:root {
  --navy: #0b2545;
  --navy-light: #12386b;
  --accent: #f5a623;
  --accent-dark: #d98b0f;
  --text: #1c2733;
  --bg-light: #f7f9fb;
  --white: #ffffff;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg-light);
  line-height: 1.6;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-wrap {
  position: relative;
  width: min(400px, 55vw);
  height: 36px;
}

.site-logo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 6px 12px rgba(0,0,0,0.35));
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  border-radius: 50px;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  color: var(--navy);
}

.btn-small {
  background: var(--accent);
  color: var(--navy);
  padding: 0.5rem 1.2rem;
  font-size: 0.9rem;
  white-space: nowrap;
}

.btn-small .btn-icon {
  font-size: 1.1rem;
}

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

.btn-cta {
  background: var(--accent);
  color: var(--navy);
  padding: 1.1rem 2.6rem;
  font-size: 1.35rem;
  box-shadow: 0 8px 20px rgba(11, 37, 69, 0.28);
}

.btn-cta .btn-icon {
  font-size: 1.2rem;
}

.btn-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 24px rgba(11, 37, 69, 0.35);
}

.btn-bottom {
  display: block;
  width: fit-content;
  margin: 3rem auto 1rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(92vh - 150px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: url("images/hero-airport.jpg") center center / cover no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,37,69,0.55) 0%, rgba(11,37,69,0.35) 45%, rgba(11,37,69,0.75) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 2rem 1.25rem;
  max-width: 900px;
}

.hero-content h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 800;
  line-height: 1.08;
  text-shadow: 0 2px 18px rgba(0,0,0,0.5);
  margin-bottom: 1.1rem;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  max-width: 640px;
  margin: 0 auto 2.2rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 2px solid rgba(255,255,255,0.75);
  border-radius: 50%;
  color: var(--white);
  font-size: 1.3rem;
  text-decoration: none;
  opacity: 0.9;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* Committee photo grid */
.grid-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
}

.member img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(11, 37, 69, 0.15);
}

.member p {
  margin-top: 0.7rem;
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--navy);
}

/* Petition text */
.petition-text {
  background: var(--white);
  padding: 4rem 1.25rem 3rem;
}

.container {
  max-width: 760px;
  margin: 0 auto;
}

.petition-text h2 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: var(--navy);
  margin-bottom: 1.75rem;
  text-align: center;
}

.petition-text p {
  font-size: 1.08rem;
  margin-bottom: 1.3rem;
  color: var(--text);
}

.text-emphasis {
  font-weight: 700;
  color: var(--navy);
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
}

.committee {
  background: var(--white);
  padding: 3.5rem 1.25rem;
  text-align: center;
}

.committee h3 {
  font-size: 1.3rem;
  color: var(--navy);
  margin-bottom: 1.75rem;
}

/* Footer */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
}

.footer-url {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}

@media (max-width: 600px) {
  .topbar-title {
    font-size: 0.9rem;
  }
  .btn-cta {
    padding: 1rem 2rem;
    font-size: 1.15rem;
  }
}