/* ============================================
   HAOGOOD GROUP — Shared Components v4
   Common UI patterns for 4 brand wireframes
   ============================================ */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-base);
  line-height: 1;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-primary {
  background: var(--brand-primary);
  color: var(--text-on-primary);
}
.btn-primary:hover { filter: brightness(1.1); }

.btn-accent {
  background: var(--brand-accent);
  color: var(--text-on-accent);
}
.btn-accent:hover { filter: brightness(1.05); }

.btn-ghost {
  background: transparent;
  color: var(--brand-primary);
  border: 1.5px solid var(--brand-primary);
}
.btn-ghost:hover { background: var(--brand-primary); color: var(--text-on-primary); }

.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--fs-lg); }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--fs-sm); }

/* --- Card --- */
.card {
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card-pad-sm { padding: var(--space-4); }
.card-pad-lg { padding: var(--space-8); }

/* --- Nav Bar --- */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface-base);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(8px);
}
.nav-brand {
  font-family: var(--font-display);
  font-weight: var(--fw-black);
  font-size: var(--fs-xl);
  text-decoration: none;
  color: var(--brand-primary);
}
.nav-links { display: flex; gap: var(--space-6); align-items: center; }
.nav-link {
  color: var(--text-secondary);
  font-weight: var(--fw-medium);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color 0.15s;
}
.nav-link:hover, .nav-link.active { color: var(--brand-primary); }
.nav-endorser-badge {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-style: italic;
}

/* Mobile nav toggle */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-bar { padding: var(--space-3) var(--space-4); }
}

/* --- Footer (4-column grid) --- */
.footer {
  background: var(--brand-primary);
  color: var(--text-on-primary);
  padding: var(--space-16) var(--space-6) var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  max-width: 1280px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  color: var(--brand-accent);
}
.footer-col a {
  display: block;
  color: rgb(255 255 255 / 0.7);
  text-decoration: none;
  padding: var(--space-1) 0;
  font-size: var(--fs-sm);
}
.footer-col a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid rgb(255 255 255 / 0.15);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  text-align: center;
  font-size: var(--fs-xs);
  color: rgb(255 255 255 / 0.5);
}

/* --- Hero Section --- */
.section-hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-16) var(--space-6);
  overflow: hidden;
}
.section-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--hero-bg, none);
  background-size: cover;
  background-position: center;
  z-index: -1;
}
.section-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(0,0,0,0.7));
  z-index: -1;
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-tagline {
  font-size: clamp(2rem, 6vw, var(--fs-6xl));
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-4);
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, var(--fs-xl));
  font-weight: var(--fw-medium);
  max-width: 600px;
  margin: 0 0 var(--space-8);
  opacity: 0.9;
}
.hero-ctas { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* --- Form Fields --- */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.field label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
}
.field input,
.field textarea,
.field select {
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  transition: border-color 0.15s, box-shadow 0.15s;
  background: var(--surface-raised);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgb(212 175 55 / 0.2);
}
.field-error input { border-color: #dc2626; }
.field-error .error-msg { color: #dc2626; font-size: var(--fs-sm); }

/* --- Layout --- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-6); }
.container-narrow { max-width: 720px; margin: 0 auto; padding: 0 var(--space-6); }

.section { padding: var(--space-20) 0; }
@media (max-width: 768px) {
  .section { padding: var(--space-12) 0; }
}

/* --- Endorser Badge (brand → group) --- */
.endorser-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-style: italic;
  padding: var(--space-1) var(--space-3);
  border-left: 2px solid var(--brand-accent);
  text-decoration: none;
}
.endorser-badge::before { content: '\2605'; color: var(--brand-accent); }

/* --- Utility --- */
.text-center { text-align: center; }
.text-accent { color: var(--brand-accent); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}