/* Global Variables */
:root {
  /* Pastel Light Theme */
  --bg-color: #f8faff;
  /* Very light blue-ish white */
  --bg-hero: #eef2ff;
  /* Slightly darker for hero sections */
  --primary-color: #6366f1;
  /* Soft Indigo */
  --primary-hover: #4f46e5;
  --text-main: #334155;
  /* Slate 700 */
  --text-muted: #64748b;
  /* Slate 500 */
  --border-color: #e2e8f0;
  /* Slate 200 */
  --card-bg: #ffffff;
  --accent-color: #818cf8;
  /* Lighter Indigo for accents */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --radius-lg: 1rem;
  --font-sans: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

/* Reset & Basics */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-hover);
}

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

/* Header & Nav */
header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--text-main);
  font-size: 1.1rem;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  color: var(--text-muted);
  font-weight: 500;
}

nav a:hover,
nav a.active {
  color: var(--primary-color);
}

/* Typography */
h1,
h2,
h3 {
  color: var(--text-main);
  margin: 0 0 16px;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
}

p {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: white;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* Sections */
section {
  padding: 80px 0;
}

.hero {
  background: url('assets/hero_bg.png') no-repeat center center;
  background-size: cover;
  padding: 100px 0;
  text-align: center;
}

.hero.left-align {
  text-align: left;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0;
  margin-top: 60px;
  text-align: center;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

/* Utilities */
.muted {
  color: var(--text-muted);
}

.text-center {
  text-align: center;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mt-4 {
  margin-top: 1rem;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: #e0e7ff;
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

/* Responsive */
@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

  nav {
    display: none;
  }

  /* Simplified for mobile - normally would add a hamburger menu */
  .mobile-nav-visible nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }

  h1 {
    font-size: 2.5rem;
  }
}