@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Geist:wght@400;500;600;700&family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* Base System & Viewport Lockdown Defaults */
:root {
  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Geist', monospace;
  --sidebar-width-expanded: 250px;
  --sidebar-width-collapsed: 70px;
  --header-height: 56px;
}

html, body {
  height: 100%;
  max-height: 100vh;
  overflow: hidden;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background-color: #f8f9ff;
  color: #0b1c30;
}

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
  user-select: none;
}

.material-symbols-outlined.filled {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* Custom Scrollbars */
.custom-scrollbar::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Glassmorphism Headers */
.glass-header {
  background: rgba(248, 249, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Micro-depth & Elevation */
.elevation-low {
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.modal-shadow {
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.08);
}

/* Active List Indicator */
.active-indicator {
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background-color: #0051d5;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
}

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================================= */
/* COLLAPSIBLE SIDEBAR & RESPONSIVE WORKSPACE LAYOUT */
/* ========================================================= */
.sidebar-expanded {
  width: var(--sidebar-width-expanded) !important;
}

.sidebar-collapsed {
  width: var(--sidebar-width-collapsed) !important;
}

.sidebar-collapsed .brand-text,
.sidebar-collapsed .nav-label,
.sidebar-collapsed .btn-label {
  display: none !important;
}

.sidebar-collapsed .brand-container {
  padding-left: 12px !important;
  padding-right: 12px !important;
  justify-content: center !important;
}

.sidebar-collapsed .nav-link {
  justify-content: center !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.sidebar-collapsed .action-btn {
  justify-content: center !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.main-content-expanded {
  padding-left: var(--sidebar-width-expanded) !important;
}

.main-content-collapsed {
  padding-left: var(--sidebar-width-collapsed) !important;
}

/* Transitions */
.smooth-transition {
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes progress-loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.animate-progress {
  animation: progress-loading 1.8s infinite ease-in-out;
}

/* Message Text Formatting */
.msg-text strong {
  font-weight: 700;
}
.msg-text em {
  font-style: italic;
}
.msg-text del {
  text-decoration: line-through;
}
.msg-text code {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.06);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* Active Contact Item States */
.chat-contact-card {
  transition: background-color 0.15s ease;
}
.chat-contact-card:hover {
  background-color: #eff4ff;
}
.chat-contact-card.active {
  background-color: #e5eeff;
}