/* ─── CSS Variables ──────────────────────────────────────────────────────────── */
:root {
  --color-primary:        #D0021B;
  --color-primary-dark:   #A30016;
  --color-primary-light:  #FDECEA;
  --color-secondary:      #1A1A2E;
  --color-accent:         #0057B8;
  --color-accent-light:   #EBF2FC;

  --color-bg:             #F4F6F9;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F8F9FC;
  --color-border:         #E2E8F0;
  --color-border-dark:    #CBD5E1;

  --color-text-primary:   #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted:     #94A3B8;

  --color-success:        #16A34A;
  --color-success-light:  #DCFCE7;
  --color-warning:        #D97706;
  --color-warning-light:  #FEF3C7;
  --color-danger:         #DC2626;
  --color-danger-light:   #FEE2E2;
  --color-info:           #0284C7;
  --color-info-light:     #E0F2FE;

  --sidebar-width:        220px;
  --topbar-height:        52px;

  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
}

/* ─── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--color-bg); color: var(--color-text-primary); }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ─── App Shell ──────────────────────────────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ─── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-secondary);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand-logo    { width: 32px; height: 32px; object-fit: contain; border-radius: 6px; }
.brand-name    { font-size: 14px; font-weight: 600; color: #fff; line-height: 1.2; }
.brand-sub     { font-size: 10px; color: rgba(255,255,255,0.45); margin-top: 1px; }

.sidebar-nav   { flex: 1; padding: 12px 8px; }
.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  padding: 12px 8px 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 2px;
  transition: background 0.15s, color 0.15s;
  cursor: pointer;
  text-decoration: none;
}
.nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; text-decoration: none; }
.nav-item.active { background: var(--color-primary); color: #fff; font-weight: 500; }
.nav-icon { width: 16px; text-align: center; font-size: 12px; flex-shrink: 0; }

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-chip  { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.user-av    { width: 30px; height: 30px; border-radius: 50%; background: var(--color-primary); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; color: #fff; flex-shrink: 0; }
.user-name  { font-size: 12px; font-weight: 500; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role  { font-size: 10px; color: rgba(255,255,255,0.45); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.logout-btn { background: none; border: none; color: rgba(255,255,255,0.4); cursor: pointer; font-size: 14px; padding: 4px; border-radius: 4px; transition: color 0.15s; flex-shrink: 0; }
.logout-btn:hover { color: #fff; }

/* ─── Main Content ───────────────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title   { font-size: 15px; font-weight: 600; color: var(--color-text-primary); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }

.page-content { padding: 24px; flex: 1; }

/* ─── Flash messages ─────────────────────────────────────────────────────────── */
.flash { padding: 12px 24px; font-size: 13px; font-weight: 500; border-bottom: 1px solid transparent; }
.flash-success { background: var(--color-success-light); color: var(--color-success); border-color: #86EFAC; }
.flash-error   { background: var(--color-danger-light);  color: var(--color-danger);  border-color: #FCA5A5; }
.flash-info    { background: var(--color-info-light);    color: var(--color-info);    border-color: #7DD3FC; }

/* ─── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title  { font-size: 14px; font-weight: 600; color: var(--color-text-primary); }

/* ─── Stats grid ─────────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card  { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 18px; box-shadow: var(--shadow-sm); }
.stat-label { font-size: 12px; color: var(--color-text-secondary); margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 600; color: var(--color-text-primary); line-height: 1; }
.stat-sub   { font-size: 11px; color: var(--color-text-muted); margin-top: 4px; }

/* ─── Two-col layout ─────────────────────────────────────────────────────────── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.btn:hover { background: var(--color-surface-2); text-decoration: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-success { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.btn-success:hover { background: #15803D; }
.btn-danger  { background: var(--color-danger);  border-color: var(--color-danger);  color: #fff; }
.btn-danger:hover  { background: #B91C1C; }
.btn-sm      { padding: 5px 10px; font-size: 12px; }
.btn-full    { width: 100%; justify-content: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ─── Forms ──────────────────────────────────────────────────────────────────── */
.form-group  { margin-bottom: 16px; }
.form-row    { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3  { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .form-row, .form-row-3 { grid-template-columns: 1fr; } }

label        { display: block; font-size: 12px; font-weight: 500; color: var(--color-text-secondary); margin-bottom: 5px; }
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="datetime-local"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,87,184,0.10);
}
input::placeholder, textarea::placeholder { color: var(--color-text-muted); }
textarea     { resize: vertical; min-height: 90px; }
.input-hint  { font-size: 11px; color: var(--color-text-muted); margin-top: 4px; }
.input-error { font-size: 11px; color: var(--color-danger); margin-top: 4px; }

