:root{
  --bg: #ffffff;
  --card-bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --accent: #e76f51;
  --card-shadow: 0 6px 18px rgba(18, 20, 22, 0.06);
  --glass: rgba(255,255,255,0.6);
  --max-width: 1100px;
}

body.dark-mode{
  --bg: #0b1220;
  --card-bg: #0f1724;
  --text: #e6eef6;
  --muted: #9aa6b2;
  --accent: #ffb703;
  --card-shadow: 0 8px 20px rgba(2,6,23,0.6);
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, var(--bg), var(--bg));
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}

/* Layout */
.container{
  width:90%;
  max-width:var(--max-width);
  margin:0 auto;
}

/* Header */
.site-header {
  background: url("../images/light.png") no-repeat center center;
  padding: 30px 40px;
  background-size: cover;
  background-position: center;
  transition: background 0.3s ease;
}

/* Header nền cho dark mode */
body.dark-mode .site-header {
  background: url("../images/light.png") no-repeat center center;
  background-size: cover;
  background-position: center;
}

/* Nội dung bên trong header */
.header-inner {
  display: flex;
  justify-content: space-between; 
  align-items: center;
  width: 100%;
  padding: 40px 40px;
  margin: 0;
  background: transparent;
  border-radius: 0;
  position: relative;
  z-index: 2;
}

.header-inner {
  position: relative;
}

.header-inner .logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* Responsive banner */
@media (max-width:768px){
  .site-header {
    height: 160px;
    background-position: top;
  }
}

.logo{
  margin:0;
  font-size:22px;
  letter-spacing:0.6px;
  color:var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
}

.logo img {
  width: 200px;
  height: 180px;
}

.logo-text{
  font-size: 55px;
  letter-spacing: 0.5px;
}

/* Toggle */
.toggle {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

/* Ẩn checkbox */
.toggle input {
  display: none;
}

/* Thanh trượt nền */
.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  border-radius: 999px;
  background: #ddd;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  transition: background 0.3s ease;
}

/* Nút tròn */
.slider::before {
  content: '☀️';
  position: absolute;
  left: 3px;
  top: 2px;
  width: 24px;
  height: 24px;
  font-size: 16px;
  line-height: 24px;
  text-align: center;
  border-radius: 50%;
  background: white;
  transition: transform 0.35s ease, background 0.3s ease, content 0.3s ease;
}

/* Khi bật dark mode */
.toggle input:checked + .slider {
  background: #555;
}

/* Nút tròn di chuyển sang phải + đổi thành mặt trăng */
.toggle input:checked + .slider::before {
  transform: translateX(24px);
  content: '🌙';
  background: #f1c40f;
}

/* Dark mode */
body.dark-mode .slider {
  background: #666;
}
body.dark-mode .toggle input:checked + .slider {
  background: #999;
}

/* Main grid */
.main-grid{
  display:grid;
  grid-template-columns: 280px 1fr;
  gap:28px;
  padding:28px 0 60px;
}

/* Sidebar */
.sidebar{
  background:var(--card-bg);
  padding:18px;
  border-radius:14px;
  box-shadow:var(--card-shadow);
  position:sticky;
  top:18px;
  align-self:start;
}
.search-box input{
  width:100%;
  padding:10px 12px;
  border-radius:8px;
  border:1px solid rgba(0,0,0,0.06);
  background:var(--glass);
  color:var(--text);
  margin-top:8px;
  outline:none;
}
.search-box .hint{color:var(--muted); font-size:12px}
.filters h3, .search-box h3{margin:0 0 8px 0}

/* Category checkboxes */
.category-list{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:8px;
}
.category-item{
  display:flex;
  gap:8px;
  align-items:center;
}
.category-item input[type="checkbox"]{
  width:16px; height:16px;
  accent-color: var(--accent);
}

/* Cards list */
.cards{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap:18px;
}
.card{
  background:var(--card-bg);
  border-radius:14px;
  overflow:hidden;
  box-shadow:var(--card-shadow);
  transition:transform .22s ease, box-shadow .22s ease;
  cursor:pointer;
  display:flex;
  flex-direction:column;
}
.card:hover{
  transform:translateY(-6px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}
.card img{
  width:100%;
  height:150px;
  object-fit:cover;
  display:block;
}
.card-body{
  padding:12px;
}
.card-title{
  margin:0;
  font-size:16px;
  font-weight:600;
}
.card-sub{
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
}

/* Modal */
.modal.hidden{display:none}
.modal{
  position:fixed;
  inset:0;
  z-index:1000;
  display:flex;
  align-items:center;
  justify-content:center;
}
.modal-overlay{
  position:absolute;
  inset:0;
  background:rgba(2,6,23,0.5);
}
.modal-content{
  position:relative;
  max-width:900px;
  width:95%;
  max-height:90vh;
  overflow:auto;
  background:var(--card-bg);
  border-radius:12px;
  padding:20px;
  box-shadow:var(--card-shadow);
  z-index:1001;
}
.modal-close{
  position:absolute;
  right:12px;
  top:12px;
  background:transparent;
  border:none;
  color:var(--muted);
  font-size:18px;
  cursor:pointer;
}
.modal-body img{
  width:100%;
  max-height:360px;
  object-fit:cover;
  border-radius:8px;
}
.modal-section{margin-top:14px}
.modal-section h4{margin:0 0 8px 0}

/* Ingredients/steps list */
.ingredients, .steps{
  padding-left:16px;
}
.steps li{margin-bottom:8px}

/* Footer */
.site-footer{
  border-top:1px solid rgba(0,0,0,0.06);
  padding:18px 0;
  margin-top:30px;
  text-align:center;
  color:var(--muted);
}
body.dark-mode .site-footer{border-top-color: rgba(255,255,255,0.03)}

/* Responsive */
@media (max-width:880px){
  .main-grid{grid-template-columns:1fr; padding:16px 0}
  .sidebar{position:static}
}

/* --- Đẩy sidebar sát mép trái --- */
.main-grid {
  grid-template-columns: 280px 1fr;
  gap: 28px;
  padding: 28px 0 60px;
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.container {
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding-left: 28px;
  padding-right: 28px;
}
/* --- Responsive sidebar & search --- */
@media (max-width: 880px) {
  .main-grid {
    grid-template-columns: 1fr;
    padding: 16px 0;
  }

  .sidebar {
    position: static;
    width: 100%;
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: none;
    border: 1px solid rgba(0,0,0,0.05);
  }

  /* Search box full width */
  .search-box input {
    width: 100%;
    font-size: 14px;
    padding: 10px;
  }

  /* Category list hiển thị 2 cột nhỏ */
  .category-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
  }

  .category-item {
    font-size: 14px;
  }

  /* Thu nhỏ card */
  .cards {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
  }

  .card img {
    height: 130px;
  }

  .card-body {
    padding: 10px;
  }

  .card-title {
    font-size: 15px;
  }

  .card-sub {
    font-size: 12px;
  }
}

/*----(mobile <600px) --- */
@media (max-width: 600px) {
  .sidebar {
    padding: 12px;
  }

  .search-box h3,
  .filters h3 {
    font-size: 15px;
  }

  .category-list {
    grid-template-columns: 1fr 1fr;
  }

  .search-box input {
    font-size: 13px;
    padding: 8px 10px;
  }

  .card img {
    height: 120px;
  }

  .card-title {
    font-size: 14px;
  }
}