/* HookOS — Design System & Material Design 3-inspired Stylesheet */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Light Theme Tokens */
  --bg-base: #F7F7F8;
  --bg-surface: #FFFFFF;
  --bg-elevated: #F2F3F5;
  --text-primary: #191A1C;
  --text-secondary: #686A70;
  --text-muted: #93969E;
  --border-subtle: #E5E6E8;
  --border-focus: #F95721;
  
  /* Brand Accent: Signature The Hook Theory Co. Orange */
  --accent-primary: #F95721;
  --accent-hover: #E04310;
  --accent-surface: #FFF1EB;

  --color-success: #059669;
  --color-success-bg: #ECFDF5;
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-danger: #DC2626;
  --color-danger-bg: #FEF2F2;
  --color-info: #4F46E5;
  --color-info-bg: #EEF2FF;
}

html.dark {
  /* Dark Theme Tokens */
  --bg-base: #0E0F12;
  --bg-surface: #17181D;
  --bg-elevated: #202229;
  --text-primary: #F4F4F5;
  --text-secondary: #A4A6AD;
  --text-muted: #686A73;
  --border-subtle: #2C2E36;
  --border-focus: #FF6838;

  /* Brand Accent: Glowing Hook Theory Orange */
  --accent-primary: #FF6838;
  --accent-hover: #F95721;
  --accent-surface: rgba(249, 87, 33, 0.16);

  --color-success: #10B981;
  --color-success-bg: #064E3B;
  --color-warning: #F59E0B;
  --color-warning-bg: #78350F;
  --color-danger: #EF4444;
  --color-danger-bg: #7F1D1D;
  --color-info: #6366F1;
  --color-info-bg: #312E81;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Visibility Utilities */
.hidden,
.dropdown-menu.hidden {
  display: none !important;
}

/* Surfaces & Containers */
.bg-base { background-color: var(--bg-base); }
.bg-surface { background-color: var(--bg-surface); }
.bg-elevated { background-color: var(--bg-elevated); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.border-subtle { border-color: var(--border-subtle); }

/* Common Layout Utilities */
.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Fixed Sidebar that NEVER scrolls with the page content */
.sidebar {
  width: 260px;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  z-index: 40;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}

/* Desktop Sidebar Collapsed State */
.sidebar.collapsed {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh;
  margin-left: 260px;
  transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.collapsed ~ .main-content {
  margin-left: 0;
}

.top-bar {
  height: 64px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 30;
}

.page-body {
  flex: 1;
  padding: 1.5rem;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

/* Logo Image */
.brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  border-radius: 6px;
  display: block;
}

/* Nav links */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
}

.nav-link.active {
  background-color: var(--accent-surface);
  color: var(--accent-primary);
  font-weight: 600;
}

/* Cards */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.25;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
}
.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--bg-surface);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background-color: var(--bg-elevated);
}

.btn-danger {
  background-color: var(--color-danger);
  color: #FFFFFF;
}
.btn-danger:hover {
  opacity: 0.9;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.badge-brand {
  background-color: var(--accent-surface);
  color: var(--accent-primary);
}

.badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-danger {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.badge-neutral {
  background-color: var(--bg-elevated);
  color: var(--text-secondary);
}

.badge-info {
  background-color: var(--color-info-bg);
  color: var(--color-info);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  background-color: var(--bg-surface);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

table.data-table th {
  background-color: var(--bg-elevated);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

table.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

table.data-table tr:last-child td {
  border-bottom: none;
}

table.data-table tr:hover td {
  background-color: var(--bg-elevated);
}

/* Inputs & Form Fields */
input[type="text"], input[type="email"], input[type="password"],
input[type="date"], input[type="number"], input[type="url"],
select, textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(249, 87, 33, 0.2);
}

/* Dropdown Menus */
.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
  z-index: 50;
  overflow: hidden;
}

.dropdown-menu.active,
.dropdown-menu.show {
  display: block !important;
}

/* Notification Badge */
.notif-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--accent-primary);
  color: #FFFFFF;
  font-size: 0.6875rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* Alerts & Flash Messages */
.alert {
  padding: 0.875rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.alert-success { background-color: var(--color-success-bg); color: var(--color-success); border: 1px solid var(--color-success); }
.alert-warning { background-color: var(--color-warning-bg); color: var(--color-warning); border: 1px solid var(--color-warning); }
.alert-error { background-color: var(--color-danger-bg); color: var(--color-danger); border: 1px solid var(--color-danger); }
.alert-info { background-color: var(--color-info-bg); color: var(--color-info); border: 1px solid var(--color-info); }

/* Enhanced Task Cards for Admin Dashboard */
.task-card-enhanced {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  background: var(--bg-surface);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.task-card-enhanced:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 4px 12px -2px rgba(249, 87, 33, 0.12);
  transform: translateY(-1px);
}

.task-card-enhanced::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--border-subtle);
}

.task-card-enhanced.urgent::before { background: var(--color-danger); }
.task-card-enhanced.high::before { background: var(--color-warning); }
.task-card-enhanced.medium::before { background: var(--accent-primary); }
.task-card-enhanced.low::before { background: var(--text-muted); }

/* Pulse dot for urgent tasks */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.dot-urgent {
  animation: pulse 1.8s infinite ease-in-out;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 50;
    transform: translateX(-100%);
    margin-left: 0 !important;
    opacity: 1 !important;
    pointer-events: auto !important;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0 !important;
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 45;
  }
  .sidebar-backdrop.active {
    display: block;
  }
}