/* SupplierVision — Auth screens (login, tenant selection) design system */
:root {
  --sv-font-sans: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --sv-font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --sv-bg:        oklch(0.992 0.003 250);
  --sv-surface:   #ffffff;
  --sv-surface-2: oklch(0.978 0.004 250);
  --sv-border:    oklch(0.918 0.006 250);
  --sv-divider:   oklch(0.94 0.005 250);

  --sv-fg:   oklch(0.22 0.02 256);
  --sv-fg-2: oklch(0.42 0.018 256);
  --sv-fg-3: oklch(0.58 0.015 256);
  --sv-fg-4: oklch(0.72 0.01 256);

  --sv-accent:        oklch(0.52 0.16 258);
  --sv-accent-hover:  oklch(0.46 0.17 258);
  --sv-accent-soft:   oklch(0.96 0.025 258);
  --sv-accent-soft-2: oklch(0.92 0.04 258);
  --sv-accent-fg:     #ffffff;
  --sv-accent-ring:   oklch(0.52 0.16 258 / 0.25);

  --sv-success:      oklch(0.58 0.13 155);
  --sv-success-soft: oklch(0.96 0.04 155);
  --sv-danger:       oklch(0.58 0.18 25);
  --sv-danger-soft:  oklch(0.965 0.025 25);

  --sv-r-sm: 6px; --sv-r-md: 8px; --sv-r-lg: 12px;
  --sv-shadow-sm: 0 1px 2px rgba(15,23,42,.04), 0 1px 1px rgba(15,23,42,.03);
  --sv-shadow-md: 0 4px 14px -4px rgba(15,23,42,.08), 0 2px 4px -2px rgba(15,23,42,.04);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--sv-font-sans);
  color: var(--sv-fg);
  background: var(--sv-surface);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
}
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: var(--sv-accent); }

/* Shell: brand panel + form panel */
.auth { min-height: 100vh; display: grid; grid-template-columns: 1.05fr 1fr; }

.auth-brand {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(150deg, var(--sv-accent-hover), var(--sv-accent) 55%, color-mix(in oklab, var(--sv-accent) 70%, #6aa0ff));
  padding: 56px 56px 48px; display: flex; flex-direction: column; justify-content: space-between;
}
.auth-brand-grid {
  position: absolute; inset: 0; opacity: .16;
  background-image: linear-gradient(#fff 1px, transparent 1px), linear-gradient(90deg, #fff 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 30% 20%, #000, transparent 75%);
          mask-image: radial-gradient(circle at 30% 20%, #000, transparent 75%);
}
.auth-brand-glow { position: absolute; width: 420px; height: 420px; border-radius: 50%; right: -120px; bottom: -120px; background: radial-gradient(circle, rgba(255,255,255,.22), transparent 70%); }
/* Real content sits above the decorative layers; keep grid/glow absolute (higher specificity than the rule below). */
.auth-brand > * { position: relative; z-index: 1; }
.auth-brand > .auth-brand-grid, .auth-brand > .auth-brand-glow { position: absolute; z-index: 0; }
.auth-brand-logo { display: flex; align-items: center; gap: 12px; }
.auth-brand-logo span { font-size: 17px; font-weight: 600; letter-spacing: -0.02em; }
.auth-brand-kicker { font-size: 13px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; opacity: .8; margin-bottom: 16px; }
.auth-brand h1 { font-size: 38px; font-weight: 600; letter-spacing: -0.03em; line-height: 1.12; max-width: 460px; }
.auth-brand-lead { font-size: 15px; line-height: 1.6; opacity: .88; margin-top: 16px; max-width: 420px; }
.auth-brand-feats { display: flex; flex-direction: column; gap: 12px; margin-top: 30px; }
.auth-brand-feat { display: flex; align-items: center; gap: 10px; font-size: 14px; opacity: .92; }
.auth-brand-feat svg { flex-shrink: 0; opacity: .95; }
.auth-brand-foot { display: flex; align-items: center; gap: 8px; font-size: 12.5px; opacity: .8; }
.auth-brand-foot b { font-weight: 600; font-style: italic; letter-spacing: -0.02em; }

.auth-form { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 64px; position: relative; }
.auth-form-inner { width: 100%; max-width: 380px; }
.auth-foot { position: absolute; bottom: 24px; font-size: 12px; color: var(--sv-fg-4); }

.auth-title { font-size: 24px; font-weight: 600; letter-spacing: -0.025em; }
.auth-sub { font-size: 14px; color: var(--sv-fg-3); margin-top: 6px; }

