/* ==============================
   RESET & GLOBAL SETTINGS
============================== */

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

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: #334155;

  --max-width: 1100px;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* === Dropdown Navigation Styles === */

/* Base flex nav */
.site-nav .nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

/* Dropdown container */
.nav-item.dropdown {
  position: relative;
}

/* Hide submenu by default */
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  list-style: none;
  min-width: 140px;
  padding: 0.5rem 0;
  z-index: 10;
}

/* Show submenu on hover/focus */
.nav-item.dropdown:hover > .dropdown-menu,
.nav-item.dropdown:focus-within > .dropdown-menu {
  display: block;
}

/* Dropdown links */
.dropdown-menu li a {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.6rem;
  transition: background-color 0.25s ease;
}

.dropdown-menu li a:hover {
  background-color: var(--border-color);
}

/* Add an invisible buffer so the cursor doesn’t accidentally leave the dropdown */
.nav-item.dropdown::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 5px;
}      

.dropdown-menu {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.nav-item.dropdown:hover .dropdown-menu,
.nav-item.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
}
/* ==============================
   LAYOUT UTILITIES
============================== */

.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

section {
  padding: 4rem 0;
}

h1, h2, h3 {
  font-weight: 600;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
}

/* ==============================
   HEADER & NAVIGATION
============================== */

.site-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  font-size: 1.3rem;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent);
}


/* ==============================
   HERO SECTION
============================== */

.hero {
  text-align: center;
  padding: 6rem 0;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 700px;
  margin: 0 auto 2rem auto;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ==============================
   BUTTONS
============================== */

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 6px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}

.primary-btn {
  background-color: var(--accent);
  color: white;
}

.primary-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

.secondary-btn {
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.secondary-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ==============================
   PROBLEM & SOLUTION SECTIONS
============================== */

.problem,
.solution,
.roadmap-preview {
  background-color: var(--bg-secondary);
}

.problem-grid,
.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

/* ==============================
   CARDS
============================== */

.card,
.month-card {
  background-color: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover,
.month-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.card h3,
.month-card h3 {
  margin-bottom: 0.8rem;
}

/* ==============================
   ROADMAP GRID
============================== */

.months-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.center-cta {
  text-align: center;
  margin-top: 2rem;
}

/* ==============================
   FINAL CTA
============================== */

.final-cta {
  text-align: center;
  padding: 5rem 0;
}

.final-cta p {
  max-width: 600px;
  margin: 1rem auto 2rem auto;
}

/* ==============================
   FOOTER
============================== */

.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ==============================
   RESPONSIVE DESIGN
============================== */

@media (max-width: 768px) {

  .nav-links {
    gap: 1rem;
  }

  .hero h2 {
    font-size: 2rem;
  }

  section {
    padding: 3rem 0;
  }

}

@media (max-width: 480px) {

  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0;
  }

}