/* ============================================
   FINANCIAL CALCULATOR PLATFORM - DESIGN SYSTEM
   ============================================ */

/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   CSS RESET & BASE
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Primary brand colors (default - overridden by customer branding) */
  --brand-primary: #6366f1;
  --brand-primary-light: #818cf8;
  --brand-primary-dark: #4f46e5;
  --brand-primary-rgb: 99, 102, 241;

  /* Secondary/Gradient colors */
  --brand-secondary: #8b5cf6;
  --brand-secondary-rgb: 139, 92, 246;

  /* Accent color */
  --brand-accent: #10b981;
  --brand-accent-rgb: 16, 185, 129;

  /* Neutral palette */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Semantic colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-dark: #059669;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-dark: #d97706;
  --error: #ef4444;
  --error-light: #fee2e2;
  --error-dark: #dc2626;
  --info: #3b82f6;
  --info-light: #dbeafe;
  --info-dark: #2563eb;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.12);

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

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* ============================================
   BASE TYPOGRAPHY
   ============================================ */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--gray-900);
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   GLASSMORPHISM UTILITIES
   ============================================ */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.glass-card:hover::before {
  opacity: 1;
}

/* ============================================
   CALCULATOR INPUT STYLES (Vecna-inspired)
   ============================================ */
.calc-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

@media (max-width: 1024px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

.calc-panel {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-card);
}

.calc-panel-sticky {
  position: sticky;
  top: var(--spacing-xl);
}

.calc-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.calc-subtitle {
  font-size: var(--font-size-base);
  color: var(--gray-500);
  margin-bottom: var(--spacing-xl);
}

.calc-input-group {
  margin-bottom: var(--spacing-lg);
}

.calc-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
}

.calc-helper {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  margin-top: var(--spacing-xs);
}

.calc-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--gray-900);
  background: white;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.calc-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(var(--brand-primary-rgb), 0.15);
}

.calc-input::placeholder {
  color: var(--gray-400);
}

.calc-input-wrapper {
  position: relative;
}

.calc-input-prefix {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-500);
  font-weight: var(--font-medium);
  pointer-events: none;
}

.calc-input-suffix {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-500);
  font-weight: var(--font-medium);
  pointer-events: none;
}

.calc-input-with-prefix {
  padding-left: 2.5rem;
}

.calc-input-with-suffix {
  padding-right: 2.5rem;
}

.calc-select {
  width: 100%;
  padding: 0.875rem 2.5rem 0.875rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--gray-900);
  background: white url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E") no-repeat right 0.75rem center;
  background-size: 1.25rem;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.calc-select:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(var(--brand-primary-rgb), 0.15);
}

/* ============================================
   BUTTON STYLES
   ============================================ */
.calc-button {
  width: 100%;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-semibold);
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.calc-button-primary {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(var(--brand-primary-rgb), 0.4);
}

.calc-button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--brand-primary-rgb), 0.5);
}

.calc-button-primary:active {
  transform: translateY(0);
}

.calc-button-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.calc-button-secondary:hover {
  background: var(--gray-200);
}

/* Brand button (uses CSS variable for dynamic color) */
.brand-button {
  background: var(--brand-primary);
  color: white;
  transition: all var(--transition-base);
}

.brand-button:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.brand-text-primary {
  color: var(--brand-primary);
}

.brand-bg-primary {
  background-color: var(--brand-primary);
}

.brand-bg-light {
  background-color: rgba(var(--brand-primary-rgb), 0.1);
}

/* ============================================
   RESULTS DISPLAY STYLES
   ============================================ */
.results-hero {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  color: white;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.results-hero-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-medium);
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.results-hero-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
}

@media (min-width: 640px) {
  .results-hero-value {
    font-size: var(--font-size-5xl);
  }
}

.results-hero-subtext {
  font-size: var(--font-size-sm);
  opacity: 0.85;
  margin-top: var(--spacing-sm);
}

.results-metric {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.results-metric-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-medium);
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.results-metric-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
}

.results-metric-value.positive {
  color: var(--success);
}

.results-metric-value.negative {
  color: var(--error);
}

.results-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--gray-100);
}

.results-row:last-child {
  border-bottom: none;
}

.results-row-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.results-row-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
  color: var(--gray-900);
}

/* ============================================
   STATUS/ALERT BOXES
   ============================================ */
.status-box {
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 1px solid;
}

.status-box-success {
  background: var(--success-light);
  border-color: var(--success);
  color: var(--success-dark);
}

.status-box-warning {
  background: var(--warning-light);
  border-color: var(--warning);
  color: var(--warning-dark);
}

.status-box-error {
  background: var(--error-light);
  border-color: var(--error);
  color: var(--error-dark);
}

.status-box-info {
  background: var(--info-light);
  border-color: var(--info);
  color: var(--info-dark);
}

/* ============================================
   PORTAL CALCULATOR CARDS (Financia-inspired)
   ============================================ */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
}

.portal-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: var(--spacing-xl);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.portal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portal-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.portal-card:hover::before {
  opacity: 1;
}

.portal-card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 8px 20px rgba(var(--brand-primary-rgb), 0.35);
}

.portal-card-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.portal-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.portal-card-description {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  line-height: var(--leading-relaxed);
}

.portal-card-arrow {
  position: absolute;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.portal-card:hover .portal-card-arrow {
  background: var(--brand-primary);
  color: white;
  transform: translateX(4px);
}

/* ============================================
   LEAD CAPTURE FORM
   ============================================ */
.lead-capture {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  border: 2px dashed var(--gray-200);
}

.lead-capture-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.lead-capture-subtitle {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   CHART CONTAINER
   ============================================ */
.chart-container {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 1px solid var(--gray-200);
}

.chart-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-semibold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   BRANDED HEADER
   ============================================ */
.branded-header {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-md) var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.branded-header-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.branded-header-logo {
  height: 40px;
  object-fit: contain;
}

.branded-header-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-bold);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

.animate-slide-up {
  animation: slideUp var(--transition-slow) ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Staggered animation for lists */
.animate-stagger > * {
  opacity: 1;
  transform: translateY(0);
  animation: cardEntrance 0.5s ease-out backwards;
}

@keyframes cardEntrance {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
}

.animate-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.animate-stagger > *:nth-child(2) { animation-delay: 0.1s; }
.animate-stagger > *:nth-child(3) { animation-delay: 0.15s; }
.animate-stagger > *:nth-child(4) { animation-delay: 0.2s; }
.animate-stagger > *:nth-child(5) { animation-delay: 0.25s; }
.animate-stagger > *:nth-child(6) { animation-delay: 0.3s; }
.animate-stagger > *:nth-child(7) { animation-delay: 0.35s; }
.animate-stagger > *:nth-child(8) { animation-delay: 0.4s; }

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 640px) {
  .calc-container {
    padding: var(--spacing-md);
  }

  .calc-panel {
    padding: var(--spacing-lg);
  }

  .portal-grid {
    grid-template-columns: 1fr;
    padding: var(--spacing-md);
  }

  .results-hero-value {
    font-size: var(--font-size-3xl);
  }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}