/* ============================================
   DAVID MIKE — Brutalist Portfolio
   ============================================ */

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* --- VARIABLES --- */
:root {
  --bg: #0A0A0A;
  --bg-alt: #111111;
  --bg-card: #141414;
  --ink: #FFFFFF;
  --ink-muted: #888888;
  --ink-dim: #555555;
  --accent: #3B82F6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --border: #222222;
  --border-light: #2a2a2a;
  --radius: 12px;
  --radius-sm: 8px;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  --font-display: "Inter", -apple-system, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* --- LIGHT MODE --- */
[data-theme="light"] {
  --bg: #FAFAFA;
  --bg-alt: #F0F0F0;
  --bg-card: #FFFFFF;
  --ink: #0A0A0A;
  --ink-muted: #666666;
  --ink-dim: #999999;
  --accent: #2563EB;
  --accent-glow: rgba(37, 99, 235, 0.08);
  --border: #E0E0E0;
  --border-light: #EEEEEE;
}

/* --- LOADER --- */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: flex-end;
  pointer-events: none;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s var(--ease-out);
}
.loader.loaded { opacity: 0; visibility: hidden; }
.loader-bar {
  width: 100%; height: 3px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  animation: loader-fill 1.8s var(--ease-out) forwards;
}
@keyframes loader-fill {
  0% { transform: scaleX(0); }
  50% { transform: scaleX(0.7); }
  100% { transform: scaleX(1); }
}

/* --- NAV --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .nav {
  background: rgba(250, 250, 250, 0.85);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem; height: 64px;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem; font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.nav-links {
  display: flex; align-items: center; gap: 0.25rem;
}
.nav-link {
  padding: 0.5rem 1rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--ink-muted);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--ink); background: var(--bg-alt); }
.theme-btn {
  width: 36px; height: 36px; display: grid; place-items: center;
  font-size: 1.1rem; border-radius: var(--radius-sm);
  color: var(--ink-muted);
  transition: color 0.2s, background 0.2s;
  margin-left: 0.5rem;
}
.theme-btn:hover { color: var(--ink); background: var(--bg-alt); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--ink);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
}
.hero-glow {
  position: absolute;
  top: 20%; left: 50%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: var(--accent-glow);
  filter: blur(100px);
  transform: translate(-50%, -50%);
  animation: glow-pulse 6s ease-in-out infinite alternate;
}
@keyframes glow-pulse {
  0% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}
.hero-content {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; justify-content: center;
}
.hero-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}
.hero-accent {
  background: linear-gradient(135deg, var(--accent), #8B5CF6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-actions {
  display: flex; gap: 1rem; flex-wrap: wrap;
}
.hero-visual {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
}
.hero-portrait-frame {
  width: 340px; height: 400px;
  position: relative;
}
.hero-portrait-frame::before {
  content: '';
  position: absolute; inset: -3px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent), #8B5CF6, transparent 60%);
  z-index: -1;
}
.hero-portrait-placeholder {
  width: 100%; height: 100%;
  background: var(--bg-alt);
  border-radius: var(--radius);
  display: grid; place-items: center;
  border: 1px solid var(--border);
}
.hero-initials {
  font-family: var(--font-display);
  font-size: 5rem; font-weight: 900;
  color: var(--ink);
  opacity: 0.15;
  letter-spacing: -0.05em;
}

/* --- COUNTERS --- */
.counters {
  max-width: 1200px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.counter-item {
  background: var(--bg);
  padding: 2.5rem 1.5rem;
  text-align: center;
}
.counter-num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2.8rem; font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.counter-plus, .counter-percent {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 800;
  color: var(--accent);
}
.counter-label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- SECTIONS --- */
.section {
  max-width: 1200px; margin: 0 auto;
  padding: 6rem 1.5rem;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 3rem;
}

/* --- FILTER BAR --- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.filter-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem; font-weight: 500;
  color: var(--ink-muted);
  border: 1px solid var(--border);
  border-radius: 100px;
  transition: all 0.2s var(--ease-out);
}
.filter-btn:hover { color: var(--ink); border-color: var(--ink-dim); }
.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* --- PROJECT GRID --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), border-color 0.3s;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}
.project-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.project-placeholder {
  width: 100%; height: 100%;
  background: var(--ph-bg, #111);
  display: grid; place-items: center;
  position: relative;
}
.project-placeholder span {
  font-family: var(--font-display);
  font-size: 2.5rem; font-weight: 900;
  color: var(--ph-accent, var(--accent));
  letter-spacing: 0.15em;
  opacity: 0.6;
}
.project-info {
  padding: 1.5rem;
}
.project-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.project-title {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 700;
  margin-bottom: 0.5rem;
}
.project-desc {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.project-link {
  font-size: 0.85rem; font-weight: 600;
  color: var(--accent);
  transition: opacity 0.2s;
}
.project-link:hover { opacity: 0.7; }

