/* ==========================================================================
   PC Key Digital Solutions - Modern Dashboard & GST Invoicing Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary: #475569;
  --accent: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --dark-bg: #0f172a;
  --dark-surface: #1e293b;
  --dark-border: #334155;
  --light-bg: #f8fafc;
  --light-surface: #ffffff;
  --light-border: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--light-bg);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* ── App Layout ── */
.app-container {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: 260px;
  background-color: var(--dark-bg);
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid var(--dark-border);
  transition: width 0.3s ease;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
}

.sidebar-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: #fff;
}

.brand-subtitle {
  font-size: 11px;
  color: #94a3b8;
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #64748b;
  padding: 12px 10px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: #94a3b8;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-item.active {
  background: linear-gradient(90deg, #2563eb, #1d4ed8);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.nav-item .icon {
  font-size: 18px;
  width: 20px;
  text-align: center;
}

.nav-badge {
  margin-left: auto;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #3b82f6;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 12px;
}

/* ── Main Content Area ── */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.top-navbar {
  height: 64px;
  background-color: var(--light-surface);
  border-bottom: 1px solid var(--light-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.navbar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.main-body {
  padding: 28px 32px;
  flex: 1;
}

/* ── KPI Summary Cards ── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--light-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--light-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.kpi-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.kpi-icon.blue { background: #dbeafe; color: #1d4ed8; }
.kpi-icon.green { background: #d1fae5; color: #047857; }
.kpi-icon.amber { background: #fef3c7; color: #b45309; }
.kpi-icon.purple { background: #f3e8ff; color: #7e22ce; }
.kpi-icon.sky { background: #e0f2fe; color: #0369a1; }

.kpi-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Glass & Flat Cards ── */
.card {
  background: var(--light-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--light-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--light-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #fafbfc;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed !important;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}
.btn-success:hover:not(:disabled) {
  background-color: #059669;
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--light-border);
  color: var(--text-main);
}
.btn-secondary:hover:not(:disabled) {
  background-color: #f1f5f9;
}

.btn-dark {
  background-color: var(--dark-surface);
  color: #fff;
}
.btn-dark:hover:not(:disabled) {
  background-color: var(--dark-bg);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 4px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

/* ── Form Controls ── */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
}

.form-control, .form-select {
  width: 100%;
  padding: 9px 12px;
  font-size: 13.5px;
  font-family: inherit;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* ── Data Tables ── */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}

.data-table th {
  background-color: #f8fafc;
  color: #475569;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--light-border);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
  color: #334155;
}

.data-table tr:hover td {
  background-color: #f8fafc;
}

.data-table .td-right, .data-table th.th-right {
  text-align: right;
}

/* ── Status & State Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.badge-paid, .badge-completed {
  background-color: #dcfce7;
  color: #15803d;
}

.badge-unpaid, .badge-pending {
  background-color: #fef3c7;
  color: #b45309;
}

.badge-processing {
  background-color: #e0f2fe;
  color: #0369a1;
}

.badge-cancelled {
  background-color: #f1f5f9;
  color: #64748b;
}

.badge-odisha {
  background-color: #f3e8ff;
  color: #7e22ce;
  border: 1px solid #e9d5ff;
}

.badge-interstate {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

/* ── Month Selector Bar ── */
.month-selector-bar {
  background: var(--light-surface);
  border: 1px solid var(--light-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.month-nav-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.quick-month-btn {
  padding: 6px 14px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 600;
  color: #475569;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: 1px solid transparent;
}

.quick-month-btn:hover {
  background: #e2e8f0;
}

.quick-month-btn.active {
  background: var(--primary);
  color: #fff;
}

/* ── Modal Dialog ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--light-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--light-border);
  background: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ── Toast Notifications ── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  background: var(--dark-bg);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--accent); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── Mobile Hamburger & Drawer Controls ── */
.btn-hamburger {
  display: none;
  background: transparent;
  border: 1px solid var(--light-border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 18px;
  line-height: 1;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-hamburger:hover {
  background-color: #f1f5f9;
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(3px);
  z-index: 45;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-backdrop.active {
  opacity: 1;
  visibility: visible;
}

/* ── Comprehensive Responsive Breakpoints ── */

/* Tablets & Small Desktops (<= 1024px) */
@media (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .month-selector-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }
}

/* Tablets (<= 900px) */
@media (max-width: 900px) {
  .btn-hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 270px;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 50;
    box-shadow: var(--shadow-lg);
  }

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

  .top-navbar {
    padding: 0 16px;
  }

  .main-body {
    padding: 20px 16px;
  }

  .btn-nav-action span {
    display: none;
  }
  .btn-nav-action::before {
    content: "📦";
  }
  .btn-nav-action:nth-child(2)::before {
    content: "🔄";
  }

  .user-nav-name {
    display: none;
  }
}

/* Mobile Phones (<= 640px) */
@media (max-width: 640px) {
  .kpi-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .navbar-title span {
    font-size: 15px;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
  }

  .card-body {
    padding: 16px;
  }

  .form-row {
    grid-template-columns: 1fr !important;
    gap: 12px;
  }

  .modal-content {
    margin: 10px;
    max-width: 100%;
    border-radius: var(--radius-md);
  }

  .modal-header, .modal-body, .modal-footer {
    padding: 16px;
  }

  .month-selector-bar {
    padding: 12px 14px;
  }

  .month-nav-group {
    flex-wrap: wrap;
    width: 100%;
    justify-content: space-between;
  }

  .quick-month-btn {
    padding: 4px 8px;
    font-size: 11.5px;
  }

  .data-table th, .data-table td {
    padding: 10px 12px;
    font-size: 12px;
  }

  .btn {
    padding: 8px 14px;
    font-size: 12.5px;
  }
}