/* Lars Schlich – Portfolio · Combined SI + AE
   assets/css/style.css */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  --bg:          #181b22;
  --surface:     #1f2330;
  --card:        #252a38;
  --border:      rgba(255,255,255,0.07);
  --border-hi:   rgba(255,255,255,0.12);
  --accent:      #fb923c;
  --accent-rgb:  251,146,60;
  --green:       #86efac;
  --text:        #f0f2f8;
  --text-dim:    #c8cde0;
  --muted:       #9ba5c0;
  --subtle:      #606880;
  --radius:      14px;
  --radius-sm:   8px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    system-ui, -apple-system, sans-serif;
  --font-mono:    'Courier New', monospace;
  --transition:   0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--subtle); border-radius: 2px; }

/* ─── MODE TRANSITION ──────────────────────────────────────────── */
.mode-content {
  transition: opacity 0.22s ease, transform 0.22s ease;
}
.mode-content.switching {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}

/* ─── NAV ──────────────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(24,27,34,0.9);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--border);
  padding: 0 48px; height: 58px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.nav-left { display: flex; align-items: center; gap: 20px; }
.nav-logo-img {
  display: flex; align-items: center; text-decoration: none; flex-shrink: 0;
  transition: filter var(--transition);
}
.nav-logo-img:hover {
  filter: drop-shadow(0 0 5px rgba(255,255,255,0.6))
  drop-shadow(0 0 12px rgba(255,255,255,0.25));
}
.logo-img { height: 26px; width: auto; display: block; }

/* Mode toggle pill */
.mode-toggle {
  display: flex; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px;
  gap: 2px;
}
.mode-btn {
  font-family: var(--font-display);
  font-size: 11px; font-weight: 600; letter-spacing: 0.04em;
  padding: 5px 12px; border-radius: 16px; border: none;
  cursor: pointer; transition: all 0.2s;
  color: var(--muted); background: transparent;
}
.mode-btn.active {
  background: rgba(var(--accent-rgb), 0.15);
  color: var(--accent);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.3);
}
.mode-btn:hover:not(.active) { color: var(--text); }

.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-size: 13px; color: var(--muted); text-decoration: none;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.mail-btn {
  background: rgba(var(--accent-rgb), 1);
  color: #0f0800;
  font-size: 13px; font-weight: 600;
  padding: 7px 16px; border-radius: var(--radius-sm);
  text-decoration: none;
  display: flex; align-items: center; gap: 6px;
  transition: opacity var(--transition), transform var(--transition), background 0.3s;
}
.mail-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.mail-btn svg { width: 13px; height: 13px; }

/* ─── HERO ─────────────────────────────────────────────────────── */
.hero {
  padding: 100px 48px 80px;
  max-width: 820px;
  position: relative;
}

/* Ambient glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: -100px;
  width: 600px; height: 400px;
  background: radial-gradient(ellipse at 30% 40%,
  rgba(var(--accent-rgb), 0.07) 0%,
  transparent 65%);
  pointer-events: none;
  transition: background 0.5s ease;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid rgba(var(--accent-rgb), 0.18);
  color: var(--muted); font-size: 12px; font-family: var(--font-mono);
  padding: 5px 13px; border-radius: 20px; margin-bottom: 32px;
  transition: border-color 0.4s;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; background: var(--green);
  border-radius: 50%; animation: pulse 2.5s infinite;
  flex-shrink: 0;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: 58px; font-weight: 700; line-height: 1.08;
  letter-spacing: -0.035em; color: #fff; margin-bottom: 22px;
}
.hero-headline .line { display: block; }
.hero-headline .line.accent-line { color: var(--accent); transition: color 0.4s; }

/* Stagger animation */
.hero-headline .line:nth-child(1) { animation: slideUp 0.5s 0.05s both; }
.hero-headline .line:nth-child(2) { animation: slideUp 0.5s 0.12s both; }
.hero-headline .line:nth-child(3) { animation: slideUp 0.5s 0.19s both; }

.hero-sub {
  font-size: 15px; color: var(--muted); max-width: 500px;
  line-height: 1.8; margin-bottom: 36px;
  animation: slideUp 0.5s 0.28s both;
}
.hero-btns { display: flex; gap: 10px; animation: slideUp 0.5s 0.34s both; }
.btn-primary {
  background: var(--text); color: #111;
  font-size: 13px; font-weight: 600;
  padding: 10px 20px; border-radius: var(--radius-sm); text-decoration: none;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--muted);
  font-size: 13px; font-weight: 500;
  padding: 10px 20px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); text-decoration: none;
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.btn-ghost:hover { border-color: var(--border-hi); color: var(--text); transform: translateY(-1px); }

