/* ==========================================================================
   PayTrail Design System
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens
   -------------------------------------------------------------------------- */

:root {
  /* Colors - Primary */
  --color-primary-50: #f0fdf4;
  --color-primary-100: #dcfce7;
  --color-primary-200: #bbf7d0;
  --color-primary-300: #86efac;
  --color-primary-400: #4ade80;
  --color-primary-500: #22c55e;
  --color-primary-600: #16a34a;
  --color-primary-700: #15803d;
  --color-primary-800: #166534;
  --color-primary-900: #14532d;

  /* Colors - Neutral */
  --color-neutral-0: #ffffff;
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;

  /* Colors - Status */
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  /* Spacing Scale (4px base) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-full: 9999px;

  /* Shadows */
  --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);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-neutral-800);
  background-color: var(--color-neutral-50);
  min-height: 100vh;
}

/* Focus States - Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */

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

.sidebar {
  width: 240px;
  background: var(--color-neutral-900);
  color: var(--color-neutral-0);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.main-content {
  flex: 1;
  margin-left: 240px;
  padding: var(--space-8);
  max-width: 1400px;
}

/* --------------------------------------------------------------------------
   Sidebar Components
   -------------------------------------------------------------------------- */

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-primary-600));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

.logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: -0.025em;
}

.nav-section {
  margin-bottom: var(--space-6);
}

.nav-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-neutral-500);
  margin-bottom: var(--space-3);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-neutral-300);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-item:hover {
  background: var(--color-neutral-800);
  color: var(--color-neutral-0);
}

.nav-item.active {
  background: var(--color-primary-600);
  color: var(--color-neutral-0);
}

.nav-item svg {
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-neutral-700);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
}

.user-details {
  flex: 1;
}

.user-name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

.user-plan {
  font-size: var(--text-xs);
  color: var(--color-primary-400);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
  letter-spacing: -0.025em;
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  margin-top: var(--space-1);
}

.header-actions {
  display: flex;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary-600);
  color: var(--color-neutral-0);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-700);
}

.btn-secondary {
  background: var(--color-neutral-0);
  color: var(--color-neutral-700);
  border: 1px solid var(--color-neutral-200);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-neutral-50);
  border-color: var(--color-neutral-300);
}

.btn-ghost {
  background: transparent;
  color: var(--color-neutral-600);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-neutral-100);
}

.btn-danger {
  background: var(--color-danger);
  color: var(--color-neutral-0);
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}

.btn-icon {
  padding: var(--space-2);
}

/* --------------------------------------------------------------------------
   Stats Cards
   -------------------------------------------------------------------------- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
  transition: all var(--transition-normal);
}

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

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.stat-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-500);
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon.green {
  background: var(--color-primary-100);
  color: var(--color-primary-600);
}

.stat-icon.yellow {
  background: #fef3c7;
  color: var(--color-warning);
}

.stat-icon.red {
  background: #fee2e2;
  color: var(--color-danger);
}

.stat-icon.blue {
  background: #dbeafe;
  color: var(--color-info);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-1);
}

.stat-change {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

.stat-change.positive {
  color: var(--color-success);
}

.stat-change.negative {
  color: var(--color-danger);
}

/* --------------------------------------------------------------------------
   Pipeline / Kanban
   -------------------------------------------------------------------------- */

.pipeline-section {
  margin-bottom: var(--space-8);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-900);
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.pipeline-column {
  background: var(--color-neutral-100);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  min-height: 400px;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3);
  margin-bottom: var(--space-4);
}

.column-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-700);
}

.column-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
}

.column-dot.sent { background: var(--color-info); }
.column-dot.due { background: var(--color-warning); }
.column-dot.overdue { background: var(--color-danger); }
.column-dot.paid { background: var(--color-success); }

.column-count {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-neutral-500);
  background: var(--color-neutral-200);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
}

.invoice-card {
  background: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.invoice-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.invoice-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.invoice-client {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-900);
}

.invoice-id {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
  margin-top: var(--space-1);
}

.invoice-amount {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
}

.invoice-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-neutral-100);
}

.invoice-date {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

.health-badge {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
}

.health-badge.excellent {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

.health-badge.good {
  background: #dbeafe;
  color: #1d4ed8;
}

.health-badge.warning {
  background: #fef3c7;
  color: #b45309;
}

.health-badge.risk {
  background: #fee2e2;
  color: #b91c1c;
}

/* --------------------------------------------------------------------------
   Client Table
   -------------------------------------------------------------------------- */

