*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d1a;
  --surface: #1a1a2e;
  --surface2: #16213e;
  --accent: #c9a84c;
  --accent-dim: #a0803a;
  --text: #e8e8f0;
  --text-dim: #8888a8;
  --error: #e05555;
  --ok: #4caf7a;
  --border: #2a2a4a;
  --radius: 10px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 420px;
  padding: 2.5rem 2rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.logo { text-align: center; margin-bottom: 2rem; }

.logo-icon {
  width: 64px; height: 64px; margin: 0 auto 1rem;
  background: var(--surface2); border: 2px solid var(--accent); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 2rem;
}

.logo h1 { font-size: 1.8rem; font-weight: 700; letter-spacing: 0.15em; color: var(--accent); }
.logo p { font-size: 0.78rem; color: var(--text-dim); margin-top: 0.25rem; letter-spacing: 0.05em; }

h2 { font-size: 1.05rem; margin-bottom: 0.75rem; color: var(--text); }
.hint { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 1rem; line-height: 1.45; }

.form-group { margin-bottom: 1.25rem; }

label {
  display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-dim);
  letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 0.4rem;
}

input[type="text"], input[type="email"], input[type="password"] {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text); font-size: 0.95rem;
  padding: 0.65rem 0.85rem; outline: none; transition: border-color 0.2s;
}
input:focus { border-color: var(--accent); }
input::placeholder { color: var(--text-dim); }

.check { display: flex; gap: 0.5rem; align-items: center; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 1rem; }
.check input { width: auto; }

.btn-login {
  width: 100%; background: var(--accent); color: #0d0d1a; border: none; border-radius: 6px;
  font-size: 0.95rem; font-weight: 700; letter-spacing: 0.08em; padding: 0.75rem;
  cursor: pointer; margin-top: 0.5rem; transition: background 0.2s, transform 0.1s;
}
.btn-login:hover { background: #d9b85c; }
.btn-login:active { transform: scale(0.98); }
.btn-login:disabled { background: #5a5a3a; cursor: not-allowed; }

.link-btn {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font-size: 0.82rem; text-decoration: underline; margin-top: 0.9rem; display: inline-block;
}
.links { text-align: center; }
a { color: var(--accent); font-size: 0.82rem; }

.error-msg, .ok-msg {
  border-radius: 6px; font-size: 0.85rem; padding: 0.6rem 0.85rem; margin-bottom: 1rem; display: none;
}
.error-msg { background: rgba(224, 85, 85, 0.15); border: 1px solid var(--error); color: var(--error); }
.ok-msg { background: rgba(76, 175, 122, 0.15); border: 1px solid var(--ok); color: var(--ok); }
.error-msg.visible, .ok-msg.visible { display: block; }

.qr { background: #fff; border-radius: 8px; padding: 8px; width: 220px; margin: 0 auto 0.75rem; }
.qr svg { width: 100%; height: auto; display: block; }
.secret { font-family: Consolas, monospace; font-size: 0.85rem; text-align: center; word-break: break-all; margin-bottom: 1rem; color: var(--accent); }

.codes {
  background: var(--surface2); border: 1px solid var(--border); border-radius: 6px;
  padding: 0.8rem; font-family: Consolas, monospace; font-size: 0.95rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem 1rem; margin-bottom: 1rem; text-align: center;
}

.hidden { display: none !important; }

.footer-note { text-align: center; font-size: 0.72rem; color: var(--text-dim); margin-top: 2rem; opacity: 0.6; }

@media (max-width: 440px) { .login-card { padding: 2rem 1.25rem; } }