/* VALER giriş ekranı */
:root {
  color-scheme: light;
  --bg-1: #141c2e;
  --bg-2: #0c1220;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6b6964;
  --line: rgba(11, 11, 11, 0.14);
  --field: #ffffff;
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --err: #8f1d14;
  --err-bg: #fde8e6;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --surface: #182136;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #9c9a92;
    --line: rgba(255, 255, 255, 0.16);
    --field: #1f2a42;
    --accent: #3987e5;
    --err: #ffb4ab;
    --err-bg: #3b1714;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 15px/1.45 var(--font);
  color: var(--ink);
  background: var(--bg-2);
  background-image: radial-gradient(120% 70% at 50% 0%, var(--bg-1) 0%, var(--bg-2) 70%);
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }

.login {
  min-height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: calc(env(safe-area-inset-top, 0px) + 32px) 20px calc(env(safe-area-inset-bottom, 0px) + 24px);
  gap: 22px;
}

.brand { text-align: center; color: #fff; }
.logo { width: 64px; height: 64px; border-radius: 16px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08); }
.brand h1 { margin: 14px 0 0; font-size: 1.5rem; font-weight: 800; letter-spacing: 0.22em; padding-left: 0.22em; }
.brand p { margin: 4px 0 0; color: #b9c0d0; font-size: 0.9rem; }

.card {
  width: 100%; max-width: 380px;
  background: var(--surface);
  border-radius: 18px;
  padding: 26px 22px 22px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}
.card h2 { margin: 0; font-size: 1.2rem; letter-spacing: -0.01em; }
.hint { margin: 4px 0 20px; color: var(--muted); font-size: 0.9rem; }

.field { display: block; margin-bottom: 14px; }
.field > span:first-child { display: block; font-size: 0.8rem; font-weight: 650; color: var(--ink-2); margin-bottom: 6px; }
.field input {
  width: 100%; height: 48px; padding: 0 14px;
  font: inherit; font-size: 16px; /* iOS yakınlaştırmasın */
  color: var(--ink); background: var(--field);
  border: 1px solid var(--line); border-radius: 12px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.field input[aria-invalid="true"] { border-color: var(--err); }

.pw { position: relative; display: block; }
.pw input { padding-right: 48px; }
.pw-toggle {
  position: absolute; right: 4px; top: 4px; width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 0; background: none; border-radius: 10px; cursor: pointer; color: var(--muted);
}
.pw-toggle:hover { color: var(--ink); }
.pw-toggle:focus-visible { outline: 2px solid var(--accent); }
.pw-toggle svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.pw-toggle[aria-pressed="true"] svg { opacity: 0.5; }

.error {
  margin: 2px 0 14px; padding: 10px 12px; border-radius: 10px;
  background: var(--err-bg); color: var(--err); font-size: 0.88rem; font-weight: 550;
}

.submit {
  position: relative; width: 100%; height: 50px; margin-top: 4px;
  border: 0; border-radius: 12px; cursor: pointer;
  background: var(--accent); color: var(--accent-ink);
  font: inherit; font-weight: 700; font-size: 1rem;
  transition: filter 0.15s, transform 0.05s;
}
.submit:hover { filter: brightness(1.06); }
.submit:active { transform: translateY(1px); }
.submit:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 40%, transparent); outline-offset: 2px; }
.submit[disabled] { cursor: progress; filter: saturate(0.7); }
.submit .spinner {
  display: none; position: absolute; left: 50%; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px;
  border: 2.5px solid rgba(255, 255, 255, 0.35); border-top-color: #fff; border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.submit.loading .label { visibility: hidden; }
.submit.loading .spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .submit .spinner { animation-duration: 2s; } }

.shake { animation: shake 0.35s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
@media (prefers-reduced-motion: reduce) { .shake { animation: none; } }

.foot { display: flex; align-items: center; gap: 6px; margin: 0; color: #8f98ab; font-size: 0.78rem; }
.foot svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; }