:root {
  --bg: #ffffff;
  --bg-elevated: #f9fafb;
  --bg-soft: #f3f4f6;
  --text-main: #111827;
  --text-soft: #4b5563;
  --border-subtle: rgba(17, 24, 39, 0.08);
  
  --accent-blue: #2563eb;
  --accent-blue-soft: rgba(37, 99, 235, 0.08);
  --accent-gradient-from: #1d4ed8;
  --accent-gradient-to: #3b82f6;
  
  --success: #16a34a;
  
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.03);
  --radius-lg: 16px;
  --radius-pill: 999px;
  
  --nav-height: 70px;
  --container-width: 1040px;
}

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

html, body {
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease, opacity 0.2s ease;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Headings */
h1, h2, h3, h4 {
  font-family: "Playfair Display", serif;
  color: var(--text-main);
  line-height: 1.2;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  gap: 8px;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--accent-gradient-from);
  box-shadow: 0 12px 25px rgba(37, 99, 235, 0.3);
}

/* Header & Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 32px;
  height: auto;
}

.logo-text {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-weight: 600;
  font-size: 17px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

/* Main Content Area */
main {
  flex: 1;
  padding-top: var(--nav-height);
}

/* Footer */
.site-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  margin-top: 80px;
  font-size: 14px;
  color: var(--text-soft);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

.footer-brand a {
  color: var(--text-main);
  font-weight: 500;
}

.footer-brand a:hover {
  color: var(--accent-blue);
}