/* ============================================================
   drmixer.me — Personal Portfolio (Neo-Brutalist / Cyberpunk Minimal)
   Design: High contrast, stark lines, monospaced/grotesk typography
   Fonts: Inter (body) + Space Grotesk (display)
   ============================================================ */

/* --- RESET & TOKENS --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #000000;
  --surface: #0a0a0a;
  --surface-hover: #141414;
  --border: #333333;
  --text: #ffffff;
  --text-dim: #888888;
  
  --accent: #ccff00; /* Volt Green */
  --accent-hover: #b3e600;
  
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;

  --section-pad: clamp(80px, 12vw, 160px);
  --container: 1200px;
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-in-out: cubic-bezier(0.86, 0, 0.07, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* Base grid pattern for background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.15;
  pointer-events: none;
}

/* --- LAYOUT --- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
}

.section { padding: var(--section-pad) 0; position: relative; z-index: 10; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* --- NAV --- */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  padding: 24px 0;
  transition: all 0.4s var(--ease);
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--container); margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.6rem; letter-spacing: -0.04em;
  color: var(--text);
  text-transform: uppercase;
}
.accent {
  color: var(--accent);
}

.nav-links { display: flex; align-items: center; gap: 40px; }
.nav-links a {
  font-family: var(--font-display);
  font-size: 0.85rem; font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.1em;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--text); color: var(--bg) !important;
  padding: 8px 16px; border: none;
}
.nav-cta:hover {
  background: var(--accent); color: var(--bg) !important;
}

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; flex-direction: column; gap: 6px; }
.nav-toggle span { display: block; width: 32px; height: 2px; background: var(--text); transition: all 0.3s var(--ease); }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100dvh;
  background: var(--bg); z-index: 99; flex-direction: column; align-items: center; justify-content: center;
  gap: 32px; opacity: 0; pointer-events: none; transition: opacity 0.4s var(--ease);
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; color: var(--text-dim); text-transform: uppercase; transition: color 0.3s var(--ease); }
.mobile-menu a:hover { color: var(--accent); }

/* --- HERO --- */
.hero { position: relative; min-height: 100dvh; display: flex; align-items: center; justify-content: flex-start; overflow: hidden; padding-top: 80px; }
.hero-bg { display: none; } /* Hide old bg image for this theme */
.hero-content { position: relative; z-index: 10; text-align: left; max-width: 900px; padding: 0 clamp(20px, 5vw, 60px); margin: 0 auto; width: 100%; max-width: var(--container);}

.hero-label {
  display: inline-block; font-family: var(--font-display); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--bg); background: var(--accent); margin-bottom: 32px; padding: 8px 16px; border: 1px solid var(--accent);
}

.hero-title { margin-bottom: 24px; position: relative;}
.hero-name {
  display: block; font-family: var(--font-display); font-size: clamp(3.5rem, 8vw, 7rem); font-weight: 700; line-height: 0.95; letter-spacing: -0.05em;
  color: var(--text); text-transform: uppercase;
}
.hero-aka {
  display: block; font-family: var(--font-display); font-weight: 500; font-size: clamp(1.2rem, 3vw, 2.5rem); color: var(--text-dim); margin-top: 16px;
}

.hero-tagline { font-family: var(--font-display); font-size: clamp(1.2rem, 3vw, 2rem); font-weight: 500; color: var(--text); margin-bottom: 16px; line-height: 1.4; max-width: 800px;}
.hero-tagline em { font-style: normal; color: var(--accent); }
.hero-sub { font-size: clamp(1rem, 1.5vw, 1.25rem); color: var(--text-dim); font-weight: 400; margin-bottom: 48px; max-width: 600px; }

.hero-actions { display: flex; gap: 24px; justify-content: flex-start; flex-wrap: wrap; }

.hero-scroll-hint { position: absolute; bottom: 40px; right: clamp(20px, 5vw, 60px); display: flex; flex-direction: column; align-items: flex-end; gap: 12px; z-index: 10; }
.hero-scroll-hint span { font-family: var(--font-display); font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); font-weight: 700;}
.scroll-line { width: 2px; height: 80px; background: var(--border); position: relative; overflow: hidden; }
.scroll-line::after { content: ''; position: absolute; top: -100%; left: 0; width: 100%; height: 100%; background: var(--accent); animation: scrollDown 2s var(--ease) infinite; }
@keyframes scrollDown { 0% { top: -100%; } 50% { top: 0; } 100% { top: 100%; } }

