/* ==========================================================================
   AKONE BUSINESS OPERATING SYSTEM - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-surface: rgba(30, 41, 59, 0.6);
  --bg-surface-active: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.15);
  --danger: #f43f5e;
  --danger-glow: rgba(244, 63, 94, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
}

#app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  width: 260px;
  background: rgba(13, 18, 30, 0.85);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  position: fixed;
  height: 100vh;
  z-index: 10;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #6366f1, #10b981);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 0 16px var(--accent-glow);
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.brand-name {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.5px;
  color: #fff;
}

.brand-tag {
  font-size: 10px;
  color: var(--text-dim);
  display: block;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  overflow-y: auto;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 16px 8px 6px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background: var(--bg-surface);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-primary);
  border: 1px solid var(--border-glow);
  font-weight: 600;
}

.nav-icon {
  font-size: 16px;
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-surface-active);
  border: 1px solid var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: var(--accent-primary);
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  display: block;
}

.user-role {
  font-size: 10px;
  color: var(--text-dim);
  display: block;
}

/* Main Layout */
.main-wrapper {
  margin-left: 260px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  height: 64px;
  background: rgba(13, 18, 30, 0.6);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 5;
}

.search-container {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  width: 360px;
  transition: all 0.2s ease;
}

.search-container:focus-within {
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-glow);
}

.search-input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
  outline: none;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-container {
  padding: 28px;
  flex: 1;
}

/* Page Headers & Cards */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-family: 'Outfit', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

.page-subtitle {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.2s ease;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Grid & Metrics */
.grid-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
}

.metric-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.metric-value {
  font-family: 'Outfit', sans-serif;
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
}

.metric-footer {
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.grid-2col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

/* Data Tables */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  padding: 12px 14px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-main);
}

/* Status Pills */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.status-customer { background: var(--success-glow); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-active { background: var(--success-glow); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-qualified { background: var(--accent-glow); color: var(--accent-primary); border: 1px solid var(--border-glow); }
.status-planning { background: var(--accent-glow); color: var(--accent-primary); border: 1px solid var(--border-glow); }
.status-paid { background: var(--success-glow); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-sent { background: var(--warning-glow); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.status-draft { background: var(--bg-surface-active); color: var(--text-dim); }
.status-warning { background: var(--warning-glow); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.status-danger { background: var(--danger-glow); color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.3); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-primary:hover {
  opacity: 0.95;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-surface-active);
  border-color: rgba(255, 255, 255, 0.16);
}

.btn-sm { padding: 5px 10px; font-size: 11px; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.16);
}

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  background: rgba(17, 24, 39, 0.3);
}

.empty-state-icon {
  font-size: 36px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.empty-state-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.empty-state-desc {
  font-size: 12px;
  color: var(--text-dim);
  max-width: 320px;
  margin-bottom: 16px;
}

/* Slide-Over Drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 20;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.active { opacity: 1; pointer-events: auto; }

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 520px;
  height: 100vh;
  background: #0f172a;
  border-left: 1px solid var(--border-color);
  z-index: 21;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.drawer.active { transform: translateX(0); }

.drawer-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-title {
  font-size: 16px;
  font-weight: 700;
}

.drawer-body {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Modal Styling */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
  width: 480px;
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
}

.form-input, .form-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
}

.form-input:focus, .form-select:focus {
  border-color: var(--accent-primary);
}

.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-sm { display: flex; align-items: center; gap: 8px; }

/* GitHub-Style Vertical Timeline CSS */
.gh-timeline {
  position: relative;
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 12px;
}

.gh-timeline::before {
  content: '';
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 10px;
  width: 2px;
  background: var(--border-color);
}

.gh-timeline-item {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.gh-timeline-item:hover {
  transform: translateX(3px);
  border-color: var(--accent-primary);
}

.gh-timeline-node {
  position: absolute;
  left: -24px;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 2px solid var(--bg-deep);
  box-shadow: 0 0 6px rgba(139, 92, 246, 0.4);
}

.gh-timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.gh-timeline-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.gh-timeline-time {
  font-size: 11px;
  color: var(--text-dim);
  font-family: monospace;
}

.gh-timeline-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.gh-timeline-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  font-size: 10px;
  font-family: monospace;
  color: var(--accent-primary);
}