/* Reset & Base Styles ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  color: var(--ink);
  background: linear-gradient(135deg, var(--paper) 0%, var(--paper-warm) 50%, var(--surface) 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* Google Fonts - Plus Jakarta Sans */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

h1, h2, h3, h4, p, figure { margin: 0; }
button { font-family: inherit; cursor: pointer; }
a { color: var(--verdant-dark); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--verdant); }
ul { list-style: none; margin: 0; padding: 0; }

/* Accessible focus states */
:focus-visible {
  outline: 2px solid var(--verdant);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { 
    animation-duration: 0.001ms !important; 
    animation-iteration-count: 1 !important; 
    transition-duration: 0.001ms !important; 
  }
}

/* Typography ------------------------------------------------------------- */
.h-display { 
  font-size: var(--text-3xl); 
  font-weight: 800; 
  letter-spacing: -0.03em; 
  line-height: 1.1;
  background: var(--gradient-verdant);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.h-page { 
  font-size: var(--text-xl); 
  font-weight: 700; 
  letter-spacing: -0.02em; 
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: var(--space-6);
}
.h-section { 
  font-size: var(--text-md); 
  font-weight: 600; 
  letter-spacing: -0.01em; 
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.text-soft { color: var(--ink-soft); }
.text-faint { color: var(--ink-faint); }
.mono { 
  font-family: var(--font-mono); 
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* App Shell -------------------------------------------------------------- */
#app-shell {
  display: none;
  min-height: 100vh;
  opacity: 0;
  transition: opacity var(--transition-slow);
}
#app-shell.is-visible { 
  display: grid; 
  grid-template-columns: var(--sidebar-width) 1fr; 
  opacity: 1;
}

/* Sidebar Toggle Button (Hamburger Menu) --------------------------------- */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 60;
  width: 44px;
  height: 44px;
  border: none;
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  transition: all var(--transition-base);
}

.sidebar-toggle:hover {
  background: var(--paper);
  box-shadow: var(--shadow-lg);
}

.sidebar-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.sidebar-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sidebar-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.sidebar-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 860px) {
  .sidebar-toggle {
    display: flex;
  }
}

/* Sidebar ---------------------------------------------------------------- */
.sidebar {
  background: linear-gradient(180deg, #0f1419 0%, #1a1f24 100%);
  color: #fff;
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width);
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
    z-index: 50;
  }

  .sidebar.is-open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.2);
}

.brand-logo, .brand-logo-sidebar {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-2);
  margin-bottom: var(--space-4);
}

.brand-logo img {
  max-width: 180px;
  height: auto;
  object-fit: contain;
}

.brand-logo-sidebar img {
  max-width: 180px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-2);
}
.brand-mark .dot { 
  width: 10px; 
  height: 10px; 
  border-radius: 50%; 
  background: var(--verdant); 
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--verdant);
}
.brand-mark span { 
  font-weight: 700; 
  letter-spacing: -0.01em; 
  font-size: var(--text-md); 
}

.nav-group { 
  display: flex; 
  flex-direction: column; 
  gap: var(--space-1); 
}
.nav-group + .nav-group { 
  border-top: 1px solid rgba(255,255,255,0.1); 
  padding-top: var(--space-4); 
  margin-top: var(--space-2); 
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.nav-link i {
  width: 20px;
  text-align: center;
  font-size: var(--text-lg);
  opacity: 0.7;
  transition: all var(--transition-base);
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}
.nav-link:hover { 
  background: rgba(255,255,255,0.1); 
  color: #fff;
  transform: translateX(4px);
}
.nav-link:hover i {
  opacity: 1;
  transform: scale(1.1);
  filter: drop-shadow(0 2px 4px rgba(0, 190, 100, 0.4));
}
.nav-link.is-active { 
  background: var(--gradient-verdant); 
  color: #fff; 
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 190, 100, 0.3), inset 0 1px 0 rgba(255,255,255,0.2);
}
.nav-link.is-active i {
  opacity: 1;
  filter: drop-shadow(0 2px 6px rgba(255,255,255,0.4));
}

/* Main Column ------------------------------------------------------------ */
.main-column { 
  display: flex; 
  flex-direction: column; 
  min-width: 0;
  background: transparent;
  padding-left: var(--space-6);
  padding-right: var(--space-4);
  transition: margin-left var(--transition-base);
}

@media (max-width: 860px) {
  .main-column {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
    margin-left: 0;
  }
}

/* When sidebar is open on mobile, add overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 45;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.is-visible {
  display: block;
  opacity: 1;
}

/* Topbar ----------------------------------------------------------------- */
.topbar {
  height: var(--topbar-height);
  border-bottom: 1px solid var(--line);
  background: var(--surface-glass);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.topbar-search { 
  flex: 1; 
  max-width: 420px; 
  min-width: 0;
  position: relative;
}
.topbar-search input { 
  width: 100%; 
  height: 40px;
  padding: 0 var(--space-4) 0 40px;
  font-size: var(--text-base);
}
.topbar-search i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
  font-size: var(--text-base);
  pointer-events: none;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  flex-shrink: 0;
}
#topbar-user-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.avatar {
  width: 36px; 
  height: 36px; 
  border-radius: 50%;
  background: var(--gradient-verdant); 
  color: #fff;
  display: flex; 
  align-items: center; 
  justify-content: center;
  font-weight: 700; 
  font-size: var(--text-sm);
  box-shadow: 0 2px 8px rgba(0, 190, 100, 0.3);
}

/* View Container --------------------------------------------------------- */
.view { 
  padding: var(--space-6) var(--space-7); 
  max-width: 1400px; 
  width: 100%; 
  animation: fadeIn var(--transition-slow) ease-out;
}
.view[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line-faint);
}
.view-header .h-page {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.view-header .h-page i {
  flex-shrink: 0;
}

/* Mobile Responsive ------------------------------------------------------ */
@media (max-width: 860px) {
  #app-shell.is-visible { grid-template-columns: 1fr; }
  
  /* Adjust topbar padding on mobile to account for toggle button */
  .topbar {
    padding-left: var(--space-14);
  }

  /* Better spacing for views on mobile */
  .view {
    padding: var(--space-4) var(--space-4);
  }

  /* Stack view header on mobile */
  .view-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  /* Make tables scrollable horizontally on mobile */
  .table-wrap {
    overflow-x: auto;
  }

  table {
    min-width: 600px;
  }

  /* Adjust metric grid for smaller screens */
  .metric-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Better form layout on mobile */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Drawer width adjustment for mobile */
  .drawer {
    width: min(100vw, 420px);
  }

  .drawer-wide {
    width: min(100vw, 600px);
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    padding: 0 var(--space-3);
    padding-left: calc(var(--space-14) + var(--space-3));
  }

  .topbar-search {
    max-width: 100%;
  }

  #topbar-user-name {
    display: none;
  }

  .view {
    padding: var(--space-3) var(--space-3);
  }

  /* Smaller hamburger button spacing on very small screens */
  .sidebar-toggle {
    width: 40px;
    height: 40px;
    top: var(--space-3);
    left: var(--space-3);
  }
}