.check-group { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--color-text-primary); margin-bottom: 10px; cursor: pointer; }
.check-group input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; }

/* Input with toggle button (password) */
.input-with-toggle { position: relative; }
.input-with-toggle input { padding-right: 42px; }
.toggle-pw { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; color: var(--color-text-muted); font-size: 16px; padding: 0; }

/* ─── Tables ─────────────────────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { text-align: left; padding: 6px 8px; font-size: 11px; font-weight: 600; color: var(--color-text-secondary); border-bottom: 1px solid var(--color-border); white-space: nowrap; }
.data-table td { padding: 7px 8px; border-bottom: 1px solid var(--color-border); color: var(--color-text-primary); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--color-surface-2); }
.data-table .actions-cell { display: flex; gap: 6px; align-items: center; }

/* Visitor cell */
.visitor-cell { display: flex; align-items: center; gap: 10px; }
.cell-name    { font-size: 13px; font-weight: 500; color: var(--color-text-primary); }
.cell-sub     { font-size: 11px; color: var(--color-text-muted); margin-top: 1px; }

/* Avatar */
.av           { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; flex-shrink: 0; }
.av-pending   { background: #FEF3C7; color: #92400E; }
.av-accepted  { background: #DCFCE7; color: #14532D; }
.av-arrived   { background: #DBEAFE; color: #1E3A8A; }
.av-inside    { background: #EDE9FE; color: #3B0764; }
.av-departed  { background: #F1F5F9; color: #475569; }
.av-declined  { background: #FEE2E2; color: #7F1D1D; }
.av-cancelled { background: #F1F5F9; color: #475569; }
.av-default   { background: #E2E8F0; color: #475569; }

/* ─── Badges ─────────────────────────────────────────────────────────────────── */
.badge        { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: capitalize; white-space: nowrap; }
.badge-pending     { background: var(--color-warning-light); color: #92400E; }
.badge-pending_hod { background: #FEF3C7; color: #78350F; border: 1px solid #F59E0B; }
.badge-accepted  { background: var(--color-success-light); color: #14532D; }
.badge-arrived   { background: var(--color-info-light);    color: #0C4A6E; }
.badge-inside    { background: #EDE9FE; color: #3B0764; }
.badge-departed  { background: #F1F5F9; color: var(--color-text-secondary); }
.badge-declined  { background: var(--color-danger-light);  color: #7F1D1D; }
.badge-cancelled { background: #F1F5F9; color: var(--color-text-secondary); }
.badge-paid      { background: var(--color-success-light); color: #14532D; }
.badge-failed    { background: var(--color-danger-light);  color: #7F1D1D; }
.badge-link_sent { background: var(--color-info-light);    color: #0C4A6E; }
.badge-approved  { background: var(--color-warning-light); color: #92400E; }
.badge-expired   { background: #F1F5F9; color: var(--color-text-secondary); }

/* ─── Alerts ─────────────────────────────────────────────────────────────────── */
.alert        { padding: 12px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-error  { background: var(--color-danger-light);  color: var(--color-danger);  border-color: #FCA5A5; }
.alert-success{ background: var(--color-success-light); color: var(--color-success); border-color: #86EFAC; }
.alert-warning{ background: var(--color-warning-light); color: var(--color-warning); border-color: #FCD34D; }
.alert-info   { background: var(--color-info-light);    color: var(--color-info);    border-color: #7DD3FC; }

/* ─── Empty state ────────────────────────────────────────────────────────────── */
.empty-state    { text-align: center; padding: 60px 24px; color: var(--color-text-muted); }
.empty-state-sm { text-align: center; padding: 24px; font-size: 13px; color: var(--color-text-muted); }

/* ─── Quick actions ──────────────────────────────────────────────────────────── */
.quick-actions    { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quick-action-btn { display: flex; align-items: center; gap: 10px; padding: 14px; border: 1px solid var(--color-border); border-radius: var(--radius-md); text-decoration: none; color: var(--color-text-primary); font-size: 13px; font-weight: 500; transition: background 0.15s, border-color 0.15s; }
.quick-action-btn:hover { background: var(--color-accent-light); border-color: var(--color-accent); text-decoration: none; }
.qa-icon { width: 32px; height: 32px; border-radius: var(--radius-sm); background: var(--color-primary-light); color: var(--color-primary); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; }

