/* ==========================================================================
   JERRY J. HUDSON — MASTER STYLESHEET
   Dark Navy Theme · Clean Typography · Restrained Technical Aesthetics
   ========================================================================== */
@import "tailwindcss";

:root {
  --bg-main: #06182C;
  --bg-alt: #0A213A;
  --color-primary: #168BEB;
  --color-accent: #18D5E8;
  --text-primary: #F5F7FA;
  --text-secondary: #9DB6D3;
  --border-subtle: rgba(100, 180, 255, 0.18);
  --border-hover: rgba(24, 213, 232, 0.35);
  --glass-bg: rgba(15, 47, 78, 0.55);
  --glass-bg-hover: rgba(22, 65, 108, 0.65);
  --glass-navbar: rgba(6, 24, 44, 0.88);
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  color-scheme: dark;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Prevent body scrolling when modal/menu is open */
body.overflow-hidden {
  overflow: hidden;
}

/* Focus visibility for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Recurring brand accent line beneath major headings */
.accent-line {
  display: inline-block;
  width: 52px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  margin-top: 12px;
  margin-bottom: 20px;
}

/* Glassmorphism surfaces */
.glass-panel {
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-panel-hover:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  background-color: var(--glass-bg-hover);
  box-shadow: 0 12px 28px -8px rgba(6, 24, 44, 0.7), 0 0 20px -5px rgba(22, 139, 235, 0.2);
}

/* Interactive Project Card */
.project-card {
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 36px -10px rgba(6, 24, 44, 0.8), 0 0 24px -6px rgba(22, 139, 235, 0.25);
}

.project-card img {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover img {
  transform: scale(1.02);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
  background-color: #1a96fc;
  box-shadow: 0 4px 14px rgba(22, 139, 235, 0.4);
  transform: translateY(-1px);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(15, 47, 78, 0.3);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              color 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-secondary:hover {
  background-color: rgba(22, 139, 235, 0.12);
  border-color: rgba(24, 213, 232, 0.5);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* Sticky Navbar Transitions */
#navbar {
  transition: background-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              backdrop-filter 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

#navbar.scrolled {
  background-color: var(--glass-navbar);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 20px -2px rgba(3, 12, 22, 0.6);
}

/* Nav links */
.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
  padding: 0.375rem 0.125rem;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Subtle background grid pattern for hero */
.hero-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(100, 180, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(100, 180, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* Subtle radial glow */
.hero-radial-glow {
  background: radial-gradient(circle at 75% 30%, rgba(22, 139, 235, 0.16) 0%, rgba(24, 213, 232, 0.05) 35%, transparent 70%);
}

/* Section alternating backgrounds */
.section-alt {
  background-color: var(--bg-alt);
}

/* Reveal on scroll animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Form styling */
.form-input,
.form-textarea {
  width: 100%;
  background-color: rgba(10, 33, 58, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(24, 213, 232, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(157, 182, 211, 0.6);
}

/* Modal overlays */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(3, 12, 22, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  max-width: 720px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 24px 48px -12px rgba(2, 8, 16, 0.9), 0 0 30px -5px rgba(22, 139, 235, 0.25);
  transform: scale(0.96);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

/* Custom scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
  background: rgba(100, 180, 255, 0.25);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(22, 139, 235, 0.5);
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}