/* ============================================================
   main.css — EBS Elite Bio-Systems shared design system
   Derived from the visual identity spec (docs/ebs.html)
   ============================================================ */

:root {
  /* -- identity palette -- */
  --onyx: #0B0B0C;
  --graphite: #141416;
  --slate: #1C1C1F;
  --ash: #2B2A28;
  --bronze: #8A5E24;
  --gold: #C99B36;
  --gold-bright: #D9AE4E;
  --champagne: #F2E1B0;
  --bone: #E8E6E1;
  --mute: #8A8781;
  --patina: #4F7A6D;
  --rust: #C0674A;
  --foil: linear-gradient(104deg, #6B4415 0%, #C99B36 20%, #F5EACB 40%, #C99B36 56%, #8A5E24 74%, #E3C877 100%);

  /* -- semantic aliases -- */
  --color-text: #C8C6C1;
  --color-text-muted: var(--mute);
  --color-bg: var(--onyx);
  --color-surface: var(--graphite);
  --color-border: var(--ash);

  /* -- type -- */
  --disp: 'Jost', 'Century Gothic', 'Futura', system-ui, sans-serif;
  --text: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;

  --radius: 3px;
  --radius-sm: 2px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--text);
  font-weight: 300;
  color: var(--color-text);
  background: var(--onyx);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* faint gold / patina atmosphere, as in the identity document */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(120% 70% at 50% -10%, rgba(201, 155, 54, 0.09), transparent 60%),
    radial-gradient(90% 60% at 100% 100%, rgba(79, 122, 109, 0.06), transparent 70%);
}

body > * {
  position: relative;
  z-index: 1;
}

img {
  max-width: 100%;
  display: block;
}

h1, h2, h3 {
  font-family: var(--disp);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bone);
}

a {
  color: var(--gold);
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Type primitives ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mute);
  font-weight: 400;
}

.foil {
  background: var(--foil);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Header ---------- */
.site-header {
  background: rgba(11, 11, 12, 0.82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ash);
  padding: 16px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--bone);
}

.brand img,
.brand svg {
  height: 38px;
  width: auto;
  flex: 0 0 auto;
}

.brand .brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand .brand-name {
  font-family: var(--disp);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--champagne);
  line-height: 1.2;
}

.brand .brand-sub {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mute);
}

/* ---------- Cards ---------- */
.card {
  background: var(--graphite);
  border: 1px solid var(--ash);
  border-radius: var(--radius);
  padding: 28px;
}

/* ---------- Forms ---------- */
label {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 8px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="file"] {
  width: 100%;
  padding: 11px 13px;
  font-size: 0.92rem;
  font-family: var(--text);
  font-weight: 300;
  border: 1px solid var(--ash);
  border-radius: var(--radius-sm);
  background: var(--onyx);
  color: var(--bone);
  transition: border-color 0.2s ease;
}

input::placeholder {
  color: var(--mute);
}

input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 155, 54, 0.12);
}

input[type="file"] {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mute);
}

input[type="file"]::file-selector-button {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--champagne);
  background: transparent;
  border: 1px solid var(--ash);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  margin-right: 12px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.field {
  margin-bottom: 18px;
}

.field .hint {
  font-size: 0.78rem;
  color: var(--mute);
  margin-top: 6px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--disp);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--onyx);
}

.btn-primary:hover {
  background: var(--gold-bright);
  border-color: var(--champagne);
  box-shadow: 0 0 0 4px rgba(201, 155, 54, 0.12);
}

.btn-secondary {
  background: transparent;
  color: var(--bone);
  border-color: var(--ash);
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--champagne);
}

.btn-danger {
  background: transparent;
  color: var(--rust);
  border-color: rgba(192, 103, 74, 0.45);
}

.btn-danger:hover {
  background: rgba(192, 103, 74, 0.12);
  border-color: var(--rust);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:focus-visible,
a:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 3px;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  border-radius: var(--radius);
  font-family: var(--disp);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.badge .icon {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-size: 0.95rem;
  flex: 0 0 auto;
}

.badge.verified {
  background: rgba(79, 122, 109, 0.1);
  color: #7FA99C;
  border: 1px solid rgba(79, 122, 109, 0.55);
}

.badge.unverified {
  background: rgba(192, 103, 74, 0.1);
  color: var(--rust);
  border: 1px solid rgba(192, 103, 74, 0.5);
  letter-spacing: 0.08em;
  text-transform: none;
  font-family: var(--text);
  font-weight: 400;
  text-align: left;
  line-height: 1.5;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--slate);
  border: 1px solid var(--gold);
  color: var(--champagne);
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  max-width: min(90vw, 480px);
  text-align: center;
}

.toast.show {
  opacity: 1;
}

.toast.error {
  border-color: var(--rust);
  color: #E0A794;
}

/* ---------- Utility ---------- */
.hidden {
  display: none !important;
}

.text-muted {
  color: var(--mute);
}

.hr {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--ash), rgba(201, 155, 54, 0.35), transparent);
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(201, 155, 54, 0.25);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn-primary .spinner {
  border-color: rgba(11, 11, 12, 0.3);
  border-top-color: var(--onyx);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 520px) {
  .badge {
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    padding: 12px 18px;
    gap: 10px;
  }

  .badge .icon {
    width: 26px;
    height: 26px;
    font-size: 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}