/* ─── SECTIONS ─────────────────────────────────────────────────── */
section {
  padding: 72px 48px;
  border-top: 1px solid var(--border);
}
.section-label {
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 400; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--subtle); margin-bottom: 36px;
}

/* Scroll reveal */
.reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(2) { transition-delay: 0.06s; }
.reveal:nth-child(3) { transition-delay: 0.12s; }
.reveal:nth-child(4) { transition-delay: 0.18s; }

/* ─── SKILLS ───────────────────────────────────────────────────── */
.skills-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); font-size: 13px;
  padding: 7px 13px; border-radius: var(--radius-sm);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  cursor: default;
}
.skill-chip:hover {
  border-color: rgba(var(--accent-rgb), 0.3);
  background: var(--card); transform: translateY(-2px);
}
.skill-chip i { font-size: 18px; line-height: 1; }
.icon-text {
  width: 18px; height: 18px; display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; background: rgba(var(--accent-rgb),0.1);
  color: var(--accent); border-radius: 4px; flex-shrink: 0;
  font-family: var(--font-mono); transition: background 0.3s, color 0.3s;
}

/* ─── PROJECT SLIDER ───────────────────────────────────────────── */
.slider-wrapper { position: relative; }
.slider-track-outer { overflow: hidden; border-radius: var(--radius); }
.slider-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25,0.46,0.45,0.94);
  will-change: transform;
}
.slide { min-width: 100%; padding: 1px; }

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px;
  display: grid; grid-template-columns: 1fr auto;
  grid-template-rows: auto auto 1fr auto;
  min-height: 248px; position: relative; overflow: hidden;
  transition: border-color 0.25s;
}
.project-card:hover { border-color: rgba(var(--accent-rgb), 0.2); }
.project-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 55%, rgba(var(--accent-rgb), 0.03) 100%);
  pointer-events: none;
  transition: background 0.4s;
}

.card-icon-badge {
  grid-column: 1; grid-row: 1; align-self: start;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  padding: 3px 8px; border-radius: 4px;
  margin-bottom: 16px;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.card-counter {
  grid-column: 2; grid-row: 1;
  font-family: var(--font-mono);
  font-size: 11px; color: var(--subtle); padding-top: 3px;
}
.card-title {
  grid-column: 1 / -1;
  font-family: var(--font-display);
  font-size: 19px; font-weight: 600; color: #fff; margin-bottom: 10px;
  letter-spacing: -0.015em;
}
.card-short {
  grid-column: 1 / -1;
  font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 22px;
}
.card-bottom {
  grid-column: 1 / -1;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.card-tag {
  font-family: var(--font-mono);
  font-size: 10px; background: var(--bg); border: 1px solid var(--border);
  color: var(--muted); padding: 3px 8px; border-radius: 4px;
}
.card-tag.hi {
  border-color: rgba(var(--accent-rgb), 0.35);
  color: var(--accent); background: rgba(var(--accent-rgb), 0.07);
  transition: border-color 0.3s, color 0.3s, background 0.3s;
}
.card-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.details-btn {
  background: transparent; border: 1px solid var(--border);
  color: var(--muted); font-size: 12px; font-weight: 500;
  padding: 7px 14px; border-radius: var(--radius-sm); cursor: pointer;
  display: flex; align-items: center; gap: 5px;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  white-space: nowrap; font-family: var(--font-body);
}
.details-btn:hover {
  border-color: rgba(var(--accent-rgb), 0.4);
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.06);
}
.details-btn svg { width: 11px; height: 11px; }
.github-btn {
  background: transparent; border: 1px solid var(--border);
  color: var(--muted); font-size: 12px; font-weight: 500;
  padding: 7px 13px; border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: 5px;
  text-decoration: none; white-space: nowrap;
  transition: border-color var(--transition), color var(--transition);
}
.github-btn:hover { border-color: var(--border-hi); color: var(--text); }
.github-btn svg { width: 13px; height: 13px; }

