/* ==========================================================================
   Glenn Sitter - Premium Personal Site Design System
   ========================================================================== */

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(18, 25, 41, 0.65);
  --bg-card-hover: rgba(26, 36, 60, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-primary: #6366f1;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --gradient-main: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #8b5cf6 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Background Glows */
.bg-blur {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-primary);
  top: -100px;
  left: -100px;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: var(--accent-cyan);
  top: 40%;
  right: -200px;
}

.glow-3 {
  width: 450px;
  height: 450px;
  background: var(--accent-purple);
  bottom: -100px;
  left: 20%;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

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

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-normal);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.25rem 0;
  background: rgba(9, 13, 22, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

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

.brand-logo {
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.accent-dot {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.nav-item:hover {
  color: var(--text-main);
}

.btn-nav {
  padding: 0.6rem 1.3rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-main) !important;
}

.btn-nav:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  padding: 10rem 0 6rem 0;
}

.hero-container {
  max-width: 860px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  margin-bottom: 2rem;
}

.pulse-ring {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.badge-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: #a7f3d0;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.5rem auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}

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

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

/* Stats Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.stat-card {
  padding: 1.5rem;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Section Header */
.section-header {
  margin-bottom: 3.5rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.about-card .card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.about-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.about-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Skills Badges */
.skills-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  padding: 2.5rem;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
}

.tag-icon {
  color: var(--accent-primary);
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card .project-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.project-tech {
  display: flex;
  gap: 0.5rem;
}

.project-tech span {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

/* Contact Section */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  padding: 3rem;
}

.contact-info h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.item-icon {
  font-size: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.75rem;
  border-radius: var(--radius-md);
}

.contact-item strong {
  display: block;
  font-size: 0.9rem;
}

.contact-item span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Form Controls */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.w-full {
  width: 100%;
}

.form-status {
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  text-align: center;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.hidden {
  display: none !important;
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
}

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

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.footer-meta {
  display: flex;
  gap: 0.75rem;
}

.meta-badge {
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-dim);
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: var(--bg-dark);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: flex;
  }
  .hero-actions {
    flex-direction: column;
  }
  .footer-container {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}