/* ============================================================
   JACQUELINE KNIGHT PORTFOLIO — MAIN STYLESHEET
   Dark Futuristic Aerospace / AI Enterprise Theme
   ============================================================ */

/* ── 1. CSS CUSTOM PROPERTIES ─────────────────────────────── */
:root {
  /* Colors */
  --clr-bg:          #020b18;
  --clr-bg-2:        #04111f;
  --clr-bg-card:     rgba(4, 20, 40, 0.7);
  --clr-primary:     #00c8ff;
  --clr-primary-dim: rgba(0,200,255,0.15);
  --clr-secondary:   #0056ff;
  --clr-accent:      #7b5fff;
  --clr-cyan:        #00e5ff;
  --clr-silver:      #a0b4c8;
  --clr-text:        #cdd9e5;
  --clr-text-muted:  #6b8099;
  --clr-white:       #ffffff;
  --clr-border:      rgba(0,200,255,0.15);
  --clr-border-glow: rgba(0,200,255,0.4);

  /* Gradients */
  --grad-primary:   linear-gradient(135deg, #00c8ff 0%, #0056ff 50%, #7b5fff 100%);
  --grad-hero:      linear-gradient(160deg, #00c8ff22 0%, #0056ff11 50%, transparent 100%);
  --grad-card:      linear-gradient(135deg, rgba(0,200,255,0.08) 0%, rgba(0,86,255,0.04) 100%);
  --grad-text:      linear-gradient(135deg, #00c8ff, #0056ff, #7b5fff);

  /* Typography */
  --font-heading: 'Orbitron', sans-serif;
  --font-body:    'Space Grotesk', 'Inter', sans-serif;
  --font-ui:      'Inter', sans-serif;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   4rem;
  --space-2xl:  6rem;
  --space-3xl:  8rem;

  /* Border Radius */
  --radius-sm:  0.5rem;
  --radius-md:  1rem;
  --radius-lg:  1.5rem;
  --radius-xl:  2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-glow:  0 0 30px rgba(0,200,255,0.15), 0 0 60px rgba(0,86,255,0.08);
  --shadow-card:  0 8px 32px rgba(0,0,0,0.4), 0 1px 0 rgba(0,200,255,0.1) inset;
  --shadow-btn:   0 4px 20px rgba(0,200,255,0.3);

  /* Transitions */
  --ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast:   150ms;
  --dur-med:    350ms;
  --dur-slow:   600ms;

  /* Nav */
  --nav-h: 80px;
}

/* Light mode overrides */
[data-theme="light"] {
  --clr-bg:       #f0f4f8;
  --clr-bg-2:     #e2eaf2;
  --clr-bg-card:  rgba(255,255,255,0.8);
  --clr-text:     #1a2a3a;
  --clr-text-muted: #4a6480;
  --clr-border:   rgba(0,86,255,0.15);
  --clr-border-glow: rgba(0,86,255,0.4);
  --shadow-card:  0 8px 32px rgba(0,0,20,0.12), 0 1px 0 rgba(0,86,255,0.1) inset;
}

/* ── 2. RESET & BASE ──────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
}
img, video { max-width: 100%; display: block; }
a { color: var(--clr-primary); text-decoration: none; transition: color var(--dur-fast) var(--ease); }
a:hover { color: var(--clr-cyan); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 3px; }

/* ── 3. UTILITY CLASSES ───────────────────────────────────── */
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: var(--space-3xl) 0; position: relative; }
.section-sm { padding: var(--space-xl) 0; position: relative; }

.section-tag {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-ui); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--clr-primary);
  background: var(--clr-primary-dim);
  border: 1px solid var(--clr-border-glow);
  padding: 0.4rem 1rem; border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}
.section-tag i { font-size: 0.7rem; }

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--clr-white);
  margin-bottom: 1rem;
}
[data-theme="light"] .section-title { color: #0a1628; }

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  font-size: 1.1rem; color: var(--clr-text-muted);
  max-width: 640px; line-height: 1.8;
}

.text-center { text-align: center; }
.text-center .section-sub { margin: 0 auto; }

/* ── 4. BUTTONS ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-ui); font-weight: 600; font-size: 0.95rem;
  padding: 0.85rem 2rem; border-radius: var(--radius-full);
  transition: all var(--dur-med) var(--ease);
  position: relative; overflow: hidden; cursor: pointer;
  letter-spacing: 0.02em;
}
.btn::before {
  content:''; position:absolute; inset:0;
  background: rgba(255,255,255,0.1);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-med) var(--ease);
}
.btn:hover::before { transform: scaleX(1); }

