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

:root {
  /* PMG Color Palette */
  --pmg-navy: #0A2463;
  --pmg-navy-light: #0E3285;
  --pmg-blue: #0056B3;
  --pmg-blue-light: #2A7FDB;
  --pmg-gold: #F39C12;
  --pmg-gold-light: #F7B731;
  --pmg-orange: #E67E22;
  --pmg-white: #FFFFFF;
  --pmg-gray-50: #F8F9FA;
  --pmg-gray-100: #F1F3F5;
  --pmg-gray-200: #DEE2E6;
  --pmg-gray-300: #ADB5BD;
  --pmg-gray-400: #6C757D;
  --pmg-gray-500: #495057;
  --pmg-gray-600: #343A40;
  --pmg-input-bg: #FFFFF0;
  --pmg-danger: #E74C3C;
  --pmg-success: #27AE60;
  --pmg-info: #3498DB;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(10, 36, 99, 0.08);
  --shadow-md: 0 4px 12px rgba(10, 36, 99, 0.12);
  --shadow-lg: 0 8px 32px rgba(10, 36, 99, 0.16);
  --shadow-xl: 0 16px 48px rgba(10, 36, 99, 0.2);
  --shadow-glow: 0 0 20px rgba(243, 156, 18, 0.3);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 2rem;
  --font-4xl: 2.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--pmg-gray-600);
  background: var(--pmg-gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* ---- AUTH PAGES LAYOUT ---- */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--pmg-navy) 0%, var(--pmg-navy-light) 50%, var(--pmg-blue) 100%);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.auth-container::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.15) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation: float 8s ease-in-out infinite;
}

.auth-container::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.1) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) scale(1);
  }

  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.auth-card {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.auth-logo h1 {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--pmg-navy);
}

.auth-logo h1 span {
  color: var(--pmg-gold);
}

.auth-logo p {
  font-size: var(--font-sm);
  color: var(--pmg-gray-400);
  margin-top: var(--space-xs);
}

.auth-title {
  font-size: var(--font-xl);
  font-weight: 700;
  color: var(--pmg-navy);
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* ---- FORMS ---- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--pmg-gray-500);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--pmg-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-md);
  font-family: var(--font-family);
  background: var(--pmg-white);
  color: var(--pmg-gray-600);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--pmg-blue);
  box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

.form-input.editable {
  background: var(--pmg-input-bg);
}

.form-input.readonly {
  background: var(--pmg-gray-100);
  color: var(--pmg-gray-400);
  cursor: not-allowed;
}

.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--pmg-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-md);
  font-family: var(--font-family);
  background: var(--pmg-input-bg);
  color: var(--pmg-gray-600);
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%236C757D'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.form-select:focus {
  border-color: var(--pmg-blue);
  box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

.form-hint {
  font-size: var(--font-xs);
  color: var(--pmg-gray-300);
  margin-top: var(--space-xs);
}

.form-error-text {
  font-size: var(--font-xs);
  color: var(--pmg-danger);
  margin-top: var(--space-xs);
}

/* Verification code input */
.code-input-wrapper {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin: var(--space-xl) 0;
}

.code-input {
  width: 48px;
  height: 56px;
  text-align: center;
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--pmg-navy);
  border: 2px solid var(--pmg-gray-200);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.code-input:focus {
  border-color: var(--pmg-gold);
  box-shadow: 0 0 0 4px rgba(243, 156, 18, 0.15);
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-md);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--pmg-gold) 0%, var(--pmg-orange) 100%);
  color: var(--pmg-white);
  box-shadow: 0 4px 12px rgba(243, 156, 18, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(243, 156, 18, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--pmg-navy);
  color: var(--pmg-white);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--pmg-navy-light);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--pmg-blue);
  border: 2px solid var(--pmg-blue);
}

.btn-outline:hover:not(:disabled) {
  background: var(--pmg-blue);
  color: var(--pmg-white);
}

.btn-ghost {
  background: transparent;
  color: var(--pmg-gray-400);
}

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

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: var(--font-lg);
}

/* ---- LAYOUT ---- */
.app-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: var(--pmg-navy);
  color: var(--pmg-white);
  padding: 0 var(--space-xl);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.app-header-logo {
  font-size: var(--font-lg);
  font-weight: 800;
  color: var(--pmg-white);
  text-decoration: none;
}

.app-header-logo span {
  color: var(--pmg-gold);
}

.app-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.app-header-user {
  font-size: var(--font-sm);
  color: var(--pmg-gray-300);
}

