/* ==========================================================================
   MSS SELLER HUB — OFFICIAL RESPONSIVE STYLESHEET
   Brand: MSS World Wide Collection
   ========================================================================== */

:root {
  --primary: #0A224D;
  --primary-light: #1565C0;
  --primary-accent: #0066FF;
  --primary-dark: #05142E;
  --accent-gold: #FFB300;
  --accent-gold-dark: #D97706;
  --accent-gold-light: #FEF3C7;
  
  --surface: #FFFFFF;
  --surface-alt: #F8FAFC;
  --surface-card: #FFFFFF;
  --border: #E2E8F0;
  --border-focus: #0066FF;
  
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  --success: #10B981;
  --success-bg: #ECFDF5;
  --success-border: #A7F3D0;
  
  --warning: #F59E0B;
  --warning-bg: #FFFBEB;
  --warning-border: #FDE68A;
  
  --danger: #EF4444;
  --danger-bg: #FEF2F2;
  --danger-border: #FECACA;
  
  --info: #0284C7;
  --info-bg: #F0F9FF;
  --info-border: #BAE6FD;
  
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 72px;
  --header-height: 68px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 14px -1px rgba(10, 34, 77, 0.08);
  --shadow-lg: 0 12px 30px -4px rgba(10, 34, 77, 0.12);
  --shadow-modal: 0 20px 45px -5px rgba(10, 34, 77, 0.25);
  
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--surface-alt);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ==========================================================================
   LAYOUT STRUCTURE (Sidebar + Main + TopBar)
   ========================================================================== */

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

/* --- SIDEBAR --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease, width 0.3s ease;
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.sidebar-logo {
  height: 38px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
}

.sidebar-brand-name {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.sidebar-brand-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-menu {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.menu-category-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  padding: 0.8rem 0.75rem 0.35rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  background: var(--surface-alt);
  color: var(--primary-accent);
}

.nav-link.active {
  background: #EFF6FF;
  color: var(--primary-accent);
  font-weight: 700;
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 3.5px;
  background: var(--primary-accent);
  border-radius: 0 4px 4px 0;
}

.nav-link-icon {
  font-size: 1.15rem;
  width: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-link-badge {
  margin-left: auto;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--primary-accent);
  color: #fff;
}

.nav-link-badge.warning {
  background: var(--warning);
  color: #000;
}

.sidebar-footer {
  padding: 1rem 0.85rem;
  border-top: 1px solid var(--border);
  background: var(--surface-alt);
}

.seller-profile-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.seller-profile-card:hover {
  background: #E2E8F0;
}

.seller-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.seller-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.seller-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seller-status-pill {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.seller-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

/* --- MAIN WRAPPER --- */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left 0.3s ease;
  width: calc(100% - var(--sidebar-width));
}

/* --- TOP HEADER --- */
.top-header {
  height: var(--header-height);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  padding: 0.45rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  cursor: pointer;
  font-size: 1.25rem;
}

.page-breadcrumb {
  display: flex;
  flex-direction: column;
}

.breadcrumb-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.breadcrumb-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.compliance-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.75rem;
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-full);
}

.header-icon-btn {
  position: relative;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}

.header-icon-btn:hover {
  color: var(--primary);
  background: #E2E8F0;
}

.header-badge-count {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--danger);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--surface);
}

.btn-header-cta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary-accent);
  color: #fff;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-header-cta:hover {
  background: var(--primary-light);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.25);
}

/* --- CONTENT CONTAINER --- */
.content-area {
  flex: 1;
  padding: 1.5rem;
  max-width: 1380px;
  width: 100%;
  margin: 0 auto;
}

/* --- BOTTOM MOBILE BAR --- */
.bottom-nav-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 100;
  justify-content: space-around;
  align-items: center;
  padding: 0 0.5rem;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.bottom-nav-item.active {
  color: var(--primary-accent);
  font-weight: 700;
}

.bottom-nav-icon {
  font-size: 1.25rem;
  line-height: 1;
  margin-bottom: 2px;
}

/* ==========================================================================
   PAGE VIEWS & ROUTING
   ========================================================================== */

.view-page {
  display: none;
  animation: fadeIn 0.2s ease-in-out;
}

.view-page.active {
  display: block;
}

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

/* ==========================================================================
   CARDS & KPI STATS
   ========================================================================== */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #CBD5E1;
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: #F1F5F9;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.stat-icon.primary { background: #EFF6FF; color: var(--primary-accent); }
.stat-icon.success { background: var(--success-bg); color: var(--success); }
.stat-icon.warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.info { background: var(--info-bg); color: var(--info); }
.stat-icon.danger { background: var(--danger-bg); color: var(--danger); }

.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.stat-footer {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.stat-trend-up {
  color: var(--success);
  font-weight: 700;
}