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(0,200,255,0.5);
  transform: translateY(-2px); color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border: 1.5px solid var(--clr-border-glow);
  backdrop-filter: blur(10px);
}
.btn-outline:hover {
  background: var(--clr-primary-dim);
  border-color: var(--clr-primary);
  transform: translateY(-2px); color: var(--clr-cyan);
}

.btn-nav {
  background: var(--clr-primary-dim);
  color: var(--clr-primary);
  border: 1px solid var(--clr-border-glow);
  font-size: 0.875rem; padding: 0.6rem 1.3rem;
}
.btn-nav:hover { background: var(--grad-primary); color: #fff; border-color: transparent; }
.btn-sm { padding: 0.6rem 1.4rem; font-size: 0.875rem; }

/* ── 5. GLASSMORPHISM CARD ────────────────────────────────── */
.glass-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--dur-med) var(--ease);
  position: relative; overflow: hidden;
}
.glass-card::before {
  content:''; position:absolute;
  top:0; left:0; right:0; height:1px;
  background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
  opacity:0; transition: opacity var(--dur-med) var(--ease);
}
.glass-card:hover { border-color: var(--clr-border-glow); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.glass-card:hover::before { opacity: 1; }

/* ── 6. SCROLL PROGRESS ───────────────────────────────────── */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--grad-primary);
  z-index: 9999;
  box-shadow: 0 0 10px var(--clr-primary);
  transition: width 0.1s linear;
}

/* ── 7. LOADER ────────────────────────────────────────────── */
.loader-screen {
  position: fixed; inset: 0;
  background: #010810;
  display: flex; align-items: center; justify-content: center;
  z-index: 99999;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
.loader-screen.hidden { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.loader-orb {
  width: 100px; height: 100px;
  position: relative; display: flex; align-items: center; justify-content: center;
}
.loader-initials {
  font-family: var(--font-heading); font-size: 1.6rem; font-weight: 900;
  background: var(--grad-text); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  position: relative; z-index: 1;
}
.loader-ring {
  position: absolute; border-radius: 50%;
  border: 2px solid transparent;
}
.r1 { width:100%; height:100%; border-top-color: var(--clr-primary); animation: spin 1.2s linear infinite; }
.r2 { width:75%; height:75%; border-right-color: var(--clr-secondary); animation: spin 0.9s linear infinite reverse; }
.r3 { width:50%; height:50%; border-bottom-color: var(--clr-accent); animation: spin 0.6s linear infinite; }

.loader-label {
  font-family: var(--font-ui); font-size: 0.8rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--clr-primary); opacity: 0.8;
}
.loader-track {
  width: 220px; height: 3px; background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full); overflow: hidden;
}
.loader-fill {
  height: 100%; width: 0%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  animation: load-fill 1.8s var(--ease) forwards;
}

@keyframes spin        { to { transform: rotate(360deg); } }
@keyframes load-fill   { to { width: 100%; } }

/* ── 8. NAVBAR ────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h); z-index: 1000;
  transition: all var(--dur-med) var(--ease);
}
.navbar.scrolled {
  background: rgba(2, 11, 24, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
[data-theme="light"] .navbar.scrolled { background: rgba(240,244,248,0.92); }

.nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 1.5rem; height: 100%;
  display: flex; align-items: center; gap: 2rem;
}
.nav-logo { display: flex; align-items: center; gap: 0.75rem; color: var(--clr-white); }
.nav-logo:hover { color: var(--clr-white); }
.logo-badge {
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 900; font-size: 0.9rem;
  color: #fff; flex-shrink: 0;
  box-shadow: 0 0 16px rgba(0,200,255,0.4);
}
.logo-copy { display: flex; flex-direction: column; }
.lc-name { font-family: var(--font-heading); font-size: 0.9rem; font-weight: 700; color: var(--clr-white); line-height: 1.2; }
.lc-role { font-size: 0.7rem; color: var(--clr-primary); letter-spacing: 0.1em; text-transform: uppercase; }
[data-theme="light"] .lc-name { color: #0a1628; }

