/* =========================
   IndoBridge - Common CSS
   Reset / Base / Header / Footer / Common Sections
========================= */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  background: #f8fafc;
  color: #0f172a;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid #e2e8f0;
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 24px;
  font-weight: 900;
  color: #0f766e;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: #475569;
  font-weight: 600;
}

.nav-button {
  background: #0f766e;
  color: white;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
}

/* Common section */
section {
  padding: 88px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 40px;
}

.section-heading.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-heading h2 {
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.05em;
  margin-bottom: 16px;
}

.section-heading p {
  font-size: 18px;
  color: #64748b;
}

/* Problem section */
.problem {
  background: white;
}

.problem-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 28px;
  padding: 36px;
  font-size: 19px;
  color: #475569;
}

.source-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.source-tags span {
  background: white;
  border: 1px solid #e2e8f0;
  padding: 10px 14px;
  border-radius: 999px;
  color: #334155;
  font-weight: 800;
  font-size: 14px;
}

/* Cover cards */
.cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 24px;
  padding: 26px;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.04);
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: #ccfbf1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 22px;
}

.card h3 {
  color: #0f172a;
  margin-bottom: 10px;
  font-size: 19px;
  letter-spacing: -0.03em;
}

.card p {
  color: #64748b;
  font-size: 15px;
}

/* Sample brief section */
.sample {
  background: #0f172a;
  color: white;
}

.sample .section-heading p {
  color: #cbd5e1;
}

.sample-preview {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 28px;
  padding: 34px;
}

.sample-preview ol {
  padding-left: 22px;
  display: grid;
  gap: 14px;
  color: #e2e8f0;
  font-size: 18px;
}

/* Coming soon */
.coming {
  background: white;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.feature {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 22px;
  padding: 22px;
  font-weight: 800;
  color: #334155;
}

/* Newsletter */
.newsletter {
  background:
    radial-gradient(circle at 20% 20%, #5eead4, transparent 30%),
    linear-gradient(135deg, #0f766e, #0f172a);
  color: white;
  text-align: center;
}

.newsletter h2 {
  font-size: clamp(34px, 4vw, 54px);
  letter-spacing: -0.05em;
  line-height: 1.12;
  margin-bottom: 16px;
}

.newsletter p {
  color: #d1fae5;
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto 30px;
}

.newsletter-form {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.newsletter-form input {
  width: min(390px, 100%);
  padding: 16px 18px;
  border-radius: 999px;
  border: none;
  font-size: 16px;
  outline: none;
}

.newsletter-form button {
  border: none;
  cursor: pointer;
  background: #ffffff;
  color: #0f766e;
}

/* Footer */
footer {
  background: #020617;
  color: #94a3b8;
  padding: 38px 0;
  font-size: 14px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  color: white;
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  gap: 18px;
  font-weight: 700;
}

.news-card-image {
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-radius: 16px;
  margin-bottom: 18px;
  display: block;
}