:root {
  --bg: #f4f7ff;
  --panel: #ffffff;
  --text: #14213d;
  --muted: #60708f;
  --accent: #2563eb;
  --accent-2: #0f766e;
  --border: #dce7ff;
  --shadow: 0 24px 70px rgba(20, 33, 61, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #eef4ff 0%, #f8fbff 100%);
  color: var(--text);
  min-height: 100vh;
  padding: 20px;
}

.topbar {
  max-width: 1150px;
  margin: 0 auto 20px;
}

.topnav {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
}

.topnav a {
  text-decoration: none;
  color: var(--accent);
  background: rgba(255,255,255,0.9);
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(20, 33, 61, 0.08);
}

.app-container {
  display: flex;
  max-width: 1150px;
  margin: 0 auto;
  gap: 20px;
  min-height: 80vh;
}

.email-client,
.sidebar {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.email-client {
  flex: 2;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.email-header {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  padding: 18px 20px;
}

.email-body {
  padding: 24px;
  line-height: 1.7;
}

.meta-data {
  color: var(--muted);
  margin-bottom: 12px;
}

.email-text {
  margin: 16px 0;
}

.btn-container {
  margin: 24px 0;
}

.phish-btn {
  background: linear-gradient(135deg, #f43f5e, #fb923c);
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
}

.sidebar {
  flex: 1;
  padding: 24px;
  color: var(--text);
}

.sidebar h2 {
  margin-top: 0;
  color: var(--accent);
}

#analyze-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  border: none;
  padding: 12px 14px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 999px;
  cursor: pointer;
  margin: 18px 0;
}

.highlight {
  background-color: #fee2e2 !important;
  border: 2px dashed #ef4444 !important;
  padding: 2px 6px;
  border-radius: 6px;
  cursor: help;
  transition: all 0.3s ease;
}

#tip-box {
  background: #f8fbff;
  border: 1px solid var(--border);
  padding: 14px;
  border-radius: 16px;
  margin-top: 16px;
}

#tip-box h3 {
  margin-top: 0;
  color: var(--accent);
}

.hidden {
  display: none;
}