/* ==========================================
   Dynatrace DPS Cost Calculator - Styles
   ========================================== */

:root {
  --dt-purple: #6F2DA8;
  --dt-purple-dark: #5A2391;
  --dt-purple-light: #8B4FC7;
  --dt-green: #14A8A0;
  --dt-green-dark: #0E8A83;
  --dt-green-light: #1EC8BF;
  --dt-blue: #4FD5E0;
  --dt-navy: #1A1A2E;
  --dt-dark: #0F0F1A;
  --dt-gray-100: #F7F7FA;
  --dt-gray-200: #EAEAEF;
  --dt-gray-300: #D1D1DB;
  --dt-gray-400: #9E9EB0;
  --dt-gray-600: #5A5A6E;
  --dt-gray-800: #2A2A3E;
  --dt-white: #FFFFFF;
  --dt-danger: #E74C3C;
  --dt-warning: #F39C12;
  --dt-success: #27AE60;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--dt-gray-100);
  color: var(--dt-navy);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--dt-navy) 0%, var(--dt-purple-dark) 100%);
  color: var(--dt-white);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--dt-white);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--dt-green) 0%, var(--dt-blue) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-text span {
  color: var(--dt-green-light);
}

.nav {
  display: flex;
  gap: 0.5rem;
}

.nav a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--dt-white);
  background: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--dt-navy) 0%, var(--dt-purple-dark) 50%, var(--dt-purple) 100%);
  color: var(--dt-white);
  padding: 4rem 2rem 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(20, 168, 160, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(111, 45, 168, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--dt-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--dt-green-light) 0%, var(--dt-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* Steps Indicator */
.steps-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 3rem;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.4);
}

.step-item.active {
  color: var(--dt-white);
}

.step-item.completed {
  color: var(--dt-green-light);
}

.step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.step-item.active .step-number {
  background: var(--dt-green);
  border-color: var(--dt-green);
  color: var(--dt-white);
}

.step-item.completed .step-number {
  background: var(--dt-green);
  border-color: var(--dt-green);
  color: var(--dt-white);
}

.step-connector {
  width: 40px;
  height: 2px;
  background: rgba(255, 255, 255, 0.15);
}

.step-item.completed + .step-connector {
  background: var(--dt-green);
}

/* Main Content */
.main {
  max-width: 1200px;
  margin: -2rem auto 3rem;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

/* Section Labels */
.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dt-gray-400);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  padding-left: 0.25rem;
}

.section-label:first-of-type {
  margin-top: 0;
}

/* Capability Cards */
.capabilities-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.capabilities-grid.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.capabilities-grid.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.capability-card {
  background: var(--dt-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.capability-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--dt-gray-200);
  transition: var(--transition);
}

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

.capability-card.selected {
  border-color: var(--dt-purple);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--dt-purple);
}

.capability-card.selected::before {
  background: linear-gradient(90deg, var(--dt-purple), var(--dt-green));
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.card-icon.fullstack {
  background: linear-gradient(135deg, #EDE7F6, #D1C4E9);
  color: var(--dt-purple);
}

.card-icon.browser {
  background: linear-gradient(135deg, #E0F2F1, #B2DFDB);
  color: var(--dt-green-dark);
}

.card-icon.http {
  background: linear-gradient(135deg, #E0F7FA, #B2EBF2);
  color: #0097A7;
}

.card-icon.rum {
  background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
  color: #E65100;
}

.card-icon.infra {
  background: linear-gradient(135deg, #E8EAF6, #C5CAE9);
  color: #283593;
}

.card-icon.foundation {
  background: linear-gradient(135deg, #F3E5F5, #E1BEE7);
  color: #7B1FA2;
}

.card-icon.logs {
  background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
  color: #2E7D32;
}

.card-icon.other {
  background: linear-gradient(135deg, #FCE4EC, #F8BBD0);
  color: #C2185B;
}

/* Gateway Cards */
.gateway-card {
  border: 2px dashed var(--dt-gray-300);
  background: linear-gradient(135deg, var(--dt-white) 0%, var(--dt-gray-100) 100%);
}

.gateway-card::before {
  background: linear-gradient(90deg, var(--dt-green), var(--dt-blue)) !important;
  opacity: 0.6;
}

.gateway-card:hover {
  border-color: var(--dt-purple);
  border-style: solid;
}

.card-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--dt-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dt-gray-400);
  transition: var(--transition);
}

.gateway-card:hover .card-arrow {
  background: var(--dt-purple);
  color: var(--dt-white);
}

.card-checkbox {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid var(--dt-gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.capability-card.selected .card-checkbox {
  background: var(--dt-purple);
  border-color: var(--dt-purple);
  color: var(--dt-white);
}