/* Slider controls */
.slider-controls {
  display: flex; align-items: center; justify-content: center;
  margin-top: 16px; gap: 14px;
}
.slider-arrows-left, .slider-arrows-right { display: flex; }
.arrow-btn {
  width: 34px; height: 34px; background: transparent; border: none;
  color: rgba(255,255,255,0.2); font-size: 22px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: color var(--transition), transform 0.1s;
  user-select: none; line-height: 1;
}
.arrow-btn:hover { color: rgba(255,255,255,0.65); }
.arrow-btn:active { transform: scale(0.88); }
.arrow-btn:disabled { opacity: 0.12; cursor: default; }
.slider-dots { display: flex; gap: 6px; align-items: center; }
.dot-btn {
  width: 5px; height: 5px; border-radius: 50%;
  background: rgba(255,255,255,0.15); border: none; cursor: pointer;
  transition: background 0.25s, width 0.25s; padding: 0;
}
.dot-btn.active {
  background: rgba(var(--accent-rgb), 0.6);
  width: 16px; border-radius: 3px;
  transition: background 0.3s, width 0.25s;
}

/* ─── MODAL ────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(8,10,16,0.85); backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.22s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: 18px; padding: 38px;
  max-width: 660px; width: 100%; max-height: 87vh; overflow-y: auto;
  transform: scale(0.96) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.25,0.46,0.45,0.94);
  position: relative;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-close {
  position: absolute; top: 18px; right: 18px;
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--card); border: 1px solid var(--border);
  color: var(--muted); font-size: 14px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: color var(--transition), border-color var(--transition);
}
.modal-close:hover { color: var(--text); border-color: var(--border-hi); }
.modal-badge {
  display: inline-block; font-family: var(--font-mono);
  font-size: 10px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--accent); background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.25);
  padding: 4px 10px; border-radius: 4px; margin-bottom: 14px;
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}
.modal-title {
  font-family: var(--font-display);
  font-size: 23px; font-weight: 700; color: #fff;
  letter-spacing: -0.02em; margin-bottom: 6px;
}
.modal-subtitle { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.modal-section-title {
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 400; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--subtle);
  margin-bottom: 8px; margin-top: 22px;
}
.modal-text { font-size: 14px; color: var(--text-dim); line-height: 1.78; }
.modal-link {
  font-size: 13px; color: var(--accent); text-decoration: none;
  transition: color var(--transition);
}
.modal-link:hover { opacity: 0.8; }
.modal-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.modal-tag {
  font-family: var(--font-mono);
  font-size: 11px; background: var(--card); border: 1px solid var(--border);
  color: var(--muted); padding: 4px 10px; border-radius: 5px;
}
.modal-tag.hi {
  border-color: rgba(var(--accent-rgb), 0.3);
  color: var(--accent); background: rgba(var(--accent-rgb), 0.07);
  transition: all 0.3s;
}
.modal::-webkit-scrollbar { width: 4px; }
.modal::-webkit-scrollbar-thumb { background: var(--subtle); border-radius: 2px; }

/* ─── HINTERGRUND ──────────────────────────────────────────────── */
.bg-grid { display: flex; flex-direction: column; gap: 10px; }
.bg-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  display: grid; grid-template-columns: auto 1fr;
  gap: 0 18px; align-items: start;
  transition: border-color var(--transition);
}
.bg-item:hover { border-color: var(--subtle); }
.bg-icon-badge {
  font-family: var(--font-mono);
  font-size: 8px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--muted); background: var(--card);
  border: 1px solid var(--border);
  padding: 3px 6px; border-radius: 3px; margin-top: 3px; white-space: nowrap;
}
.bg-meta { font-family: var(--font-mono); font-size: 11px; color: var(--subtle); margin-bottom: 4px; }
.bg-title {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.bg-desc { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ─── FOOTER ────────────────────────────────────────────────────── */
footer { padding: 36px 48px; border-top: 1px solid var(--border); }
.footer-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer-logo-img {
  display: flex; align-items: center; text-decoration: none;
  opacity: 0.55; transition: filter var(--transition), opacity var(--transition);
}
.footer-logo-img:hover {
  opacity: 1;
  filter: drop-shadow(0 0 5px rgba(255,255,255,0.55))
  drop-shadow(0 0 12px rgba(255,255,255,0.2));
}
.logo-img-footer { height: 20px; width: auto; display: block; }
.footer-links { display: flex; align-items: center; gap: 10px; }
.footer-links a { font-size: 13px; color: var(--muted); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-links .sep { font-size: 13px; color: var(--subtle); }
.footer-copy { font-family: var(--font-mono); font-size: 11px; color: var(--subtle); }

/* ─── ANIMATIONS ────────────────────────────────────────────────── */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.85); }
}

/* ─── RESPONSIVE ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 0 20px; }
  .nav-links { display: none; }
  .hero { padding: 64px 20px 56px; }
  .hero-headline { font-size: 38px; }
  section { padding: 52px 20px; }
  footer { padding: 28px 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .modal { padding: 24px; border-radius: 14px; }
  .card-actions { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}