/* ----------------- RESET ----------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #2c3e50;
  background: #0f172a;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ----------------- NAVIGATION ----------------- */
nav {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #3b82f6;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: #e2e8f0;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #3b82f6;
}

.nav-link {
  margin-left: 20px;
  text-decoration: none;
  font-weight: 500;
  color: #007bff;
}

.nav-link:hover {
  text-decoration: underline;
}

/* ----------------- MITRE SEARCH ----------------- */
.search-bar {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.15);
  padding: 5px 12px;
  border-radius: 25px;
  backdrop-filter: blur(6px);
}

.search-bar input {
  border: none;
  outline: none;
  padding: 6px 10px;
  border-radius: 20px;
  background: transparent;
  color: #fff;
  width: 160px;
}

.search-bar input::placeholder {
  color: #ddd;
}

.search-bar button {
  margin-left: 10px;
  padding: 6px 14px;
  border: none;
  border-radius: 18px;
  background: linear-gradient(135deg, #0078ff, #00c6ff);
  color: white;
  cursor: pointer;
}

#results {
  width: 90%;
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
  background: #1e1e1e;
  color: white;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
  display: none;
}

.result-item {
  padding: 15px;
  margin-bottom: 15px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
}

.result-item strong {
  color: #00c6ff;
}

.result-item small {
  color: #ccc;
  display: block;
  margin-top: 6px;
}

/* ----------------- HERO ----------------- */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000" opacity="0.1"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="%233b82f6" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
}

.hero-content { position: relative; z-index: 2; }

.hero h1 {
  font-size: 3.5rem; font-weight: 700; margin-bottom: 1rem;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero .tagline { font-size: 1.5rem; color: #94a3b8; margin-bottom: 1rem; }

.hero .subtitle { font-size: 1.125rem; color: #cbd5e1; margin-bottom: 2.5rem; max-width: 600px; margin: 0 auto; }

.cta-primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white; padding: 1rem 2.5rem; border: none; border-radius: 50px;
  font-size: 1.125rem; font-weight: 600; cursor: pointer; text-decoration: none;
  transition: all 0.3s ease; box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.cta-primary:hover { transform: translateY(-2px); box-shadow: 0 15px 40px rgba(59, 130, 246, 0.4); }

/* ----------------- SECTIONS ----------------- */
.section { padding: 80px 0; }

.section-dark { background: #1e293b; }

.section-light { background: #f8fafc; color: #334155; }

.section h2 {
  font-size: 2.5rem; font-weight: 700; text-align: center; margin-bottom: 3rem; color: #ffffff;
}

.section-light h2 { color: #1e293b; }

.section-content { max-width: 800px; margin: 0 auto; text-align: center; }

.section p { font-size: 1.125rem; line-height: 1.8; margin-bottom: 1.5rem; color: #cbd5e1; }

.section-light p { color: #64748b; }

/* ----------------- PROBLEM GRID ----------------- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.problem-item {
  background: rgba(59, 130, 246, 0.1);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid #3b82f6;
}

.problem-item h3 {
  color: #3b82f6; font-size: 1.25rem; font-weight: 600; margin-bottom: 1rem;
}

.problem-item p { color: #cbd5e1; font-size: 1rem; }

/* ----------------- FEATURES ----------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: white; padding: 2rem; border-radius: 12px; text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15); }

.feature-icon {
  width: 64px; height: 64px; background: linear-gradient(135deg, #3b82f6, #06b6d4);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; font-size: 1.5rem; color: white;
}

.feature-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 1rem; color: #1e293b; }

.feature-card p { color: #64748b; font-size: 1rem; }

/* ----------------- CHATBOT ----------------- */
.chatbot-container {
  max-width: 900px;
  margin: 3rem auto 0;
  background: rgba(30, 41, 59, 0.8);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(59, 130, 246, 0.2);
  overflow: hidden;
}

.chat-interface { padding: 0; }

.chat-messages {
  max-height: 500px;
  overflow-y: auto;
  padding: 2rem;
  background: rgba(15, 23, 42, 0.5);
}

.bot-message, .user-message {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.user-message { flex-direction: row-reverse; }

.message-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
}

.user-message .message-avatar {
  background: linear-gradient(135deg, #10b981, #059669);
}

.message-content {
  background: rgba(59, 130, 246, 0.1);
  padding: 1rem 1.5rem; border-radius: 12px; color: #e2e8f0;
  line-height: 1.6; max-width: 70%;
}

.user-message .message-content {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.analysis-result {
  margin-top: 1rem;
  padding: 1.5rem;
  background: rgba(15, 23, 42, 0.8);
  border-radius: 12px;
  border-left: 4px solid #3b82f6;
}

.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 1.5rem 0;
}

.chart-container {
  background: rgba(30, 41, 59, 0.6);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.chart-title {
  color: #3b82f6;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-align: center;
}

.chart-wrapper {
  position: relative;
  height: 200px;
  width: 100%;
}

.analysis-item { margin-bottom: 1.5rem; }
.analysis-item:last-child { margin-bottom: 0; }

.analysis-item h4 {
  color: #3b82f6;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.analysis-item p { color: #cbd5e1; margin: 0; font-size: 0.95rem; }

.risk-indicator {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.9rem; font-weight: 600;
}

.risk-high {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.risk-medium {
  background: rgba(245, 158, 11, 0.2);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.risk-low {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.mitre-techniques {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem;
}

.mitre-tag {
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.chat-input-container {
  padding: 2rem;
  background: rgba(30, 41, 59, 0.5);
  border-top: 1px solid rgba(59, 130, 246, 0.2);
  display: flex;
  gap: 1rem;
  align-items: flex-end;
}

#chatInput {
  flex: 1;
  padding: 1rem;
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.8);
  color: #e2e8f0;
  font-family: inherit;
  resize: vertical;
  min-height: 60px;
}

#chatInput:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#chatInput::placeholder { color: #64748b; }

.analyze-btn {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 140px;
  justify-content: center;
}

.analyze-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.analyze-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.loader { animation: spin 1s linear infinite; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ----------------- FOOTER ----------------- */
footer {
  background: #0f172a;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid rgba(59, 130, 246, 0.2);
}

footer p { color: #64748b; }

/* ----------------- RESPONSIVE ----------------- */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .hero .tagline { font-size: 1.25rem; }
  .section h2 { font-size: 2rem; }
  .nav-links { display: none; }
  .analysis-grid { grid-template-columns: 1fr; gap: 1rem; }
}

/* --- Fix Hero Button Position --- */
.hero .cta-primary {
  display: inline-block;
  margin-top: 2rem;   /* ensures spacing below subtitle */
  position: relative; /* prevent overlap */
  z-index: 2;         /* keeps it above background, but below text */
}

.risk-indicator {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-block;
}

.risk-indicator {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-right: 0.5rem;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

.risk-high {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.5);
}

.risk-medium {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.5);
}

.risk-low {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.5);
}