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

/* CSS Variables / Design System */
:root {
  --bg-dark: #070a13;
  --bg-deep: #030408;
  --bg-card: rgba(15, 23, 42, 0.45);
  --bg-card-hover: rgba(15, 23, 42, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-focus: rgba(59, 130, 246, 0.6);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Salesforce cloud-inspired premium gradients */
  --primary-gradient: linear-gradient(135deg, #1d9bf0 0%, #2563eb 50%, #4f46e5 100%);
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #d946ef 100%);
  --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --shadow-glow: 0 0 40px -10px rgba(59, 130, 246, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Global Glowing Backgrounds */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: -20%;
  width: 140%;
  height: 140%;
  background: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.12) 0%, rgba(139, 92, 246, 0.08) 30%, transparent 60%),
              radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.08) 0%, rgba(79, 70, 229, 0.06) 40%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Glassmorphism Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 19, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: var(--transition-smooth);
}

.logo:hover {
  transform: scale(1.02);
}

.logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--primary-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #fff;
  font-size: 1.25rem;
  box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

nav a:hover, nav a.active {
  color: var(--text-primary);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: var(--transition-smooth);
}

nav a:hover::after, nav a.active::after {
  width: 100%;
}

.cta-nav {
  background: var(--primary-gradient);
  color: #fff;
  padding: 0.6rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.cta-nav::after {
  display: none !important;
}

.cta-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  color: #fff;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-glow {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 0 25px rgba(139, 92, 246, 0.4);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(139, 92, 246, 0.7);
}

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  position: relative;
  text-align: center;
}

.badge-glow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

.hero h1 {
  font-size: 4rem;
  max-width: 900px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 50%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}

.hero-ctas {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

/* Services Grid Section */
.services-section {
  padding: 6rem 0;
  background: var(--bg-deep);
  position: relative;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-glow);
}

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

.service-icon {
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: var(--accent-blue);
  font-size: 1.75rem;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.975rem;
  line-height: 1.7;
}

/* Dreamforce Highlight Section */
.df-callout {
  padding: 8rem 0;
  text-align: center;
  position: relative;
}

.df-card {
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15) 0%, transparent 60%), var(--bg-card);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 24px;
  padding: 5rem 4rem;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.df-card h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #a855f7 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.df-card p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.df-meta {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3rem;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.df-meta-item {
  text-align: left;
}

.df-meta-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.df-meta-val {
  font-size: 1.1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
}

/* Dreamforce Registration Form Section */
.df-page-hero {
  padding: 6rem 0 4rem;
  text-align: center;
}

.df-page-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.df-page-hero p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

.form-section {
  padding-bottom: 8rem;
}

.form-wrapper {
  max-width: 650px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3.5rem;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
}

.form-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--accent-gradient);
  border-radius: 20px 20px 0 0;
}

.form-intro {
  margin-bottom: 2.5rem;
  text-align: center;
}

.form-intro h3 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.form-intro p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Form Styling - adhering strictly to validation rules */
.form-group {
  margin-bottom: 2rem;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.field-hint {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background: rgba(7, 10, 19, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.9rem 1.25rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-smooth);
  outline: none;
}

.form-control:focus {
  border-color: var(--border-color-focus);
  background: rgba(7, 10, 19, 0.7);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Validation Style overrides - :user-invalid and :user-valid */
.form-control:user-invalid {
  border-color: var(--error);
  background-color: var(--error-bg);
}

.form-control:user-valid {
  border-color: var(--success);
}

.error-message {
  display: none;
  color: var(--error);
  font-size: 0.825rem;
  margin-top: 0.5rem;
  font-weight: 500;
}

/* Reveal error message on invalid input state */
.form-control:user-invalid + .error-message {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Success Card */
.success-card {
  text-align: center;
  padding: 2rem 0;
}

.success-icon {
  width: 5rem;
  height: 5rem;
  background: var(--success-bg);
  border: 2px solid var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
  color: var(--success);
  font-size: 2.5rem;
  animation: scaleUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scaleUp {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.success-card h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  background: var(--success-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.success-card p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* Footer */
footer {
  margin-top: auto;
  background: #030408;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0;
  text-align: center;
  color: var(--text-muted);
}

footer .logo {
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

footer p {
  font-size: 0.9rem;
}

footer nav {
  margin: 1.5rem 0;
}

footer nav ul {
  justify-content: center;
}

footer nav a {
  font-size: 0.85rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 3rem;
  }
  .df-card h2 {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  .nav-container {
    height: 4.5rem;
  }
  nav {
    display: none; /* In a production environment, implement mobile hamburger drawer */
  }
  .nav-toggle {
    display: block;
  }
  .hero {
    padding: 6rem 0 4rem;
  }
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero p {
    font-size: 1.1rem;
  }
  .hero-ctas {
    flex-direction: column;
    gap: 1rem;
    max-width: 300px;
    margin: 0 auto;
  }
  .df-card {
    padding: 3rem 2rem;
  }
  .df-meta {
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
  }
  .form-wrapper {
    padding: 2rem;
  }
}