/* ═══════════════════════════════════════════════════════════
   Layout: Sidebar, Topbar, Grid, Responsive
═══════════════════════════════════════════════════════════ */

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

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: fixed; right: 0; top: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--t-med);
}

.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-weight: 700; font-size: 1rem;
}
.sidebar-logo span:first-child { font-size: 1.4rem; }
.sidebar-close { display: none; color: var(--text-2); font-size: 1.1rem; padding: 0.3rem; }

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.5rem;
  display: flex; flex-direction: column; gap: 0.15rem;
  overflow-y: auto;
}
.nav-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--r-sm);
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-2);
  transition: all var(--t-fast);
  position: relative;
}
.nav-item:hover { background: var(--bg-card); color: var(--text-1); }
.nav-item.active {
  background: rgba(67,97,238,0.15);
  color: var(--blue-lt);
}
.nav-item.active::before {
  content: '';
  position: absolute; right: 0; top: 20%; bottom: 20%;
  width: 3px; background: var(--blue);
  border-radius: 3px 0 0 3px;
}
.nav-icon { font-size: 1rem; width: 22px; text-align: center; }

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 0.5rem;
}
.theme-toggle {
  padding: 0.4rem 0.6rem;
  border-radius: var(--r-sm);
  background: var(--bg-card);
  font-size: 1.1rem;
  transition: background var(--t-fast);
}
.theme-toggle:hover { background: var(--bg-card-hover); }
.btn-logout {
  flex: 1;
  padding: 0.45rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.8rem; font-weight: 500;
  color: var(--red);
  background: rgba(239,71,111,0.1);
  border: 1px solid rgba(239,71,111,0.2);
  transition: all var(--t-fast);
  font-family: inherit;
}
.btn-logout:hover { background: rgba(239,71,111,0.2); }

/* ── Main Wrapper ── */
.main-wrapper {
  flex: 1;
  margin-right: var(--sidebar-w);
  display: flex; flex-direction: column;
  min-height: 100vh;
  min-width: 0;
}

/* ── Topbar ── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  backdrop-filter: blur(12px);
}
.menu-btn {
  display: none;
  font-size: 1.3rem; color: var(--text-2);
  padding: 0.25rem;
}
.search-trigger {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem; color: var(--text-2);
  flex: 1; max-width: 400px;
  transition: all var(--t-fast);
}
.search-trigger:hover { border-color: var(--blue); color: var(--text-1); }
.search-trigger kbd {
  margin-right: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-size: 0.72rem;
  font-family: monospace;
}
.topbar-right {
  margin-right: auto;
  display: flex; align-items: center; gap: 0.75rem;
}
.topbar-date { font-size: 0.8rem; color: var(--text-3); }

/* ── Main Content ── */
.main-content {
  flex: 1;
  padding: 1.75rem;
  max-width: 1400px;
  width: 100%;
}

/* ── Page Header ── */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.75rem;
  flex-wrap: wrap; gap: 1rem;
}
.page-title { font-size: 1.4rem; font-weight: 700; }
.page-subtitle { font-size: 0.85rem; color: var(--text-2); margin-top: 0.2rem; }

/* ── Grid Layouts ── */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }

/* ── Filter Bar ── */
.filter-bar {
  display: flex; align-items: center; gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 1.25rem;
}
.filter-bar input,
.filter-bar select {
  width: auto; min-width: 140px; max-width: 200px;
  font-size: 0.82rem;
}
.filter-bar .btn { flex-shrink: 0; }

/* ── Modals ── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: var(--bg-modal);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(8px);
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  width: 100%; max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideDown 0.25s ease;
}
@keyframes slideDown { from { opacity:0; transform: translateY(-20px); } to { opacity:1; transform: translateY(0); } }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg-card);
}
.modal-header h3 { font-size: 1rem; font-weight: 600; }
.modal-close {
  color: var(--text-2); font-size: 1.1rem;
  padding: 0.3rem 0.5rem;
  border-radius: var(--r-sm);
  transition: all var(--t-fast);
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--red); }
.modal-body { padding: 1.5rem; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  margin-top: 1.25rem;
}

/* ── Form Helpers ── */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 500; color: var(--text-2); margin-bottom: 0.4rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ── Search Modal ── */
.search-modal-inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  width: 100%; max-width: 580px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
#search-input {
  border: none; border-bottom: 1px solid var(--border);
  border-radius: 0; font-size: 1rem; padding: 1rem 1.25rem;
  background: transparent;
}
#search-input:focus { box-shadow: none; }
.search-results { max-height: 400px; overflow-y: auto; }
.search-result-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  transition: background var(--t-fast);
}
.search-result-item:hover, .search-result-item.focused {
  background: var(--bg-card-hover);
}
.search-result-type {
  font-size: 0.72rem; color: var(--text-3);
  background: var(--bg-input);
  padding: 0.15rem 0.4rem; border-radius: 4px;
}
.search-result-label { font-size: 0.9rem; font-weight: 500; flex: 1; }
.search-result-sub   { font-size: 0.78rem; color: var(--text-2); }
.search-empty { padding: 2rem; text-align: center; color: var(--text-3); font-size: 0.875rem; }

/* ── Agent Profile Header ── */
.agent-profile-header {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  margin-bottom: 1.5rem;
}
.agent-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.agent-name { font-size: 1.2rem; font-weight: 700; }
.agent-meta { font-size: 0.82rem; color: var(--text-2); margin-top: 0.25rem; }
.agent-debt-badge {
  margin-right: auto;
  text-align: center;
  padding: 0.5rem 1.5rem;
  background: rgba(239,71,111,0.1);
  border: 2px solid var(--red);
  border-radius: var(--r-md);
}
.agent-debt-badge .debt-label { font-size: 0.75rem; color: var(--text-2); }
.agent-debt-badge .debt-value { font-size: 1.4rem; font-weight: 700; color: var(--red); }
.agent-debt-badge.debt-zero { background: rgba(6,214,160,0.1); border-color: var(--cyan); }
.agent-debt-badge.debt-zero .debt-value { color: var(--cyan); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }
  .sidebar-close { display: block; }
  .main-wrapper { margin-right: 0; }
  .menu-btn { display: block; }
  .main-content { padding: 1rem; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar input, .filter-bar select { max-width: 100%; }
  .topbar-right .topbar-date { display: none; }
  .agent-profile-header { flex-direction: column; text-align: center; }
  .agent-debt-badge { margin-right: 0; width: 100%; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .tabs { flex-direction: column; }
}