.stat-trend-alert {
  color: var(--warning);
  font-weight: 700;
}

/* ==========================================================================
   PANELS & CONTAINERS
   ========================================================================== */

.panel-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.panel-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.panel-title-group {
  display: flex;
  flex-direction: column;
}

.panel-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

.panel-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.panel-body {
  padding: 1.5rem;
}

/* ==========================================================================
   BUTTONS & FORM CONTROLS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-light);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.25);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-main);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--surface-alt);
  border-color: #CBD5E1;
}

.btn-gold {
  background: var(--accent-gold);
  color: #000;
}
.btn-gold:hover {
  background: var(--accent-gold-dark);
  color: #fff;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger-border);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover {
  background: #059669;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn-icon-only {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* Form inputs */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
}

.form-label .required {
  color: var(--danger);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 0.9rem;
  color: var(--text-main);
  transition: var(--transition);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.12);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

/* ==========================================================================
   DATA TABLES
   ========================================================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background: var(--surface-alt);
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

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

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

.data-table tr:hover td {
  background: #F8FAFC;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-info { background: var(--info-bg); color: var(--info); border: 1px solid var(--info-border); }
.badge-neutral { background: #F1F5F9; color: var(--text-muted); border: 1px solid var(--border); }

/* Table filters toolbar */
.table-toolbar {
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.search-box {
  position: relative;
  min-width: 260px;
}

.search-box input {
  padding-left: 2.25rem;
}

.search-box-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 0.9rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-pill {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.filter-pill.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ==========================================================================
   MODAL DIALOGS
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.active {
  display: flex;
}

.modal-dialog {
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalPop 0.25s ease forwards;
}

.modal-dialog.lg {
  max-width: 850px;
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--danger);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--surface-alt);
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */

#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary-accent);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 280px;
  animation: toastIn 0.3s ease forwards;
}

.toast.success { border-left-color: var(--success); }
.toast.warning { border-left-color: var(--warning); }
.toast.danger { border-left-color: var(--danger); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   AUTH SCREEN (LOGIN / GST / OTP)
   ========================================================================== */

.auth-wrapper {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0A224D 0%, #0F2D69 50%, #071736 100%);
  padding: 1.5rem;
}

.auth-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
}

.auth-header {
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  padding: 2rem 2rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.auth-logo {
  height: 52px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  margin-bottom: 1rem;
}

.auth-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-body {
  padding: 2rem;
}

.auth-tabs {
  display: flex;
  background: #F1F5F9;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
}

.auth-tab-btn {
  flex: 1;
  padding: 0.6rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.auth-tab-btn.active {
  background: var(--surface);
  color: var(--primary-accent);
  box-shadow: var(--shadow-sm);
}

.otp-inputs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.25rem 0;
}

.otp-box {
  width: 48px;
  height: 52px;
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
}

.otp-box:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.12);
}

/* ==========================================================================
   CATALOGUE IMPORT (DRAG & DROP, PREVIEW)
   ========================================================================== */

.dropzone {
  border: 2px dashed #CBD5E1;
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  text-align: center;
  background: #F8FAFC;
  cursor: pointer;
  transition: var(--transition);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary-accent);
  background: #EFF6FF;
}

.dropzone-icon {
  font-size: 2.8rem;
  color: var(--primary-accent);
  margin-bottom: 0.75rem;
}

.dropzone-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.dropzone-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.import-preview-box {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.import-summary-bar {
  padding: 0.75rem 1rem;
  background: #F1F5F9;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ==========================================================================
   CHARTS & VISUALS
   ========================================================================== */

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.chart-container {
  width: 100%;
  height: 280px;
  position: relative;
}

.charts-grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

/* ==========================================================================
   DOWNLOADS & BUILDS CENTER
   ========================================================================== */

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.download-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.download-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-accent);
}

.download-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: #EFF6FF;
  color: var(--primary-accent);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.download-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.download-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.download-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex: 1;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Desktop, Laptop, Tablet, Mobile)
   ========================================================================== */

@media (max-width: 1024px) {
  .charts-grid-2 {
    grid-template-columns: 1fr;
  }
  .form-grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-modal);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 99;
    display: none;
  }

  .sidebar-backdrop.active {
    display: block;
  }

  .main-wrapper {
    margin-left: 0;
    width: 100%;
    padding-bottom: 60px; /* Space for bottom nav */
  }

  .mobile-menu-btn {
    display: flex;
  }

  .bottom-nav-bar {
    display: flex;
  }

  .content-area {
    padding: 1rem;
  }

  .form-grid-2, .form-grid-3 {
    grid-template-columns: 1fr;
  }

  .table-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    width: 100%;
  }

  .filter-group {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.25rem;
  }

  .auth-card {
    border-radius: var(--radius-md);
  }
}