.app-main {
  flex: 1;
  padding: var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ---- CARDS ---- */
.card {
  background: var(--pmg-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

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

.card-title {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--pmg-navy);
}

.card-subtitle {
  font-size: var(--font-sm);
  color: var(--pmg-gray-400);
}

/* ---- RESULT CARDS ---- */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.result-card {
  background: var(--pmg-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--pmg-blue), var(--pmg-gold));
}

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

.result-card.highlight {
  background: linear-gradient(135deg, var(--pmg-navy) 0%, var(--pmg-navy-light) 100%);
  color: var(--pmg-white);
}

.result-card.highlight::before {
  background: linear-gradient(90deg, var(--pmg-gold), var(--pmg-orange));
}

.result-card.highlight .result-label {
  color: var(--pmg-gray-200);
}

.result-card.highlight .result-value {
  color: var(--pmg-gold);
}

.result-card.danger .result-value {
  color: var(--pmg-danger);
}

.result-card.success .result-value {
  color: var(--pmg-success);
}

.result-label {
  font-size: var(--font-sm);
  color: var(--pmg-gray-400);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.result-value {
  font-size: var(--font-3xl);
  font-weight: 800;
  color: var(--pmg-navy);
  line-height: 1.1;
}

.result-detail {
  font-size: var(--font-xs);
  color: var(--pmg-gray-300);
  margin-top: var(--space-sm);
}

/* ---- WIZARD STEPS ---- */
.wizard-steps {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-xl);
  gap: var(--space-xs);
}

.wizard-step {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--pmg-gray-300);
  background: var(--pmg-gray-100);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.wizard-step.active {
  color: var(--pmg-white);
  background: var(--pmg-blue);
  border-color: var(--pmg-blue);
}

.wizard-step.completed {
  color: var(--pmg-success);
  background: rgba(39, 174, 96, 0.1);
  border-color: var(--pmg-success);
}

.wizard-step-number {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--font-sm);
}

.wizard-step.active .wizard-step-number {
  background: rgba(255, 255, 255, 0.2);
}

.wizard-step-connector {
  width: 32px;
  height: 2px;
  background: var(--pmg-gray-200);
  flex-shrink: 0;
}

.wizard-step-connector.completed {
  background: var(--pmg-success);
}

/* ---- SECTION HEADERS ---- */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--pmg-gray-100);
}

.section-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--pmg-blue), var(--pmg-navy));
  color: var(--pmg-white);
  font-size: var(--font-xl);
  flex-shrink: 0;
}

.section-title {
  font-size: var(--font-xl);
  font-weight: 700;
  color: var(--pmg-navy);
}

.section-subtitle {
  font-size: var(--font-sm);
  color: var(--pmg-gray-400);
}

/* ---- FORM GRID ---- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md) var(--space-lg);
}

.form-grid-full {
  grid-column: 1 / -1;
}

/* ---- COSTS TABLE ---- */
.costs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-md);
}

.costs-table th,
.costs-table td {
  padding: 10px 16px;
  text-align: left;
  font-size: var(--font-sm);
}

.costs-table th {
  font-weight: 700;
  color: var(--pmg-navy);
  border-bottom: 2px solid var(--pmg-navy);
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.costs-table tr:nth-child(even) {
  background: var(--pmg-gray-50);
}

.costs-table tr:hover {
  background: rgba(0, 86, 179, 0.04);
}

.costs-table .total-row {
  font-weight: 700;
  color: var(--pmg-navy);
  border-top: 2px solid var(--pmg-navy);
  background: var(--pmg-gray-100) !important;
}

.costs-table .value-col {
  text-align: right;
  font-family: 'Inter', monospace;
  font-weight: 600;
}

/* ---- ALERTS ---- */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: var(--font-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  animation: slideUp 0.3s ease;
}

.alert-warning {
  background: rgba(243, 156, 18, 0.1);
  border-left: 4px solid var(--pmg-gold);
  color: var(--pmg-orange);
}

.alert-danger {
  background: rgba(231, 76, 60, 0.1);
  border-left: 4px solid var(--pmg-danger);
  color: var(--pmg-danger);
}

.alert-success {
  background: rgba(39, 174, 96, 0.1);
  border-left: 4px solid var(--pmg-success);
  color: var(--pmg-success);
}

.alert-info {
  background: rgba(52, 152, 219, 0.1);
  border-left: 4px solid var(--pmg-info);
  color: var(--pmg-info);
}

/* ---- LINK ---- */
.link {
  color: var(--pmg-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.link:hover {
  color: var(--pmg-navy);
  text-decoration: underline;
}

