/* ═══════════════════════════════════════════
   P. ZIOME PORTFOLIO — Dark Mode
   Palette: NovaAI (indigo / cyan / deep navy)
   Fonts: Space Grotesk + JetBrains Mono
═══════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  /* Backgrounds */
  --bg-base:    #04091A;
  --bg-surface: #0C1830;
  --bg-raised:  #101E38;
  --bg-card:    #0D1B2E;

  /* Accent */
  --indigo:     #4F46E5;
  --indigo-dim: #3730A3;
  --indigo-pale: rgba(79, 70, 229, 0.14);
  --cyan:       #22D3EE;
  --cyan-dim:   #0891B2;

  /* Text */
  --text-primary:   #F0F4FF;
  --text-secondary: #B4BDD1;
  --text-muted:     #8491A8;

  /* Borders */
  --border:   rgba(255, 255, 255, 0.07);
  --border-md: rgba(255, 255, 255, 0.12);
  --border-hi: rgba(255, 255, 255, 0.20);

  /* Fonts */
  --ff: 'Space Grotesk', sans-serif;
  --fm: 'JetBrains Mono', monospace;

  /* Spacing */
  --section-pad: 96px;
  --max-w: 1160px;
  --radius: 10px;
  --radius-lg: 14px;
}

/* ── RESET ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button, input, textarea { font-family: var(--ff); }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--ff);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── SHARED UTILS ── */
.section-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 6%;
}

.section-eyebrow {
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 540px;
  line-height: 1.65;
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  background: var(--indigo);
  color: #fff;
  padding: 12px 24px;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .2s, transform .15s;
  letter-spacing: -.01em;
}
.btn-primary:hover { background: var(--indigo-dim); transform: translateY(-1px); }

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--border-md);
  cursor: pointer;
  transition: border-color .2s, color .2s, transform .15s;
}
.btn-ghost:hover { border-color: var(--border-hi); color: var(--text-primary); transform: translateY(-1px); }

.btn-link {
  display: inline-block;
  color: var(--indigo);
  font-size: 14px;
  font-weight: 500;
  transition: color .2s;
}
.btn-link:hover { color: var(--cyan); }

/* ── NAVBAR ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(4, 9, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background .3s;
}
#navbar.scrolled { background: rgba(4, 9, 26, 0.97); }

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 6%;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.01em;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .2s;
}
.nav-links li a:hover { color: var(--text-primary); }

.btn-nav {
  display: inline-block;
  background: var(--indigo);
  color: #fff;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
  transition: background .2s;
}
.btn-nav:hover { background: var(--indigo-dim); }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 16px 6% 24px;
  border-top: 1px solid var(--border);
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mob-link {
  font-size: 16px;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  transition: color .2s;
}
.mob-link:last-child { border-bottom: none; }
.mob-link:hover { color: var(--text-primary); }

/* Light mode overrides */
body.light {
  --bg-base:    #F4F6FB;
  --bg-surface: #EAEFF8;
  --bg-raised:  #FFFFFF;
  --bg-card:    #FFFFFF;

  --text-primary:   #0D1117;
  --text-secondary: #3D4A60;
  --text-muted:     #7A8AA0;

  --border:    rgba(0, 0, 0, 0.08);
  --border-md: rgba(0, 0, 0, 0.14);
  --border-hi: rgba(0, 0, 0, 0.22);
}

/* Navbar background in light mode */
body.light #navbar {
  background: rgba(244, 246, 251, 0.88);
}
body.light #navbar.scrolled {
  background: rgba(244, 246, 251, 0.98);
}

/* Form fields in light mode */
body.light .form-group input,
body.light .form-group textarea {
  background: #FFFFFF;
  color: #0D1117;
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-md);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .2s, color .2s, background .2s;
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--border-hi);
  color: var(--text-primary);
}
/* Show sun in dark mode, moon in light mode */
.icon-moon { display: none; }
body.light .icon-sun  { display: none; }
body.light .icon-moon { display: block; }
/* ── HERO ── */
.hero {
  padding: calc(64px + 80px) 6% 96px;
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 24px;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: blink 2.2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .35; transform: scale(.65); }
}

.hero-title {
  font-size: clamp(38px, 5.5vw, 64px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 22px;
}
.hero-title em {
  font-style: normal;
  color: var(--indigo);
}

.hero-body {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 52px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat-val {
  display: block;
  font-family: var(--fm);
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
}

/* Hero image */
.hero-right { position: relative; }
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--border-md);
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.hero-img-placeholder {
  position: absolute; inset: 0;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--fm);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
/* Hide placeholder when real img loads */
.hero-img-wrap img:not([src=""]):not([src="images/hero-photo.jpg"]) + .hero-img-placeholder,
.hero-img-wrap img[src]:not([src="images/hero-photo.jpg"]).loaded + .hero-img-placeholder { display: none; }

