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

html,
body {
  height: 100%;
  font-family: 'Inter', sans-serif;
  background-color: #0b0f14;
  color: #e6e6e6;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 24px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}

.logo {
  font-weight: 600;
  font-size: 20px;
  color: #5cff9a;
}

.navbar nav a {
  margin-left: 32px;
  text-decoration: none;
  color: #b5b5b5;
  font-size: 14px;
}

.navbar nav a:hover {
  color: #ffffff;
}

.lang-switch {
  position: fixed;
  top: 30px;
  right: 80px;
  /* chỉnh nếu bị đụng menu */
  display: flex;
  gap: 10px;
  z-index: 1000;
}

.flag {
  width: 28px;
  height: 20px;
  cursor: pointer;
  border-radius: 3px;
  transition: 0.3s;
}

.flag:hover {
  transform: scale(1.1);
  box-shadow: 0 0 10px #00ffcc;
}

.flag.active {
  box-shadow: 0 0 12px #00ffcc;
  transform: scale(1.1);
}

/* icon 3 gạch */
.menu-icon {
  width: 30px;
  cursor: pointer;
  position: fixed;
  top: 30px;
  right: 30px;
  z-index: 1001;
}

.menu-icon span {
  display: block;
  height: 3px;
  background: white;
  margin: 6px 0;
  transition: 0.3s;
}

/* side menu */
.side-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: #111;
  display: flex;
  flex-direction: column;
  padding-top: 120px;
  transition: 0.4s ease;
  z-index: 1000;
}

/* khi mở */
.side-menu.active {
  right: 0;
}

/* nút bên trong */
.menu-btn {
  text-decoration: none;
  color: white;
  padding: 18px 40px;
  margin: 10px 20px;
  border-radius: 8px;
  background: #1a1a1a;
  transition: 0.3s;
  font-size: 18px;
}

.menu-btn:hover {
  background: #00ffcc;
  color: black;
  box-shadow: 0 0 15px #00ffcc;
}

/* ========== MAIN SECTION =========== */
.contact-title {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 24px;
  text-align: center;
  color: #5cff9a;
  margin-top: 120px;
}

.contact-section {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 70vh;
}

.contact-card {
  width: 90%;
  max-width: 800px;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  border-radius: 10px;
  border: 2px solid #4aa3ff;
  text-decoration: none;
  color: #8fd3ff;
  transition: 0.25s ease;
}

.contact-btn i {
  font-size: 20px;
  width: 25px;
}

.contact-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(0, 170, 255, 0.5);
  background: linear-gradient(180deg, #233b4d, #142833);
}

.contact-icon {
  background: transparent;
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

/* ===== ROOT ===== */
.fa-github {
  color: #ffffff;
}

.fa-facebook-f {
  color: #1877F2;
}

.fa-discord {
  color: #5865F2;
}

.fa-tiktok {
  color: #ff0050;
}

.fa-envelope {
  color: #EA4335;
}

/* ===== FOOTER ===== */
footer,
.contact-description {
  text-align: center;
  margin-top: 18px;
  color: #5cff9a;
  font-size: 20px;
  alignment-baseline: middle;
}