/* Marka, giriş ekranı ve butonlar */

/* ---------- marka ---------- */
.brand { display: flex; flex-direction: column; align-items: center; gap: 0.35rem; }
.brand-mark { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.brand-mark em { font-style: normal; color: var(--accent); }
.brand-sub { font-size: 0.68rem; letter-spacing: 0.35em; color: var(--text-dim); }
.brand-small .brand-mark { font-size: 1.45rem; }

/* ---------- giriş ---------- */
.login-body {
  display: flex; flex-direction: column;
  background:
    radial-gradient(60rem 30rem at 85% -10%, var(--bg-grad-1), transparent 60%),
    radial-gradient(40rem 24rem at -10% 110%, var(--bg-grad-2), transparent 60%),
    var(--bg);
}
.login-wrap {
  flex: 1; display: flex; flex-direction: column; justify-content: center;
  align-items: center; padding: var(--space);
  padding-top: calc(env(safe-area-inset-top) + var(--space));
  padding-bottom: calc(env(safe-area-inset-bottom) + var(--space));
  min-height: 100vh;
}
.login-card {
  width: 100%; max-width: 24rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow-float);
  padding: clamp(1.6rem, 5vw, 2.4rem);
  animation: cardIn var(--duration-slow) var(--ease) backwards;
}
.login-card .brand { margin-bottom: 1.8rem; }
.login-card h1 { font-size: 1.35rem; margin-bottom: 0.3rem; letter-spacing: -0.01em; }
.login-hint { color: var(--text-dim); font-size: 0.86rem; margin-bottom: 1.5rem; }
.login-foot { margin-top: 1.4rem; color: var(--text-dim); font-size: 0.75rem; }

.field { display: block; margin-bottom: 1rem; }
.field span {
  display: block; font-size: 0.72rem; letter-spacing: 0.07em; font-weight: 600;
  text-transform: uppercase; color: var(--text-dim); margin-bottom: 0.4rem;
}
.field input {
  width: 100%; padding: 0.85rem 1rem;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-s);
  font-size: 1rem;
  transition: border-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
}
.field input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-error { color: var(--red); font-size: 0.85rem; margin: -0.3rem 0 0.8rem; }

/* ---------- butonlar ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border: none; border-radius: 14px; cursor: pointer;
  font-size: 0.95rem; font-weight: 700; padding: 0.85rem 1.2rem;
  font-family: inherit; letter-spacing: 0.01em;
  transition: transform var(--duration-fast) var(--ease-spring),
              filter var(--duration-fast) var(--ease),
              box-shadow var(--duration-fast) var(--ease),
              opacity var(--duration-fast) var(--ease);
  text-decoration: none;
}
/* Basma geri bildirimi: parmak indiğinde anında (60ms) çöker, kalkınca yay ile
   geri döner. Native uygulamalardaki his budur — basış anlık, dönüş yumuşak.
   -webkit-tap-highlight-color kapalı, yoksa mobil tarayıcı kendi gri karesini basıyor. */
.btn { -webkit-tap-highlight-color: transparent; }
.btn:active {
  transform: scale(0.955);
  filter: brightness(0.94);
  transition-duration: 60ms;
}
.rez-aksiyon .btn:active { transform: scale(0.975); } /* geniş düğmede daha az çökme */
.btn:disabled { opacity: 0.55; cursor: default; }
.btn-block { width: 100%; }
.btn-primary {
  background: linear-gradient(180deg, #f8c45c, var(--accent));
  color: var(--accent-ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.25) inset, 0 8px 22px var(--accent-soft);
}
.btn-success {
  background: linear-gradient(180deg, #3cc684, var(--green));
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2) inset, 0 8px 22px var(--green-soft);
}
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line-strong); }

.btn-spinner {
  width: 1.1em; height: 1.1em; border-radius: 50%;
  border: 2px solid currentColor; border-top-color: transparent;
  display: inline-block; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }