/* Ortak giriş sayfası: ürünün renkleri (web/src/styles/tokens.css'ten kopya; değer orada değişirse burada da). */
:root {
  color-scheme: light;
  --bg: #f5f6f7;
  --surface: #ffffff;
  --text: #1d2d3e;
  --muted: #556b82;
  --border: #e5e5e5;
  --border-strong: #c8ced5;
  --primary: #0070f2;
  --primary-text: #ffffff;
  --error-bg: #ffeaf4;
  --error-text: #aa0808;
  --shadow: 0 0 2px rgb(34 53 72 / 10%), 0 2px 4px rgb(34 53 72 / 8%);
  --radius-s: 8px;
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #12171c;
    --surface: #1d232a;
    --text: #eaecee;
    --muted: #a9b4be;
    --border: #2f3a45;
    --border-strong: #4a5867;
    --primary: #4db1ff;
    --primary-text: #0b1520;
    --error-bg: #3a1d22;
    --error-text: #ff8a9a;
    --shadow: 0 0 2px rgb(0 0 0 / 40%), 0 2px 4px rgb(0 0 0 / 30%);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

[hidden] {
  display: none !important;
}

.app {
  max-width: 420px;
  margin: 0 auto;
  padding: 48px 16px;
  display: grid;
  gap: 16px;
}

.brand h1 {
  margin: 0;
  font-size: 28px;
}

.brand p,
.muted {
  margin: 0;
  color: var(--muted);
}

.small {
  font-size: 13px;
}

.card {
  display: grid;
  gap: 12px;
  padding: 24px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0;
  font-size: 20px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 500;
}

input {
  font: inherit;
  padding: 10px 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-s);
}

input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

button {
  font: inherit;
  font-weight: 600;
  padding: 10px 16px;
  color: var(--primary-text);
  background: var(--primary);
  border: 0;
  border-radius: var(--radius-s);
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

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

.error {
  margin: 0;
  padding: 8px 12px;
  color: var(--error-text);
  background: var(--error-bg);
  border-radius: var(--radius-s);
}