/* ---- BADGE ---- */
.badge {
  display: inline-flex;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: 600;
}

.badge-gold {
  background: rgba(243, 156, 18, 0.15);
  color: var(--pmg-orange);
}

.badge-blue {
  background: rgba(0, 86, 179, 0.1);
  color: var(--pmg-blue);
}

/* ---- SPINNER ---- */
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--pmg-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ---- RESPONSIVE ---- */

/* Tablet */
@media (max-width: 768px) {
  .auth-card {
    padding: var(--space-lg);
    max-width: 400px;
  }

  .auth-logo h1 {
    font-size: var(--font-xl);
  }

  .app-header {
    padding: 0 var(--space-md);
    height: 56px;
  }

  .app-header-logo {
    font-size: var(--font-md);
    line-height: 1.2;
  }

  .app-main {
    padding: var(--space-md);
  }

  .wizard-steps {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .wizard-step span:not(.wizard-step-number) {
    display: none;
  }

  .wizard-step-connector {
    display: none;
  }

  .wizard-step {
    padding: var(--space-xs) var(--space-sm);
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

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

  .result-value {
    font-size: var(--font-2xl);
  }

  /* Costs table: horizontal scroll on small screens */
  .costs-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .costs-table th,
  .costs-table td {
    padding: 8px 12px;
    font-size: var(--font-xs);
    white-space: nowrap;
  }

  /* Navigation buttons stack vertically on mobile */
  .nav-actions {
    flex-direction: column-reverse;
    gap: var(--space-sm);
  }

  .nav-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Card padding reduced */
  .card {
    padding: var(--space-md);
  }

  /* Section header compact */
  .section-title {
    font-size: var(--font-lg);
  }

  .section-icon {
    width: 36px;
    height: 36px;
    font-size: var(--font-md);
  }

  /* Simulation items stack */
  .simulation-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
    padding: var(--space-md);
  }

  /* Results page 2-column detail grid goes 1 col */
  .card+.card {
    margin-top: var(--space-md);
  }

  /* Touch-friendly inputs */
  .form-input,
  .form-select {
    padding: 14px 16px;
    font-size: 16px;
    /* Prevents iOS zoom on focus */
  }

  .btn-lg {
    padding: 14px 24px;
    font-size: var(--font-md);
  }
}

/* Mobile small */
@media (max-width: 480px) {
  .auth-container {
    padding: var(--space-md);
  }

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

  .auth-logo h1 {
    font-size: var(--font-lg);
  }

  .code-input-wrapper {
    gap: var(--space-xs);
  }

  .code-input {
    width: 40px;
    height: 48px;
    font-size: var(--font-xl);
  }

  .app-header-logo {
    font-size: var(--font-sm);
    max-width: 200px;
  }

  /* Result card metrics */
  .result-card {
    padding: var(--space-md);
  }

  .result-value {
    font-size: var(--font-xl);
  }

  .result-label {
    font-size: var(--font-xs);
  }

  /* Header actions */
  .app-header-user {
    display: none;
  }

  .btn-sm {
    padding: 6px 10px;
    font-size: var(--font-xs);
  }
}

/* Very small screens (iPhone SE, Galaxy S) */
@media (max-width: 360px) {
  .auth-logo h1 {
    font-size: var(--font-md);
  }

  .wizard-step {
    min-width: 38px;
    min-height: 38px;
  }

  .wizard-step-number {
    width: 24px;
    height: 24px;
    font-size: var(--font-xs);
  }

  .app-header {
    padding: 0 var(--space-sm);
  }
}

/* ---- EMPTY STATE ---- */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--pmg-gray-300);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.empty-state-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--pmg-gray-500);
  margin-bottom: var(--space-sm);
}

/* ---- NAVIGATION ---- */
.nav-actions {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-xl);
  gap: var(--space-md);
}

/* ---- PIE CHART ---- */
.chart-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-sm);
}

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ---- SIMULATION LIST ---- */
.simulation-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.simulation-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--pmg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--pmg-gray-200);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.simulation-item:hover {
  border-color: var(--pmg-blue);
  box-shadow: var(--shadow-sm);
}

.simulation-name {
  font-weight: 600;
  color: var(--pmg-navy);
}

.simulation-date {
  font-size: var(--font-xs);
  color: var(--pmg-gray-300);
}

/* ---- CONDITIONAL FIELD ---- */
.conditional-field {
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.conditional-field.hidden {
  max-height: 0;
  opacity: 0;
  margin: 0 !important;
}

.conditional-field.visible {
  max-height: 200px;
  opacity: 1;
}