/* ── Variables ── */
:root {
  /* Colors */
  --color-primary: #55b1ae;
  --color-primary-dark: #2a8280;
  --color-primary-light: rgba(85, 177, 174, 0.12);
  --color-primary-border: rgba(85, 177, 174, 0.20);

  --color-accent: #ef4444;
  --color-accent-dark: #dc2626;
  --color-accent-muted: #b91c1c;
  --color-accent-light: #fef2f2;

  --color-text-main: #374151;
  --color-text-dark: #1a1a1a;
  --color-bg-light: #fef9f0;
  --color-white: #ffffff;
  --color-white-trans: rgba(255, 255, 255, 0.70);
  --color-white-blur: rgba(255, 255, 255, 0.82);

  /* Spacing & Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 32px rgba(85, 177, 174, 0.12);
}

/* ── Reset & base ── */
*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

html { height: 100%; }

body {
  min-height: 100%;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(160deg, #dff5f4 0%, #f0faf9 40%, var(--color-bg-light) 100%);
  background-size: cover;
  background-attachment: fixed;
  color: var(--color-text-dark);
  line-height: 1.5;
}

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

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white-trans);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-primary-border);
  padding: 0.5rem 1rem;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-logo img { 
  display: block; 
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  flex: 1;
}

.nav-links a {
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-main);
}

.nav-links a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.nav-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-shrink: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-outline {
  border: 2px solid var(--color-accent);
  color: var(--color-accent-muted);
  background: var(--color-white);
}

.btn-outline:hover { 
  background: var(--color-accent-light); 
}

.btn-red {
  background: var(--color-accent);
  color: var(--color-white);
  border: 2px solid transparent;
}

.btn-red:hover { 
  background: var(--color-accent-dark); 
}

/* ── Hero ── */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem 6rem;
  min-height: calc(100vh - 80px);
}

.hero-card {
  max-width: 780px;
  width: 100%;
  background: var(--color-white-blur);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--radius-lg);
  padding: 3rem 3.5rem;
  box-shadow: var(--shadow-md), var(--shadow-sm);
}

.hero-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1.75rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-body {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--color-text-main);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero-card {
    padding: 2rem 1.5rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-body {
    font-size: 1rem;
  }

  .nav-links {
    display: none; /* Consider adding a hamburger menu later */
  }
  
  .nav-inner {
    justify-content: space-between;
  }
}