/* --- SERVICES --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.service-card {
  background: var(--bg);
  padding: 2.5rem 2rem;
  transition: background 0.3s;
}
.service-card:hover { background: var(--bg-alt); }
.service-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}
.service-title {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 0.75rem;
}
.service-desc {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* --- ABOUT --- */
.about-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-text p {
  font-size: 1rem;
  color: var(--ink-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}
.about-text .btn { margin-top: 0.5rem; }
.about-skills h3 {
  font-family: var(--font-display);
  font-size: 1rem; font-weight: 700;
  margin-bottom: 1rem;
}
.skills-list {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.skill-tag {
  padding: 0.4rem 1rem;
  font-size: 0.8rem; font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--ink-muted);
  transition: all 0.2s;
}
.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- TESTIMONIALS --- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}
.testimonial-stars {
  color: #F59E0B;
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.testimonial-text {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}
.testimonial-author {
  display: flex; align-items: center; gap: 0.75rem;
}
.testimonial-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 700;
  flex-shrink: 0;
}
.testimonial-name {
  font-style: normal;
  font-weight: 600;
  font-size: 0.9rem;
}
.testimonial-role {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-dim);
  margin-top: 0.1rem;
}

/* --- PROCESS --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.process-step {
  background: var(--bg);
  padding: 2.5rem 2rem;
  position: relative;
}
.step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: block;
}
.step-title {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 0.75rem;
}
.step-desc {
  font-size: 0.85rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* --- CONTACT --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-form {
  display: flex; flex-direction: column; gap: 1.25rem;
}
.form-row {
  display: flex; flex-direction: column; gap: 0.4rem;
}
.form-row label {
  font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}
.form-row input,
.form-row select,
.form-row textarea {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--ink);
  transition: border-color 0.2s;
  font-family: inherit;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  outline: none;
}
.form-row textarea { resize: vertical; }
.form-status {
  font-size: 0.85rem;
  color: var(--ink-muted);
}
.contact-info {
  display: flex; flex-direction: column; gap: 1.5rem;
}
.contact-item {
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.contact-item a {
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}
.contact-item a:hover { color: var(--accent); }
.contact-socials {
  display: flex; gap: 1rem;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 0.9rem; font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.25s var(--ease-out);
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}
.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border-light);
}
.btn-outline:hover {
  border-color: var(--ink);
  background: var(--bg-alt);
}
.btn-sm { padding: 0.6rem 1.5rem; font-size: 0.85rem; }
.btn-full { width: 100%; justify-content: center; }

/* --- FOOTER --- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  text-align: center;
}
.footer-nav {
  display: flex; justify-content: center; gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.85rem;
  color: var(--ink-muted);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--ink); }
.footer-social {
  display: flex; justify-content: center; gap: 1rem;
  margin-bottom: 1.5rem;
}
.footer-social a {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.75rem; font-weight: 700;
  color: var(--ink-muted);
  transition: all 0.2s;
}
.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--ink-dim);
  margin-bottom: 0.5rem;
}
.footer .attribution {
  font-size: 0.75rem;
  opacity: 0.5;
}
.footer .attribution a { color: var(--ink-dim); }
.footer .attribution a:hover { color: var(--accent); }

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 6rem; }
  .hero-visual { display: none; }
  .counters { grid-template-columns: repeat(2, 1fr); }
  .about-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 1rem;
    gap: 0.25rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease-out);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link { width: 100%; padding: 0.75rem 1rem; }
  .nav-toggle { display: flex; }
  .theme-btn { margin-left: auto; }
  .counters { grid-template-columns: repeat(2, 1fr); }
  .counter-item { padding: 1.5rem 1rem; }
  .counter-num { font-size: 2rem; }
  .section { padding: 4rem 1.25rem; }
  .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: clamp(1.8rem, 8vw, 2.5rem); }
}

/* --- REDUCED MOTION --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}