*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #080C10; --surface: #0F1620; --border: rgba(255,255,255,0.07);
  --accent: #2563EB; --accent-light: #3B82F6; --text: #F0F4F8; --muted: #6B7A8D;
  --font-display: 'Syne', sans-serif; --font-body: 'DM Sans', sans-serif;
}
body { background: var(--bg); color: var(--text); font-family: var(--font-body); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.bg-glow { position: fixed; inset: 0; background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(37,99,235,0.1) 0%, transparent 60%); pointer-events: none; }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 48px 44px; width: 100%; max-width: 420px; position: relative; }
.login-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; border-radius: 20px 20px 0 0; background: linear-gradient(90deg, transparent, var(--accent), transparent); }
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h1 { font-family: var(--font-display); font-size: 28px; font-weight: 800; letter-spacing: -0.02em; }
.login-logo h1 span { color: var(--accent-light); }
.login-logo p { color: var(--muted); font-size: 14px; margin-top: 6px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--muted); margin-bottom: 8px; letter-spacing: 0.04em; text-transform: uppercase; }
.form-group input { width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px; color: var(--text); font-family: var(--font-display); font-size: 20px; font-weight: 700; letter-spacing: 4px; text-align: center; transition: border-color 0.2s; outline: none; }
.form-group input:focus { border-color: rgba(37,99,235,0.5); }
.form-group input::placeholder { color: var(--muted); letter-spacing: 2px; font-weight: 400; font-size: 16px; }
.error-msg { background: rgba(220,38,38,0.1); border: 1px solid rgba(220,38,38,0.2); color: #FCA5A5; padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 20px; text-align: center; display: none; }
.btn-login { width: 100%; background: var(--accent); color: #fff; border: none; padding: 15px; border-radius: 10px; font-family: var(--font-display); font-weight: 700; font-size: 16px; cursor: pointer; transition: background 0.2s, transform 0.2s; }
.btn-login:hover { background: var(--accent-light); transform: translateY(-1px); }
.btn-login:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.back-link { display: block; text-align: center; margin-top: 20px; color: var(--muted); font-size: 13px; text-decoration: none; transition: color 0.2s; }
.back-link:hover { color: var(--text); }