem + 3.6vw, 2.75rem); }
  .insight-card, .hero-lede { margin-left: auto; margin-right: auto; }
  .hero-points { justify-content: center; }
}

@media (max-width: 599px) {
  :root { --gutter: 1.25rem; }

  /* The glows are sized in rem, so on a phone they cover most of the screen:
     keep them fainter there. */
  body.auth-only { --glow-sky: rgba(96, 168, 214, 0.17); --glow-sky-soft: rgba(130, 184, 226, 0.10); --glow-card: rgba(96, 170, 214, 0.28); }

  .public-header { padding-top: var(--space-3); }
  .public-header-bar { padding-left: var(--space-4); }
  .public-header-bar .btn { min-height: var(--touch-target); }

  .public-main { padding-top: var(--space-4); padding-bottom: var(--space-10); row-gap: var(--space-6); }

  .hero { text-align: left; }
  .hero-title { margin-bottom: 0; font-size: 1.75rem; line-height: 1.15; }
  .hero-lede, .hero-points { display: none; }
  .insight-card { max-width: none; margin: var(--space-3) 0 0; padding: var(--space-3) var(--space-4); }
  .insight-text { font-size: var(--text-base); }
  .public-main::before { width: 22rem; height: 24rem; top: 66%; }

  .auth-card { padding: var(--space-6) var(--space-5); border-radius: var(--radius-lg); }
  .auth-card h1 { font-size: var(--text-2xl); }
}

/* The longest approved phrase wraps to 3 lines inside the card up to 365px
   (measured: 365px needs 3, 370px needs 2); 369px is the conservative limit,
   so that much room is reserved. */
@media (max-width: 369px) {
  .insight-card { --insight-lines: 3; }
}

@media (max-width: 359px) {
  .public-header-bar .btn { padding: 0 var(--space-3); font-size: var(--text-sm); }
}

/* --------------------------------------------------------------------------
   Glass fallbacks & user preferences
   -------------------------------------------------------------------------- */

/* No backdrop-filter: make translucent surfaces near-opaque so nothing that
   relied on blur behind it becomes hard to read. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.94);
    --glass-bg-strong: rgba(255, 255, 255, 0.97);
    --glass-bg-soft: rgba(255, 255, 255, 0.90);
    --glass-bg-cool: rgba(232, 244, 251, 0.96);
    --glass-bg-subtle: rgba(255, 255, 255, 0.94);
    --glass-card-top: rgba(255, 255, 255, 0.97);
    --glass-card-bottom: rgba(255, 255, 255, 0.95);
    --glass-dock: rgba(255, 255, 255, 0.96);
  }
  .auth-card { background: rgba(255, 255, 255, 0.96); }
  .insight-card { background: var(--glass-bg-cool); }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.96);
    --glass-bg-strong: #ffffff;
    --glass-bg-soft: rgba(255, 255, 255, 0.92);
    --glass-bg-cool: rgba(232, 244, 251, 0.98);
    --glass-bg-subtle: rgba(255, 255, 255, 0.97);
    --glass-card-top: #ffffff;
    --glass-card-bottom: #ffffff;
    --glass-dock: rgba(255, 255, 255, 0.97);
  }
  .auth-card { background: #ffffff; }
  .insight-card { background: var(--glass-bg-cool); }
  .btn-secondary, .badge, .public-header-bar, .auth-card, .insight-card, .dock {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .btn:hover { transform: none !important; }
  .dock-add:active { transform: translateY(calc(-1 * var(--dock-add-lift))) !important; }
}

@media (forced-colors: active) {
  .btn, .input, .badge, .auth-card, .public-header-bar, .insight-card, .dock, .dock-add { border-color: CanvasText; }
  .btn-primary { background: ButtonFace; color: ButtonText; }
  .dock-add { background: ButtonFace; color: ButtonText; }
  .dock-item.active { border-color: Highlight; }
}