/* --- BUTTONS --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 18px 40px;
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  transition: all 0.2s var(--ease); cursor: pointer; border: 2px solid var(--text); text-align: center;
  position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--text); color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent); border-color: var(--accent); color: var(--bg);
  transform: translate(-4px, -4px); box-shadow: 6px 6px 0px var(--border);
}
.btn-outline {
  background: transparent; color: var(--text);
}
.btn-outline:hover {
  background: var(--border);
  transform: translate(-4px, -4px); box-shadow: 6px 6px 0px var(--accent);
}

/* --- ABOUT --- */
.about { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 8vw, 80px); align-items: start; }
.about-visual {
  border: 2px solid var(--border); padding: 16px; background: var(--bg);
  box-shadow: 12px 12px 0px var(--border); transition: all 0.4s var(--ease);
}
.about-visual:hover { transform: translate(-4px, -4px); box-shadow: 16px 16px 0px var(--accent); }
.about-image-wrapper { overflow: hidden; background: #fff;}
.about-image-wrapper img { width: 100%; display: block; filter: grayscale(100%) contrast(1.5); mix-blend-mode: multiply; opacity: 0.8; }

.section-label { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--bg); background: var(--text); padding: 4px 12px; margin-bottom: 32px; display: inline-block; text-transform: uppercase; }
.section-title { font-family: var(--font-display); font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; color: var(--text); margin-bottom: 40px; letter-spacing: -0.04em; line-height: 1; text-transform: uppercase; }

.about-paragraphs p { color: var(--text-dim); font-size: 1.1rem; line-height: 1.7; margin-bottom: 24px; font-weight: 400; }
.about-nickname { font-weight: 600; color: var(--text) !important; border-left: 4px solid var(--accent); padding-left: 20px; font-family: var(--font-display); font-size: 1.25rem; }

/* --- PROJECTS --- */
.projects { background: var(--bg); }
.projects-grid { display: grid; gap: 40px; margin-top: 60px; grid-template-columns: 1fr; }

.project-card {
  background: #000; border: 2px solid var(--border);
  padding: clamp(32px, 5vw, 56px); display: grid; grid-template-columns: auto 1fr auto; gap: 32px 48px; align-items: start;
  transition: all 0.3s var(--ease); position: relative;
}
.project-card:hover {
  border-color: var(--accent); transform: translate(-8px, -8px); box-shadow: 12px 12px 0px var(--accent);
}

.project-number { font-family: var(--font-display); font-size: clamp(3rem, 6vw, 5rem); font-weight: 700; color: var(--text); line-height: 1; -webkit-text-stroke: 1px var(--border); color: transparent; transition: all 0.3s var(--ease); }
.project-card:hover .project-number { -webkit-text-stroke: 1px var(--accent); color: var(--accent); }

.project-image { 
  border: 1px solid var(--border); 
  display: block; 
  background: var(--surface); 
  transition: all 0.3s var(--ease); 
  box-shadow: 4px 4px 0px rgba(0,0,0,1); 
  margin: 16px -16px;
}
.project-image img { 
  width: 100%; 
  display: block; 
  border-bottom: 1px solid var(--border); 
  filter: grayscale(100%); 
  transition: filter 0.3s var(--ease); 
}
.project-card:hover .project-image { 
  box-shadow: 8px 8px 0px var(--accent); 
  transform: translate(-4px, -4px); 
  border-color: var(--accent); 
}
.project-card:hover .project-image img { 
  filter: grayscale(0%); 
}

.project-info { grid-column: 2 / -1; display: flex; flex-direction: column; gap: 16px;}
.project-name { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; color: var(--text); letter-spacing: -0.02em; text-transform: uppercase; }
.project-desc { color: var(--text-dim); font-size: 1.1rem; line-height: 1.6; font-weight: 400; max-width: 800px; }

.project-link {
  display: inline-flex; align-items: center; gap: 12px; color: var(--bg); background: var(--text);
  font-family: var(--font-display); font-size: 1rem; font-weight: 700; padding: 16px 32px;
  text-transform: uppercase; letter-spacing: 0.1em;
  align-self: start; transition: all 0.2s var(--ease); border: 2px solid var(--text);
}
.project-link:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); gap: 16px; }

