:root {
  --green-dark:  #0d4f2e;
  --green-mid:   #166534;
  --green-light: #7dc232;
  --white:       #ffffff;
  --gray-50:     #f9fafb;
  --gray-100:    #f3f4f6;
  --gray-200:    #e5e7eb;
  --gray-600:    #4b5563;
  --gray-700:    #374151;
  --gray-900:    #111827;
  --red:         #dc2626;
  --amber:       #d97706;
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 10px 40px rgba(0,0,0,.15);
  --radius:      12px;
  --transition:  .25s ease;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  color: var(--gray-700);
  background: var(--gray-50);
  line-height: 1.6;
}

img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.4rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: .92rem;
  transition: var(--transition);
}
.btn-primary { background: var(--green-dark); color: var(--white); }
.btn-primary:hover { background: var(--green-mid); }
.btn-block { width: 100%; }
.btn-outline-dark {
  background: transparent;
  border: 1.5px solid var(--gray-200);
  color: var(--gray-700);
}
.btn-outline-dark:hover { background: var(--gray-100); }

.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.1rem; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--gray-700); }
.form-group input {
  padding: .8rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-family: inherit;
  font-size: .95rem;
  background: var(--gray-50);
  outline: none;
  transition: var(--transition);
}
.form-group input:focus {
  border-color: var(--green-light);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(125,194,50,.15);
}

/* ===== LOGIN ===== */
.admin-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--green-dark), var(--green-mid));
  padding: 1.5rem;
}
.admin-login[hidden] { display: none; }
.admin-login-box {
  width: 100%;
  max-width: 400px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2rem;
  text-align: center;
}
.admin-login-logo { width: 64px; margin: 0 auto 1rem; }
.admin-login-box h1 { margin: 0 0 .4rem; font-size: 1.4rem; color: var(--gray-900); }
.admin-login-box > p { margin: 0 0 1.5rem; font-size: .9rem; color: var(--gray-600); }
.admin-login-box form { text-align: left; }
.admin-login-error {
  min-height: 1.2em;
  margin-top: .8rem;
  font-size: .85rem;
  color: var(--red);
  text-align: center;
}

/* ===== DASHBOARD ===== */
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem 1.75rem;
  position: sticky;
  top: 0;
  z-index: 10;
}
.admin-header-left { display: flex; align-items: center; gap: .7rem; font-weight: 700; color: var(--green-dark); }
.admin-header-left img { width: 34px; }
.admin-header-right { display: flex; align-items: center; gap: 1rem; }
.admin-user-email { font-size: .85rem; color: var(--gray-600); }

.admin-main { max-width: 1200px; margin: 0 auto; padding: 1.75rem; }

.admin-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.admin-stat-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.admin-stat-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(13,79,46,.08);
  color: var(--green-dark);
  border-radius: 10px;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.admin-stat-card span { display: block; font-size: 1.4rem; font-weight: 700; color: var(--gray-900); }
.admin-stat-card p { margin: 0; font-size: .8rem; color: var(--gray-600); }

.admin-tabs {
  display: flex;
  gap: .5rem;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 1.25rem;
  overflow-x: auto;
}
.admin-tab {
  background: none;
  border: none;
  padding: .8rem 1.2rem;
  font-weight: 600;
  font-size: .9rem;
  color: var(--gray-600);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: var(--transition);
}
.admin-tab:hover { color: var(--green-dark); }
.admin-tab.active { color: var(--green-dark); border-color: var(--green-dark); }

.admin-toolbar {
  display: flex;
  gap: .8rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.admin-search {
  flex: 1;
  min-width: 220px;
  display: flex;
  align-items: center;
  gap: .6rem;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  padding: .65rem 1rem;
}
.admin-search i { color: var(--gray-600); }
.admin-search input { flex: 1; border: none; outline: none; font-family: inherit; font-size: .9rem; background: transparent; }
#statusFilter {
  padding: .65rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-family: inherit;
  font-size: .9rem;
  background: var(--white);
}

.admin-panel { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; }

.admin-table-wrap { overflow-x: auto; }
table.admin-table { width: 100%; border-collapse: collapse; font-size: .87rem; }
table.admin-table th {
  text-align: left;
  padding: .9rem 1.1rem;
  background: var(--gray-50);
  color: var(--gray-600);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}
table.admin-table td {
  padding: .9rem 1.1rem;
  border-bottom: 1px solid var(--gray-100);
  vertical-align: top;
  color: var(--gray-700);
}
table.admin-table tr:last-child td { border-bottom: none; }
table.admin-table tr:hover td { background: var(--gray-50); }

.cell-truncate { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.status-badge {
  display: inline-block;
  padding: .25rem .65rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  text-transform: capitalize;
}
.status-badge.new      { background: rgba(125,194,50,.15); color: var(--green-dark); }
.status-badge.read     { background: rgba(13,79,46,.08);  color: var(--gray-600); }
.status-badge.archived { background: var(--gray-100);      color: var(--gray-600); }

.admin-row-actions { display: flex; gap: .4rem; white-space: nowrap; }
.icon-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--gray-200);
  background: var(--white);
  border-radius: 6px;
  color: var(--gray-600);
  font-size: .8rem;
  transition: var(--transition);
}
.icon-btn:hover { background: var(--gray-100); }
.icon-btn.danger:hover { background: var(--red); color: var(--white); border-color: var(--red); }
.icon-btn.success:hover { background: var(--green-dark); color: var(--white); border-color: var(--green-dark); }

.admin-empty { padding: 3rem 1.5rem; text-align: center; color: var(--gray-600); }
.admin-empty i { font-size: 2rem; margin-bottom: .8rem; color: var(--gray-200); display: block; }

/* ===== DETAIL MODAL ===== */
.admin-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(17,24,39,.55);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  opacity: 0; pointer-events: none;
  transition: var(--transition);
  z-index: 100;
}
.admin-modal-overlay.open { opacity: 1; pointer-events: auto; }
.admin-modal-box {
  background: var(--white);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow-lg);
}
.admin-modal-box .modal-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: var(--gray-100); border-radius: 50%;
  color: var(--gray-600);
}
.detail-section { margin-bottom: 1.25rem; }
.detail-section h4 {
  margin: 0 0 .6rem;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--green-dark);
}
.detail-row { display: flex; justify-content: space-between; gap: 1rem; padding: .35rem 0; border-bottom: 1px dashed var(--gray-100); font-size: .88rem; }
.detail-row span:first-child { color: var(--gray-600); }
.detail-row span:last-child { color: var(--gray-900); font-weight: 500; text-align: right; }
.detail-message { background: var(--gray-50); border-radius: 8px; padding: 1rem; font-size: .9rem; white-space: pre-wrap; }
.detail-repeat-item {
  background: var(--gray-50);
  border-radius: 8px;
  padding: .8rem 1rem;
  margin-bottom: .5rem;
  font-size: .85rem;
}
.detail-repeat-item strong { color: var(--gray-900); }

@media (max-width: 800px) {
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .admin-stats { grid-template-columns: 1fr; }
  .admin-main { padding: 1.25rem; }
  .admin-header { padding: .9rem 1.1rem; }
  .admin-user-email { display: none; }
}