/* =============================================
   HIGHWAY 404 PROJECT WEBSITE
   Main Stylesheet
   ============================================= */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@300;400;500;600;700&display=swap');

/* ---- CSS Variables ---- */
:root {
  --primary:        #1a6b9a;
  --primary-dark:   #0d4f78;
  --primary-light:  #e8f4fd;
  --secondary:      #4eb8a0;
  --accent:         #f4a623;
  --danger:         #e63946;
  --bg:             #f5f7fa;
  --white:          #ffffff;
  --text:           #2c3e50;
  --text-light:     #6b7c8d;
  --border:         #dce4ec;
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.07);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.13);
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      16px;
  --transition:     0.2s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'IBM Plex Sans Thai', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ---- Layout Helpers ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 56px 0;
}
.section-alt {
  background: var(--primary-light);
}

/* ---- Section Title ---- */
.section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-dark);
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 14px;
  position: relative;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  background: var(--secondary);
  border-radius: 2px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 9px 22px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: 'IBM Plex Sans Thai', sans-serif;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-secondary:hover { background: var(--primary-light); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #c0303a; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

/* ---- Cards ---- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ---- Badge ---- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.badge-new   { background: var(--danger); color: #fff; }
.badge-info  { background: var(--primary-light); color: var(--primary); }

/* ---- Icon Circle ---- */
.icon-circle {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.icon-circle svg { width: 36px; height: 36px; fill: var(--primary); }

/* ---- Page Hero (for inner pages) ---- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--secondary) 100%);
  padding: 52px 0 42px;
  color: #fff;
  margin-bottom: 0;
}
.page-hero h1 { font-size: 28px; font-weight: 700; }
.page-hero .breadcrumb { font-size: 14px; opacity: 0.75; margin-top: 6px; }
.page-hero .breadcrumb a { opacity: 0.85; }
.page-hero .breadcrumb span { margin: 0 6px; }

/* ---- Responsive Grid ---- */
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 28px; }

/* ---- Alerts ---- */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 14px;
}
.alert-success { background: #e6f9f0; color: #1a7a4a; border-left: 4px solid #1a7a4a; }
.alert-error   { background: #fdecea; color: #b91c1c; border-left: 4px solid #b91c1c; }
.alert-info    { background: var(--primary-light); color: var(--primary-dark); border-left: 4px solid var(--primary); }

/* ---- Form ---- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: 'IBM Plex Sans Thai', sans-serif;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,107,154,0.12);
}
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { cursor: pointer; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table th {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--border);
}
table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table tr:hover td { background: #f8fbfe; }

/* ---- Visitor Counter ---- */
.counter-digits { display: flex; gap: 3px; }
.digit {
  background: var(--primary);
  color: #fff;
  width: 24px;
  height: 30px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .section { padding: 36px 0; }
  .section-title { font-size: 20px; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}