:root {
  --primary1: #f97316;
  --primary2: #196abb;
  --primary: #2563eb;
  /* #ff5a2c */
  --dark: #1f2933;
  --gray: #6b7280;
  --bg: #f9fafb;
  --white: #ffffff;
  --blue: #2563eb;
}

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

  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
}

html,
body {
  max-width: 100%;
  /* overflow-x: hidden; */
}

body {
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  font-size: 16px;
}

/* ====== LỚP PHỦ NỀN (OVERLAY) ====== */
/* .menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 998;
  touch-action: none;
  overscroll-behavior: contain;
} */

/* Khi Overlay bật */
/* .menu-overlay.active {
  opacity: 1;
  visibility: visible;
} */

/* ====== MENU SLIDE-OUT ====== */
/* .menu {
  position: fixed;
  top: 0;
  right: -300px;
  
  width: 280px;
  height: 100vh;
  background-color: #ffffff;
  padding: 60px 24px 24px 24px;
  box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: right 0.3s ease;
  z-index: 999;
  box-sizing: border-box;
} */

/* Khi Menu bật */
.menu.active {
  right: 0;
  /* Trượt vào màn hình */
}

/* ====== NÚT CLOSE (X) ====== */
.menu .close-btn {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  font-size: 28px;
  font-weight: bold;
  color: #334155;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  transition: color 0.2s ease;
}

.menu .close-btn:hover {
  color: #ef4444;
  /* Đổi sang màu đỏ khi hover */
}