:root {
  --c-bg-1: #0f172a;
  --c-bg-2: #1e293b;
  --c-accent: #3b82f6;
  --c-accent-hi: #60a5fa;
  --c-text: #f8fafc;
  --c-muted: #94a3b8;
  --c-card: rgba(15, 23, 42, 0.85);
  --c-input: #1e293b;
  --c-input-border: #334155;
  --c-error-bg: #7f1d1d;
  --c-error-text: #fecaca;
  --r-md: 10px;
  --r-lg: 16px;
}

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

.auth-body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  background:
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.25), transparent 60%),
    radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.25), transparent 60%),
    linear-gradient(135deg, var(--c-bg-1), var(--c-bg-2));
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--c-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--r-lg);
  padding: 40px 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.auth-brand {
  display: inline-block;
  margin-bottom: 24px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--c-text);
  text-decoration: none;
}
.auth-brand span { color: var(--c-accent-hi); }

.auth-card h1 {
  margin: 0 0 6px;
  font-size: 26px;
  font-weight: 700;
}
.auth-sub {
  margin: 0 0 24px;
  color: var(--c-muted);
  font-size: 14px;
}

.auth-card form { display: flex; flex-direction: column; gap: 14px; }
.auth-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--c-muted); }
.auth-card input[type="text"],
.auth-card input[type="email"],
.auth-card input[type="password"] {
  background: var(--c-input);
  border: 1px solid var(--c-input-border);
  border-radius: var(--r-md);
  padding: 12px 14px;
  color: var(--c-text);
  font-size: 14px;
  min-height: 44px;
  transition: border-color 120ms, box-shadow 120ms;
}
.auth-card input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.auth-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .auth-row { grid-template-columns: 1fr; } }

.auth-check { flex-direction: row; align-items: center; gap: 8px; color: var(--c-text); }
.auth-check input { accent-color: var(--c-accent); }

.auth-card button {
  background: linear-gradient(135deg, var(--c-accent), #6366f1);
  color: white;
  border: none;
  padding: 13px 16px;
  border-radius: var(--r-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 6px;
  transition: transform 80ms, box-shadow 120ms;
}
.auth-card button:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4); }
.auth-card button:active { transform: translateY(0); }

.auth-foot {
  margin: 22px 0 0;
  font-size: 13px;
  color: var(--c-muted);
  text-align: center;
  line-height: 1.7;
}
.auth-foot a { color: var(--c-accent-hi); text-decoration: none; }
.auth-foot a:hover { text-decoration: underline; }

.auth-error {
  background: var(--c-error-bg);
  border: 1px solid #b91c1c;
  color: var(--c-error-text);
  padding: 12px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  margin-bottom: 18px;
}

.auth-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
  padding: 12px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  margin-bottom: 18px;
}

/* ============================================
   Responsive — mobile (max-width: 760px)
   ============================================ */
@media (max-width: 760px) {
  .auth-body { padding: 14px; align-items: flex-start; padding-top: 32px; }
  .auth-card {
    padding: 28px 22px;
    max-width: 100%;
    border-radius: 14px;
  }
  .auth-brand { font-size: 18px; margin-bottom: 20px; }
  .auth-card h1 { font-size: 22px; }
  .auth-sub { font-size: 13px; margin-bottom: 20px; }
  .auth-card label { font-size: 12px; }
  /* iOS zoom önleme: 16px input font + 44px min-height */
  .auth-card input[type="text"],
  .auth-card input[type="email"],
  .auth-card input[type="password"] {
    font-size: 16px;
    padding: 12px 14px;
    min-height: 46px;
    border-radius: 10px;
  }
  .auth-card button {
    width: 100%;
    min-height: 48px;
    font-size: 16px;
    padding: 14px 16px;
  }
  .auth-foot { font-size: 13px; line-height: 1.8; }
  .auth-foot a { display: inline-block; min-height: 32px; padding: 4px 0; }
}

/* ============================================
   Responsive — small phone (max-width: 380px)
   ============================================ */
@media (max-width: 380px) {
  .auth-body { padding: 10px; padding-top: 24px; }
  .auth-card { padding: 24px 18px; }
  .auth-card h1 { font-size: 20px; }
}

/* ============================================
   RTL desteği
   ============================================ */
[dir="rtl"] .auth-card { text-align: right; }
[dir="rtl"] .auth-foot { text-align: center; }

/* ===== Brand icon (auth pages) ===== */
.auth-brand { display: inline-flex !important; align-items: center; gap: 10px; margin-bottom: 24px; }
.auth-brand .brand-icon { width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0; }
.auth-brand .brand-text { display: inline-flex; align-items: baseline; gap: 5px; font-weight: 800; font-size: 20px; color: var(--c-text); }
.auth-brand .brand-text span { color: var(--c-accent-hi); }

@media (max-width: 480px) {
  .auth-brand .brand-icon { width: 32px; height: 32px; }
  .auth-brand .brand-text { font-size: 18px; }
}