* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background-color: #0f172a; color: #f8fafc; display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
.auth-card { background: #1e293b; width: 100%; max-width: 420px; padding: 32px; border-radius: 16px; border: 1px solid #334155; box-shadow: 0 10px 25px rgba(0,0,0,0.4); }
.auth-header { text-align: center; margin-bottom: 24px; }
.auth-header h1 { font-size: 22px; font-weight: 700; color: #f1f5f9; }
.auth-header p { font-size: 13px; color: #94a3b8; margin-top: 6px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: #cbd5e1; }
.form-control { width: 100%; padding: 11px 14px; font-size: 14px; border: 1px solid #475569; border-radius: 8px; background-color: #0f172a; color: #fff; outline: none; }
.form-control:focus { border-color: #38bdf8; }
.otp-input { letter-spacing: 8px; font-size: 24px; font-weight: 700; text-align: center; color: #38bdf8; }
.btn-primary { width: 100%; padding: 12px; background: #0284c7; color: #ffffff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; }
.btn-primary:hover { background: #0369a1; }
.btn-secondary { padding: 6px 12px; background: #334155; color: #f1f5f9; border: none; border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer; }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }
.alert { padding: 12px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; }
.alert-error { background-color: rgba(239, 68, 68, 0.15); border: 1px solid #ef4444; color: #fca5a5; }
.alert-success { background-color: rgba(34, 197, 94, 0.15); border: 1px solid #22c55e; color: #86efac; }
.auth-footer { text-align: center; margin-top: 20px; font-size: 13px; color: #94a3b8; }
.auth-footer a { color: #38bdf8; text-decoration: none; font-weight: 600; }
.countdown-box { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; font-size: 12px; color: #94a3b8; }