.card-checkbox svg {
  width: 14px;
  height: 14px;
  opacity: 0;
  transition: var(--transition);
}

.capability-card.selected .card-checkbox svg {
  opacity: 1;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--dt-navy);
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--dt-gray-400);
  font-weight: 500;
  font-family: 'Fira Code', 'Consolas', monospace;
  margin-bottom: 0.75rem;
}

.card-description {
  font-size: 0.9rem;
  color: var(--dt-gray-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.card-features {
  list-style: none;
  margin-bottom: 1.25rem;
}

.card-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.3rem 0;
  font-size: 0.85rem;
  color: var(--dt-gray-600);
}

.card-features li svg {
  width: 16px;
  height: 16px;
  color: var(--dt-green);
  flex-shrink: 0;
  margin-top: 2px;
}

.card-features {
  flex-grow: 1;
}

.card-pricing {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--dt-gray-200);
  margin-top: auto;
}

.card-price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dt-purple);
}

.card-price-unit {
  font-size: 0.8rem;
  color: var(--dt-gray-400);
  font-weight: 500;
}

/* Action Bar */
.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--dt-white);
  padding: 1.25rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-top: 1rem;
}

.selection-info {
  font-size: 0.9rem;
  color: var(--dt-gray-600);
}

.selection-info strong {
  color: var(--dt-purple);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--dt-purple) 0%, var(--dt-purple-dark) 100%);
  color: var(--dt-white);
  box-shadow: 0 4px 15px rgba(111, 45, 168, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(111, 45, 168, 0.4);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--dt-gray-100);
  color: var(--dt-gray-600);
  border: 1px solid var(--dt-gray-200);
}

.btn-secondary:hover {
  background: var(--dt-gray-200);
  color: var(--dt-navy);
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* ==========================================
   Calculator Page Styles
   ========================================== */

/* Calculator Sections */
.calculator-sections {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.calc-section {
  background: var(--dt-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.calc-section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--dt-gray-200);
  background: var(--dt-gray-100);
}

.calc-section-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.calc-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dt-navy);
}

.calc-section-subtitle {
  font-size: 0.8rem;
  color: var(--dt-gray-400);
  font-weight: 500;
}

.calc-section-body {
  padding: 2rem;
}

/* Form Elements */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--dt-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--dt-gray-400);
  font-style: italic;
}

.form-input {
  padding: 0.75rem 1rem;
  border: 2px solid var(--dt-gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  color: var(--dt-navy);
  transition: var(--transition);
  background: var(--dt-white);
}

.form-input:focus {
  outline: none;
  border-color: var(--dt-purple);
  box-shadow: 0 0 0 3px rgba(111, 45, 168, 0.1);
}

.form-input::placeholder {
  color: var(--dt-gray-300);
}

/* Section Cost Display */
.section-cost {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-top: 1px solid var(--dt-gray-200);
  background: var(--dt-gray-100);
}

.section-cost-label {
  font-size: 0.85rem;
  color: var(--dt-gray-600);
  font-weight: 500;
}

.section-cost-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dt-purple);
}

/* Total Summary */
.total-summary {
  background: linear-gradient(135deg, var(--dt-navy) 0%, var(--dt-purple-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: var(--dt-white);
  box-shadow: var(--shadow-xl);
}

.total-summary-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 1rem;
}

.total-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.total-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
}

.total-row-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.total-row-value {
  font-size: 1rem;
  font-weight: 700;
}

.total-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
  margin: 0.5rem 0;
}

.total-grand {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 0.5rem;
}

.total-grand-label {
  font-size: 1rem;
  font-weight: 600;
}

.total-grand-value {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--dt-green-light) 0%, var(--dt-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.total-monthly {
  text-align: right;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 0.25rem;
}

/* Info Box */
.info-box {
  background: #F3E8FF;
  border: 1px solid #E9D5FF;
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 1rem;
}

.info-box-icon {
  color: var(--dt-purple);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-box-text {
  font-size: 0.85rem;
  color: var(--dt-purple-dark);
  line-height: 1.5;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--dt-gray-400);
  font-size: 0.8rem;
}

.footer a {
  color: var(--dt-purple);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding: 3rem 1.5rem 4rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .main {
    padding: 0 1rem;
  }

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

  .action-bar {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .steps-indicator {
    flex-wrap: wrap;
  }

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

  .total-grand-value {
    font-size: 1.5rem;
  }
}

/* Utilities */
.hidden {
  display: none !important;
}

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

.fade-in {
  animation: fadeIn 0.4s ease-out;
}