/* ===== Design System: Clean Green — Inspired by EcoTrack ===== */
:root {
  --bg: #ffffff;
  --bg-soft: #F0FDF4;
  --bg-section: #FAFAFA;
  --card-bg: #ffffff;
  --text: #1A1A1A;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;
  --border: #E5E7EB;
  --border-green: #BBF7D0;
  --green-dark: #166534;
  --green: #16A34A;
  --green-light: #22C55E;
  --green-bg: #DCFCE7;
  --green-badge: #F0FDF4;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --max-w: 1140px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== Header ===== */
.header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 32px;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px; height: 40px;
  background: var(--green);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: white;
  flex-shrink: 0;
}

.logo-icon svg { width: 22px; height: 22px; }

.logo h1 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1px;
}

.stat-badge {
  background: var(--green-bg);
  color: var(--green-dark);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border-green);
}

/* ===== Search ===== */
.search-wrapper {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%; transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 13px 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.1);
}

.search-input::placeholder { color: var(--text-muted); }

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%; transform: translateY(-50%);
  background: none; border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: none;
  transition: var(--transition);
}

.search-clear:hover { color: var(--text); background: var(--bg-section); }
.search-clear.visible { display: flex; }

/* ===== Main ===== */
.main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 32px 60px;
}

/* ===== Filters ===== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.chip {
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.chip:hover {
  border-color: var(--green);
  color: var(--green-dark);
  background: var(--green-badge);
}

.chip.active {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: white;
  font-weight: 600;
}

/* ===== Results Info ===== */
.results-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card:hover {
  border-color: var(--border-green);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.card-icon {
  width: 44px; height: 44px;
  background: var(--green-bg);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--green-dark);
  flex-shrink: 0;
}

.card-icon svg { width: 22px; height: 22px; }

.card-info { flex: 1; min-width: 0; }

.card-code {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.card-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 3px;
  line-height: 1.35;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.card-dept {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--green-dark);
  background: var(--green-badge);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-green);
}

.card-action {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-action svg { width: 16px; height: 16px; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-top: 16px;
  color: var(--text);
}

.empty-state p {
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--card-bg);
  border-radius: var(--radius);
  max-width: 500px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  transform: translateY(16px) scale(0.98);
  transition: all 0.25s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}

.modal-close:hover { background: var(--border); color: var(--text); }

.modal-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.modal-icon {
  width: 52px; height: 52px;
  background: var(--green-bg);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--green-dark);
  flex-shrink: 0;
}

.modal-icon svg { width: 26px; height: 26px; }

.modal-code {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.5px;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 2px;
}

.modal-desc {
  color: var(--text-secondary);
  font-size: 0.93rem;
  margin-bottom: 24px;
  line-height: 1.6;
}

.modal-section h3 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.modal-section h3 svg { color: var(--green); }

.modal-instructions {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.modal-instructions li {
  counter-increment: step;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.modal-instructions li::before {
  content: counter(step);
  min-width: 28px; height: 28px;
  background: var(--green-bg);
  border: 1px solid var(--border-green);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--green-dark);
  flex-shrink: 0;
}

.btn-copy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 24px;
  background: var(--green-dark);
  color: white;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all var(--transition);
  border: none;
}

.btn-copy:hover {
  background: var(--green);
  box-shadow: 0 4px 14px rgba(22, 101, 52, 0.25);
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  background: var(--bg-section);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  opacity: 0;
  animation: fadeInUp 0.35s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.0s; }
.card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5) { animation-delay: 0.2s; }
.card:nth-child(6) { animation-delay: 0.25s; }
.card:nth-child(7) { animation-delay: 0.3s; }
.card:nth-child(8) { animation-delay: 0.35s; }
.card:nth-child(9) { animation-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-content { padding: 16px 20px; }
  .header-top { flex-direction: column; align-items: flex-start; gap: 10px; }
  .logo h1 { font-size: 1.2rem; }
  .main { padding: 20px 20px 48px; }
  .card-grid { grid-template-columns: 1fr; }
  .modal { padding: 24px; margin: 10px; }
}

@media (max-width: 480px) {
  .filters { gap: 6px; }
  .chip { padding: 6px 14px; font-size: 0.8rem; }
  .card-grid { gap: 12px; }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}