/* Field */
.auth-field { margin-bottom: 16px; }
.auth-label { display: block; font-size: 12.5px; font-weight: 500; color: var(--sv-fg-2); margin-bottom: 6px; }
.auth-input-wrap { position: relative; }
.auth-input-wrap .ico { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--sv-fg-3); display: flex; }
.sv-input {
  width: 100%; height: 44px; padding: 0 12px; border: 1px solid var(--sv-border);
  border-radius: var(--sv-r-sm); background: var(--sv-surface); font-size: 14px; color: var(--sv-fg);
  font-family: inherit; outline: none; transition: border-color .12s, box-shadow .12s;
}
.sv-input.has-ico { padding-left: 38px; }
.sv-input:focus { border-color: var(--sv-accent); box-shadow: 0 0 0 3px var(--sv-accent-ring); }
.sv-input::placeholder { color: var(--sv-fg-4); }

/* Buttons */
.sv-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  cursor: pointer; border-radius: var(--sv-r-md); font-weight: 500; font-size: 14px;
  letter-spacing: -0.005em; border: 1px solid transparent; transition: all .12s;
  white-space: nowrap; height: 44px; padding: 0 16px; font-family: inherit; text-decoration: none;
}
.sv-btn-primary { background: var(--sv-accent); color: var(--sv-accent-fg); width: 100%; }
.sv-btn-primary:hover { background: var(--sv-accent-hover); }
.sv-btn-secondary { background: var(--sv-surface); color: var(--sv-fg); border-color: var(--sv-border); box-shadow: var(--sv-shadow-sm); }
.sv-btn-secondary:hover { background: var(--sv-surface-2); }

/* Divider */
.auth-or { display: flex; align-items: center; gap: 12px; margin: 22px 0; }
.auth-or::before, .auth-or::after { content: ""; flex: 1; height: 1px; background: var(--sv-divider); }
.auth-or span { font-size: 12px; color: var(--sv-fg-4); }

/* Alerts */
.auth-alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--sv-r-md); border: 1px solid; font-size: 13px; margin-bottom: 18px; }
.auth-alert svg { flex-shrink: 0; margin-top: 1px; }
.auth-alert-danger { background: var(--sv-danger-soft); border-color: oklch(0.85 0.1 25); color: oklch(0.4 0.14 25); }
.auth-alert-success { background: var(--sv-success-soft); border-color: oklch(0.85 0.09 155); color: oklch(0.35 0.1 155); }

/* Lang switch */
.auth-lang { display: inline-flex; background: var(--sv-surface-2); border: 1px solid var(--sv-border); border-radius: 8px; padding: 2px; }
.auth-lang a { padding: 5px 12px; border-radius: 6px; font-size: 12.5px; font-weight: 500; color: var(--sv-fg-3); text-decoration: none; }
.auth-lang a.is-active { background: var(--sv-surface); color: var(--sv-fg); box-shadow: var(--sv-shadow-sm); }

/* Tenant cards */
.auth-user { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.sv-avatar {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, oklch(0.62 0.16 258), oklch(0.42 0.17 260));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
}
.tenant-list { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.tenant-card {
  all: unset; box-sizing: border-box; width: 100%; cursor: pointer;
  display: flex; align-items: center; gap: 14px; padding: 14px 16px;
  border-radius: var(--sv-r-md); border: 1.5px solid var(--sv-border); background: var(--sv-surface);
  transition: border-color .12s, background .12s, box-shadow .12s;
}
.tenant-card:hover { border-color: var(--sv-accent); background: var(--sv-accent-soft); box-shadow: 0 0 0 3px var(--sv-accent-ring); }
.tenant-mark {
  width: 40px; height: 40px; border-radius: 9px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--sv-accent-soft), var(--sv-accent-soft-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 600; color: var(--sv-accent); border: 1px solid var(--sv-accent-soft-2);
  text-transform: uppercase;
}
.tenant-name { font-size: 14.5px; font-weight: 600; color: var(--sv-fg); }
.tenant-sub { font-size: 12.5px; color: var(--sv-fg-3); margin-top: 1px; }
.tenant-card .chev { color: var(--sv-fg-4); flex-shrink: 0; }
.tenant-card:hover .chev { color: var(--sv-accent); }

.auth-back { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--sv-accent); text-decoration: none; font-weight: 500; }

@media (max-width: 860px) {
  .auth { grid-template-columns: 1fr; }
  .auth-brand { display: none; }
  .auth-form { padding: 32px 20px; }
}