/* ── FEATURED SECTION ── */
.featured-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--section-pad) 0;
}

.featured-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
  margin-top: 36px;
}

.featured-preview {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-md);
  aspect-ratio: 16 / 10;
  background: var(--bg-raised);
}
.featured-img { width: 100%; height: 100%; object-fit: cover; }
.featured-img-placeholder {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--fm);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.tag {
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--indigo);
  background: var(--indigo-pale);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(79, 70, 229, .25);
}

.featured-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.featured-meta {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.featured-meta li {
  font-family: var(--fm);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: .04em;
}
.featured-meta li::before {
  content: '· ';
  color: var(--cyan);
}

.featured-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

/* ── WORK SECTION ── */
.work-section {
  padding: var(--section-pad) 0;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.work-card:hover {
  border-color: var(--border-md);
  transform: translateY(-4px);
}

.work-img-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.work-img { width: 100%; height: 100%; object-fit: cover; }
.work-img-placeholder {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-raised);
}
.work-img-placeholder.dark { background: #0a1525; }
.work-img-placeholder.light { background: #162035; }

.work-card-body { padding: 20px 22px 24px; }
.work-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -.01em;
}
.work-card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ── SKILLS SECTION ── */
.skills-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--section-pad) 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.skill-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  position: relative;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--indigo), transparent);
  opacity: 0;
  transition: opacity .2s;
}
.skill-card:hover { border-color: var(--border-md); transform: translateY(-3px); }
.skill-card:hover::before { opacity: 1; }

.skill-icon {
  color: var(--indigo);
  margin-bottom: 16px;
  width: 24px; height: 24px;
}

.skill-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -.01em;
}

.skill-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── ABOUT SECTION ── */
.about-section { padding: var(--section-pad) 0; }

.about-inner {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 72px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--border-md);
  flex-shrink: 0;
}
.about-img { width: 100%; height: 100%; object-fit: cover; }
.about-img-placeholder {
  position: absolute; inset: 0;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--fm);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.about-title {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
  margin-top: 8px;
}

.about-body {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.about-list li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 16px;
  position: relative;
}
.about-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--indigo);
  font-weight: 700;
}
.list-label {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── CONTACT SECTION ── */
.contact-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: var(--section-pad) 0;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.contact-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 16px;
  margin-top: 8px;
}

.contact-sub {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 40px;
  max-width: 380px;
}

.contact-meta { display: flex; flex-direction: column; gap: 18px; }
.contact-meta-row { display: flex; flex-direction: column; gap: 8px; }
.meta-label {
  font-family: var(--fm);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.meta-val {
  color: var(--cyan);
  font-size: 14px;
  transition: color .2s;
}
.meta-val:hover { color: var(--text-primary); }

.social-links { display: flex; gap: 12px; }
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 7px;
  border: 1px solid var(--border-md);
  color: var(--text-muted);
  transition: border-color .2s, color .2s, background .2s;
}
.social-link:hover {
  border-color: var(--indigo);
  color: var(--indigo);
  background: var(--indigo-pale);
}

/* ── CONTACT FORM ── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: .01em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-raised);
  border: 1px solid var(--border-md);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, .15);
}
.form-group textarea { min-height: 130px; }

.btn-submit {
  background: var(--indigo);
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .15s, opacity .2s;
  align-self: stretch;
  letter-spacing: -.01em;
}
.btn-submit:hover { background: var(--indigo-dim); transform: translateY(-1px); }
.btn-submit:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.form-status {
  font-size: 14px;
  min-height: 20px;
  text-align: center;
}
.form-status.success { color: #34D399; }
.form-status.error   { color: #F87171; }

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 6% 28px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.footer-logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
}
.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color .2s;
}
.footer-nav a:hover { color: var(--text-primary); }
.footer-social {
  display: flex;
  gap: 10px;
  margin-left: auto;
}
.footer-copy {
  max-width: var(--max-w);
  margin: 0 auto;
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--fm);
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ── RESPONSIVE ── */
@media (max-width: 1000px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: calc(64px + 56px);
    gap: 48px;
  }
  .hero-right { display: none; }
  .featured-inner { grid-template-columns: 1fr; }
  .work-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; }
  .about-img-wrap { max-width: 340px; aspect-ratio: 3/2; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  :root { --section-pad: 72px; }
  .nav-links, .btn-nav { display: none; }
  .nav-burger { display: flex; }
  .work-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-social { margin-left: 0; }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}