.clients-section {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  overflow: hidden;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.table-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.search-input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-neutral-50);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.search-input input {
  border: none;
  background: none;
  outline: none;
  color: var(--color-neutral-800);
  width: 180px;
}

.search-input input::placeholder {
  color: var(--color-neutral-400);
}

.client-table {
  width: 100%;
  border-collapse: collapse;
}

.client-table th {
  text-align: left;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-neutral-500);
  background: var(--color-neutral-50);
  border-bottom: 1px solid var(--color-neutral-200);
}

.client-table td {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  border-bottom: 1px solid var(--color-neutral-100);
}

.client-table tr:hover td {
  background: var(--color-neutral-50);
}

.client-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.client-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--color-neutral-0);
}

.client-name {
  font-weight: var(--font-medium);
  color: var(--color-neutral-900);
}

.client-email {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

.health-score {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.score-bar {
  width: 60px;
  height: 6px;
  background: var(--color-neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.score-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.score-fill.excellent { background: var(--color-success); }
.score-fill.good { background: var(--color-info); }
.score-fill.warning { background: var(--color-warning); }
.score-fill.risk { background: var(--color-danger); }

.score-value {
  font-weight: var(--font-semibold);
  min-width: 28px;
}

.days-badge {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.days-badge.fast {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

.days-badge.normal {
  background: #dbeafe;
  color: #1d4ed8;
}

.days-badge.slow {
  background: #fef3c7;
  color: #b45309;
}

.days-badge.very-slow {
  background: #fee2e2;
  color: #b91c1c;
}

.action-buttons {
  display: flex;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   Cash Flow Chart
   -------------------------------------------------------------------------- */

.cashflow-section {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  padding: var(--space-6);
  margin-top: var(--space-8);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.chart-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.chart-legend {
  display: flex;
  gap: var(--space-5);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.legend-dot.optimistic { background: var(--color-primary-500); }
.legend-dot.realistic { background: var(--color-info); }
.legend-dot.baseline { background: var(--color-neutral-300); border: 2px dashed var(--color-neutral-400); }

.chart-container {
  height: 240px;
  position: relative;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 200px;
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-neutral-200);
}

.chart-bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.bar-container {
  display: flex;
  gap: var(--space-1);
  align-items: flex-end;
  height: 180px;
}

.chart-bar {
  width: 16px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: height var(--transition-slow);
}

.chart-bar.optimistic { background: var(--color-primary-500); }
.chart-bar.realistic { background: var(--color-info); }

.bar-label {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
  font-weight: var(--font-medium);
}

.chart-baseline {
  position: absolute;
  left: 0;
  right: 0;
  border-top: 2px dashed var(--color-neutral-300);
  display: flex;
  align-items: center;
}

.baseline-label {
  position: absolute;
  right: 0;
  transform: translateY(-50%);
  background: var(--color-neutral-0);
  padding: 0 var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

/* --------------------------------------------------------------------------
   Modal / Dialog
   -------------------------------------------------------------------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

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

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-neutral-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-700);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  background: var(--color-neutral-0);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: var(--space-10);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

/* Reminder Preview */
.reminder-preview {
  background: var(--color-neutral-50);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-4);
}

.reminder-preview-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  color: var(--color-neutral-500);
  margin-bottom: var(--space-2);
}

.reminder-preview-text {
  font-size: var(--text-sm);
  color: var(--color-neutral-700);
  line-height: var(--leading-relaxed);
}

/* --------------------------------------------------------------------------
   Empty & Loading States
   -------------------------------------------------------------------------- */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  background: var(--color-neutral-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-neutral-400);
}

.empty-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-700);
  margin-bottom: var(--space-2);
}

.empty-description {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  margin-bottom: var(--space-5);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-neutral-200);
  border-top-color: var(--color-primary-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-200) 25%,
    var(--color-neutral-100) 50%,
    var(--color-neutral-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */

.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-neutral-900);
  color: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform var(--transition-normal);
}

.toast.show {
  transform: translateX(0);
}

.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }
.toast.warning { background: #d97706; }

.toast-message {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */

@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pipeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: var(--space-4);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .pipeline {
    grid-template-columns: 1fr;
  }
  
  .page-header {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }
  
  .client-table {
    display: block;
    overflow-x: auto;
  }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-right { text-align: right; }
.text-center { text-align: center; }

.font-mono { font-family: var(--font-family-mono); }