/* --- SKILLS --- */
.skills { border-top: 1px solid var(--border); background: var(--surface); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; margin-top: 60px; }
.skill-group {
  background: #000; border: 2px solid var(--border); padding: 40px; transition: all 0.3s var(--ease);
}
.skill-group:hover { transform: translate(-6px, -6px); box-shadow: 8px 8px 0px var(--text); border-color: var(--text); }

.skill-icon {
  width: 64px; height: 64px; background: var(--border);
  display: flex; align-items: center; justify-content: center; color: var(--text); margin-bottom: 32px;
}
.skill-group:hover .skill-icon { background: var(--accent); color: var(--bg); }

.skill-title { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--text); margin-bottom: 32px; text-transform: uppercase; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.skill-tags span {
  display: inline-block; padding: 10px 20px; font-family: var(--font-display); font-size: 0.9rem; font-weight: 600; text-transform: uppercase;
  color: var(--text-dim); background: transparent; border: 1px solid var(--border);
}
.skill-group:hover .skill-tags span { border-color: var(--text-dim); color: var(--text); }

/* --- CONTACT --- */
.contact { background: var(--accent); color: var(--bg); padding: clamp(100px, 15vw, 200px) 0; }
.contact .section-label { background: var(--bg); color: var(--accent); margin-bottom: 40px; }
.contact-inner { text-align: left; }
.contact-title { font-family: var(--font-display); font-size: clamp(4rem, 8vw, 7rem); font-weight: 700; color: var(--bg); margin-bottom: 24px; letter-spacing: -0.04em; line-height: 0.95; text-transform: uppercase; }
.contact-desc { color: rgba(0,0,0,0.7); font-size: 1.5rem; line-height: 1.5; font-weight: 500; margin-bottom: 60px; max-width: 700px; font-family: var(--font-display); }

.contact-links { display: flex; gap: 24px; justify-content: flex-start; flex-wrap: wrap; }
.contact .btn-primary { background: var(--bg); color: var(--accent); border-color: var(--bg); }
.contact .btn-primary:hover { background: transparent; color: var(--bg); border-color: var(--bg); box-shadow: none; transform: none;}
.contact .btn-outline { border-color: var(--bg); color: var(--bg); }
.contact .btn-outline:hover { background: var(--bg); color: var(--accent); box-shadow: none; transform: none;}

/* --- FOOTER --- */
.footer { padding: 40px 0; background: var(--bg); border-top: 1px solid var(--border); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; }
.footer-logo { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; letter-spacing: -0.04em; color: var(--text); text-transform: uppercase; }
.footer-copy { font-family: var(--font-display); font-size: 0.9rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; }

/* --- REVEAL ANIMATIONS --- */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* --- MODAL --- */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100dvh;
  background: rgba(0,0,0,0.8); backdrop-filter: blur(4px);
  z-index: 9999; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.3s var(--ease);
}
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal-content {
  background: var(--bg); padding: 48px; border: 1px solid var(--border);
  box-shadow: 12px 12px 0px var(--accent); max-width: 400px; width: 90%; text-align: center;
  transform: translateY(20px); transition: transform 0.3s var(--ease);
}
.modal-overlay.active .modal-content { transform: translateY(0); }
.modal-content p { font-family: var(--font-display); font-size: 1.5rem; color: var(--text); margin-bottom: 32px; font-weight: 700; text-transform: uppercase; letter-spacing: -0.02em; }
.modal-content .btn { width: 100%; }

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: flex; }
  .about-grid { grid-template-columns: 1fr; gap: 60px; }
  .about-visual { max-width: 100%; }
  
  .project-card { grid-template-columns: 1fr; gap: 24px;}
  .project-info { grid-column: 1; }
  .project-number { font-size: 4rem; position: relative; margin-bottom: -10px; }
}

@media (max-width: 600px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; justify-content: center; }
  .contact-links { flex-direction: column; align-items: stretch; }
  .footer-inner { flex-direction: column; gap: 24px; text-align: left; align-items: flex-start;}
}

::selection { background: var(--accent); color: var(--bg); }
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: var(--bg); border-left: 1px solid var(--border); }
::-webkit-scrollbar-thumb { background: var(--border); }
::-webkit-scrollbar-thumb:hover { background: var(--text); }