:root {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --border-color: #cbd5e1;
  --radius: 12px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }

.verify-body {
  background-color: var(--bg-main);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.verify-container { width: 100%; max-width: 440px; }

.verify-card {
  background-color: var(--bg-surface);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
}

.verify-header { text-align: center; margin-bottom: 1.75rem; }
.verify-logo { height: 36px; width: auto; margin-bottom: 0.75rem; }
.verify-header h1 { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.4rem; }
.verify-header p { color: var(--text-muted); font-size: 0.85rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; }
.form-group input {
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  letter-spacing: 1px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }

.btn {
  display: inline-flex; justify-content: center; align-items: center;
  padding: 0.8rem 1.5rem; border: none; border-radius: 8px;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  transition: background-color 0.2s, opacity 0.2s;
}
.btn-primary { background-color: var(--primary); color: #fff; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-block { width: 100%; }

.verify-result { margin-top: 1.5rem; }
.result-box {
  padding: 1rem 1.1rem;
  border-radius: 8px;
  font-size: 0.9rem;
}
.result-box.valid { background-color: #f0fdf4; border: 1px solid #86efac; color: #16a34a; }
.result-box.invalid { background-color: #fef2f2; border: 1px solid #fca5a5; color: #dc2626; }
.result-box strong { display: block; margin-bottom: 0.25rem; font-size: 0.95rem; }

.verify-footer { margin-top: 1.75rem; text-align: center; font-size: 0.85rem; }
.verify-footer a { color: var(--primary); text-decoration: none; }
.verify-footer a:hover { text-decoration: underline; }