:root {
  --atasa-black: #111111;
  --atasa-charcoal: #232323;
  --atasa-yellow: #ffd447;
  --atasa-orange: #f59d1f;
  --atasa-orange-soft: #ffba59;
  --surface: #fffdf7;
  --surface-strong: #ffffff;
  --text-main: #171717;
  --text-muted: #4a4a4a;
  --border: #f1d98e;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(900px 400px at 4% -10%, rgba(255, 212, 71, 0.14), transparent 58%),
    radial-gradient(1100px 500px at 95% 0%, rgba(245, 157, 31, 0.12), transparent 60%),
    linear-gradient(180deg, #3a342b 0%, #2a2520 38%, #1e1a16 100%);
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  inset: -25%;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 215, 79, 0.09), transparent 42%),
    radial-gradient(circle at 85% 70%, rgba(245, 157, 31, 0.08), transparent 38%);
  animation: pulse 8s ease-in-out infinite alternate;
}

.container {
  position: relative;
  z-index: 2;
  min-height: calc(100vh - 86px);
  display: grid;
  place-items: center;
  padding: 16px;
}

.card {
  width: 100%;
  max-width: 460px;
  background: linear-gradient(180deg, var(--surface-strong) 0%, var(--surface) 100%);
  border-radius: 18px;
  box-shadow: 0 20px 48px rgba(23, 23, 23, 0.22);
  padding: 22px 18px;
  border: 1px solid var(--border);
  backdrop-filter: blur(4px);
}

.brand-logo {
  display: block;
  max-width: 300px;
  width: 100%;
  margin: 0 auto 18px auto;
}

.brand-link {
  display: block;
  text-decoration: none;
}

.brand-link:hover .brand-logo {
  filter: brightness(1.03);
}

h1 {
  margin: 0;
  text-align: center;
  font-size: 1.72rem;
  letter-spacing: 0.05em;
  font-weight: 800;
  color: var(--atasa-black);
}

.subtitle {
  text-align: center;
  margin: 12px 0 22px 0;
  color: var(--text-muted);
  line-height: 1.45;
  font-size: 0.95rem;
}

form {
  display: grid;
  gap: 11px;
}

label {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--atasa-charcoal);
}

input {
  border: 1px solid #e8c769;
  border-radius: 12px;
  padding: 12px 13px;
  font-size: 0.98rem;
  background: #ffffff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  outline: none;
  border-color: var(--atasa-orange);
  box-shadow: 0 0 0 3px rgba(245, 157, 31, 0.2);
}

button {
  margin-top: 8px;
  border: none;
  border-radius: 12px;
  padding: 13px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--atasa-black);
  background: linear-gradient(90deg, var(--atasa-yellow), var(--atasa-orange-soft));
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.16);
}

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

.status {
  min-height: 24px;
  margin-top: 14px;
  text-align: center;
  font-weight: bold;
  font-size: 0.92rem;
  line-height: 1.35;
}

.status.ok {
  color: #166534;
}

.status.error {
  color: #b91c1c;
}

.footer {
  position: fixed;
  z-index: 2;
  inset: auto 0 14px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: rgba(255, 253, 247, 0.92);
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  opacity: 0.98;
}

.dev-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.dev-logo {
  height: 22px;
  opacity: 0.95;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.dev-link:hover .dev-logo {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

@media (min-width: 640px) {
  .container {
    padding: 26px;
  }

  .card {
    padding: 30px 30px;
    border-radius: 20px;
  }

  .brand-logo {
    max-width: 340px;
    margin-bottom: 22px;
  }

  h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1rem;
    margin-bottom: 24px;
  }

  label {
    font-size: 0.92rem;
  }

  input {
    padding: 13px 14px;
    font-size: 1rem;
  }

  .footer {
    gap: 10px;
    font-size: 0.94rem;
  }

  .dev-logo {
    height: 24px;
  }
}

@keyframes pulse {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.08);
  }
}