/* ─── Filters bar ────────────────────────────────────────────────────────────── */
.filters-bar  { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; align-items: center; }
.filters-bar input, .filters-bar select { width: auto; min-width: 160px; }
.filters-bar .spacer { flex: 1; }

/* ─── Permission checkboxes grid ─────────────────────────────────────────────── */
.perm-grid        { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px; margin-top: 8px; }
.perm-group-title { font-size: 11px; font-weight: 600; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.07em; margin: 14px 0 6px; grid-column: 1 / -1; }

/* ─── Login page ─────────────────────────────────────────────────────────────── */
.login-body   { background: var(--color-bg); display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.login-shell  { width: 100%; max-width: 400px; }
.login-brand  { text-align: center; margin-bottom: 28px; }
.login-logo   { height: 56px; margin-bottom: 12px; }
.login-brand-name { font-size: 20px; font-weight: 600; color: var(--color-text-primary); }
.login-brand-sub  { font-size: 13px; color: var(--color-text-secondary); margin-top: 2px; }
.login-card   { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-md); }
.login-title  { font-size: 20px; font-weight: 600; margin-bottom: 20px; }
.login-form   .btn-primary { margin-top: 4px; padding: 11px; font-size: 14px; }
.login-footer { text-align: center; font-size: 12px; color: var(--color-text-muted); margin-top: 20px; }

/* ─── Error pages ────────────────────────────────────────────────────────────── */
.error-shell  { text-align: center; max-width: 460px; width: 100%; }
.error-code   { font-size: 80px; font-weight: 700; color: var(--color-primary); line-height: 1; }
.error-title  { font-size: 22px; font-weight: 600; margin: 12px 0 8px; }
.error-sub    { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }
.error-detail { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 12px; margin-top: 16px; font-size: 12px; font-family: var(--font-mono); text-align: left; white-space: pre-wrap; word-break: break-all; color: var(--color-danger); }

/* ─── Timeline ───────────────────────────────────────────────────────────────── */
.timeline         { padding-left: 18px; position: relative; }
.timeline-item    { position: relative; padding-bottom: 18px; }
.timeline-item::before { content: ''; position: absolute; left: -14px; top: 5px; width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); }
.timeline-item::after  { content: ''; position: absolute; left: -11px; top: 13px; width: 1px; height: calc(100% - 8px); background: var(--color-border); }
.timeline-item:last-child::after { display: none; }
.timeline-time   { font-size: 11px; color: var(--color-text-muted); margin-bottom: 2px; }
.timeline-text   { font-size: 13px; color: var(--color-text-primary); }

/* ─── Pagination ─────────────────────────────────────────────────────────────── */
.pagination  { display: flex; gap: 6px; align-items: center; justify-content: center; padding: 16px 0 4px; flex-wrap: wrap; }
.page-btn    { padding: 6px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 13px; cursor: pointer; background: var(--color-surface); color: var(--color-text-primary); text-decoration: none; }
.page-btn:hover   { background: var(--color-surface-2); text-decoration: none; }
.page-btn.active  { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.page-btn:disabled{ opacity: 0.4; cursor: not-allowed; }

/* ─── Sidebar logout button ──────────────────────────────────────────────────── */
.sidebar-logout {
  padding: 10px 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.logout-full-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: rgba(208,2,27,0.15);
  border: 1px solid rgba(208,2,27,0.3);
  border-radius: var(--radius-sm);
  color: #FF8A8A;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: left;
}
.logout-full-btn:hover {
  background: rgba(208,2,27,0.35);
  color: #fff;
}
.logout-icon {
  font-size: 14px;
  flex-shrink: 0;
}


/* ─── Mobile responsive sidebar ──────────────────────────────────────────────── */
.sidebar-hamburger { display: none; background: none; border: none; font-size: 22px; color: var(--color-text-primary); cursor: pointer; padding: 4px 8px; }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 99; }
.sidebar-overlay.open { display: block; }

@media (max-width: 860px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .sidebar-hamburger { display: inline-block; }
  .topbar { padding-left: 12px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .filters-bar { flex-wrap: wrap; }
  .filters-bar input, .filters-bar select { min-width: 0; flex: 1 1 45%; }
}

@media (max-width: 500px) {
  .stats-grid { grid-template-columns: 1fr; }
  .data-table { font-size: 11px; }
}