@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --accent-1: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --accent-4: #10b981;
  --accent-5: #f59e0b;
  --accent-6: #ef4444;
  --gradient-1: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-2: linear-gradient(135deg, #06b6d4, #0ea5e9);
  --gradient-3: linear-gradient(135deg, #10b981, #34d399);
  --gradient-4: linear-gradient(135deg, #f59e0b, #fbbf24);
  --gradient-5: linear-gradient(135deg, #ef4444, #f97316);
  --gradient-6: linear-gradient(135deg, #ec4899, #8b5cf6);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 16px;
  --radius-sm: 10px;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  padding: 120px 24px 80px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 30px 30px;
  animation: float 20s linear infinite;
}
@keyframes float { to { transform: translate(30px, 30px); } }

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}
.hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 28px;
  position: relative;
}

/* PROGRESS BAR */
.overall-progress {
  max-width: 500px;
  margin: 0 auto;
  position: relative;
}
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.progress-track {
  height: 12px;
  background: rgba(255,255,255,0.25);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #fbbf24, #34d399);
  border-radius: 99px;
  transition: width 0.6s ease;
  width: 0%;
}

/* CONTAINER */
.container {
  max-width: 960px;
  margin: -40px auto 40px;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* STATS */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card .icon { font-size: 1.8rem; margin-bottom: 6px; }
.stat-card .number { font-size: 1.5rem; font-weight: 800; color: var(--accent-1); }
.stat-card .label { font-size: 0.78rem; color: var(--text-secondary); font-weight: 500; }

/* MONTH CARD */
.month-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
  transition: box-shadow 0.3s;
}
.month-card:hover { box-shadow: var(--shadow-md); }

.month-header {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  user-select: none;
  transition: background 0.2s;
}
.month-header:hover { background: #f8fafc; }

.month-badge {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.month-info { flex: 1; }
.month-info h2 { font-size: 1.15rem; font-weight: 700; margin-bottom: 2px; }
.month-info .subtitle { font-size: 0.85rem; color: var(--text-secondary); }

.month-progress-mini {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.month-progress-mini .bar {
  width: 80px;
  height: 6px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
}
.month-progress-mini .fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.4s;
}
.month-progress-mini .pct {
  font-size: 0.8rem;
  font-weight: 700;
  min-width: 36px;
  text-align: right;
}

.chevron {
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.month-card.open .chevron { transform: rotate(180deg); }

/* MONTH BODY */
.month-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
}
.month-card.open .month-body { max-height: 8000px; }

.month-content { padding: 0 24px 24px; }

/* TOPIC */
.topic {
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.topic-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  background: #fafbfc;
  transition: background 0.2s;
}
.topic-header:hover { background: #f1f5f9; }

.topic-check {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid #cbd5e1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  background: white;
}
.topic-check.checked {
  background: var(--accent-4);
  border-color: var(--accent-4);
}
.topic-check.checked::after {
  content: '✓';
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
}

.topic-title {
  font-weight: 600;
  font-size: 0.95rem;
  flex: 1;
}
.topic-title.done { text-decoration: line-through; opacity: 0.5; }

.topic-toggle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: transform 0.3s;
}
.topic.expanded .topic-toggle { transform: rotate(180deg); }

.topic-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.topic.expanded .topic-body { max-height: 3000px; }

.topic-content {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
}
.topic-content p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.7;
}
.topic-content strong { color: var(--text); }

/* RESOURCES */
.resource-list { list-style: none; margin-bottom: 12px; }
.resource-list li {
  padding: 10px 14px;
  background: #f8fafc;
  border-radius: 8px;
  margin-bottom: 6px;
  border: 1px solid #eef2f7;
  transition: transform 0.15s, box-shadow 0.15s;
}
.resource-list li:hover { transform: translateX(4px); box-shadow: var(--shadow-sm); }
.resource-list li a {
  color: var(--accent-1);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.88rem;
}
.resource-list li a:hover { text-decoration: underline; }
.resource-list li .tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
  margin-left: 6px;
  vertical-align: middle;
}
.tag-free { background: #dcfce7; color: #166534; }
.tag-official { background: #dbeafe; color: #1e40af; }
.tag-interactive { background: #fef3c7; color: #92400e; }
.tag-video { background: #fce7f3; color: #9d174d; }

/* PRACTICE BOX */
.practice-box {
  background: linear-gradient(135deg, #eff6ff, #f0fdf4);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-top: 10px;
}
.practice-box .label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-1);
  margin-bottom: 4px;
}
.practice-box p {
  font-size: 0.85rem;
  color: var(--text);
  margin: 0;
}

/* MILESTONE */
.milestone-box {
  background: linear-gradient(135deg, #fefce8, #fef9c3);
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 18px;
  margin-top: 8px;
}
.milestone-box h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #92400e;
}
.milestone-box ul { list-style: none; }
.milestone-box ul li {
  font-size: 0.85rem;
  padding: 4px 0;
  color: #78350f;
}
.milestone-box ul li::before {
  content: '🎯 ';
}

/* DIRECTION CARDS (Month 6) */
.direction-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 16px 0;
}
.direction-card {
  border-radius: var(--radius-sm);
  padding: 20px;
  color: white;
  position: relative;
  overflow: hidden;
}
.direction-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.direction-card .best-for { font-size: 0.8rem; opacity: 0.85; margin-bottom: 10px; }
.direction-card ul { list-style: none; }
.direction-card ul li { font-size: 0.85rem; padding: 2px 0; opacity: 0.9; }
.direction-card ul li::before { content: '→ '; opacity: 0.6; }

/* SALARY TABLE */
.salary-section {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 24px;
  margin-top: 24px;
}
.salary-section h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.salary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.salary-table { width: 100%; border-collapse: collapse; }
.salary-table th, .salary-table td {
  text-align: left;
  padding: 10px 12px;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.salary-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.salary-table td:last-child { font-weight: 700; color: var(--accent-4); }

/* FOOTER */
.footer {
  text-align: center;
  padding: 32px 20px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.footer a { color: var(--accent-1); text-decoration: none; }

/* LINKEDIN BANNER */
.linkedin-banner {
  background: linear-gradient(135deg, #0077b5, #00a0dc);
  border-radius: var(--radius);
  padding: 20px 24px;
  color: white;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-md);
}
.linkedin-banner .icon { font-size: 2rem; }
.linkedin-banner .text h3 { font-size: 1rem; font-weight: 700; }
.linkedin-banner .text p { font-size: 0.85rem; opacity: 0.9; }
.linkedin-banner a {
  background: white;
  color: #0077b5;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  margin-left: auto;
  flex-shrink: 0;
  transition: transform 0.2s;
}
.linkedin-banner a:hover { transform: scale(1.05); }

/* RESPONSIVE */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 40px 16px 60px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .salary-grid { grid-template-columns: 1fr; }
  .month-header { padding: 16px; }
  .direction-cards { grid-template-columns: 1fr; }
  .linkedin-banner { flex-direction: column; text-align: center; }
  .linkedin-banner a { margin-left: 0; }
}