.nav-menu {
  display: flex; align-items: center; gap: 0.25rem;
  margin-left: auto;
}
.nav-link {
  font-family: var(--font-ui); font-size: 0.88rem; font-weight: 500;
  color: var(--clr-silver); padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--dur-fast) var(--ease);
  position: relative;
}
.nav-link::after {
  content:''; position:absolute; bottom:2px; left:50%; right:50%;
  height:1.5px; background: var(--clr-primary);
  transition: all var(--dur-fast) var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--clr-primary); }
.nav-link:hover::after, .nav-link.active::after { left: 20%; right: 20%; }
[data-theme="light"] .nav-link { color: #4a6480; }
[data-theme="light"] .nav-link:hover, [data-theme="light"] .nav-link.active { color: var(--clr-secondary); }

.nav-end { display: flex; align-items: center; gap: 0.75rem; }
.theme-btn {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  background: var(--clr-primary-dim);
  border: 1px solid var(--clr-border);
  color: var(--clr-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem;
  transition: all var(--dur-fast) var(--ease);
}
.theme-btn:hover { background: var(--clr-primary); color: #fff; }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--clr-silver); border-radius: 2px;
  transition: all var(--dur-med) var(--ease);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 9. FOOTER ────────────────────────────────────────────── */
.site-footer {
  background: var(--clr-bg-2);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-2xl) 0 0;
  position: relative; overflow: hidden;
  margin-top: var(--space-3xl);
}
.footer-glow {
  position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 200px;
  background: radial-gradient(ellipse, rgba(0,200,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--clr-border);
}
.footer-tagline { font-size: 0.9rem; color: var(--clr-text-muted); line-height: 1.8; margin-bottom: 1.25rem; }
.footer-social { display: flex; gap: 0.75rem; }
.soc-link {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  background: var(--clr-primary-dim); border: 1px solid var(--clr-border);
  color: var(--clr-primary); display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem; transition: all var(--dur-fast) var(--ease);
}
.soc-link:hover { background: var(--clr-primary); color: #fff; transform: translateY(-2px); border-color: var(--clr-primary); }
.footer-heading { font-family: var(--font-heading); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--clr-primary); margin-bottom: 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: 0.875rem; color: var(--clr-text-muted); display: flex; align-items: center; gap: 0.5rem; transition: color var(--dur-fast) var(--ease); }
.footer-links a i { font-size: 0.65rem; color: var(--clr-primary); }
.footer-links a:hover { color: var(--clr-primary); }
.footer-contact-list { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-contact-list li { display: flex; align-items: center; gap: 0.75rem; font-size: 0.875rem; color: var(--clr-text-muted); }
.footer-contact-list i { color: var(--clr-primary); width: 16px; }
.footer-contact-list a { color: var(--clr-text-muted); }
.footer-contact-list a:hover { color: var(--clr-primary); }
.footer-bottom {
  padding: 1.5rem 0;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-bottom p { font-size: 0.85rem; color: var(--clr-text-muted); }
.footer-badges { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.f-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.75rem; color: var(--clr-text-muted);
  background: var(--clr-primary-dim); border: 1px solid var(--clr-border);
  padding: 0.3rem 0.75rem; border-radius: var(--radius-full);
}
.f-badge i { color: var(--clr-primary); font-size: 0.7rem; }

/* ── 10. BACK TO TOP ──────────────────────────────────────── */
.back-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 46px; height: 46px; border-radius: var(--radius-md);
  background: var(--grad-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; z-index: 500;
  box-shadow: var(--shadow-btn);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all var(--dur-med) var(--ease);
}
.back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,200,255,0.5); color:#fff; }

/* ── 11. CANVAS / PARTICLES BACKGROUND ───────────────────── */
#hero-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* ── 12. REVEAL ANIMATIONS ────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left  { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal-right { opacity: 0; transform: translateX( 40px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translateX(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ── 13. RESPONSIVE BREAKPOINTS ───────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --nav-h: 68px; }
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(2,11,24,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column; align-items: flex-start;
    padding: 1.5rem; gap: 0.25rem;
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-110%); opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease);
    z-index: 999;
  }
  [data-theme="light"] .nav-menu { background: rgba(240,244,248,0.97); }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { font-size: 1rem; padding: 0.75rem 1rem; width: 100%; border-radius: var(--radius-sm); }
  .hamburger { display: flex; }
  /* Hide the Book Call button entirely on mobile */
  .btn-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .footer-badges { justify-content: center; }
}