/* ================================================================
   Bruno Exler · Portfolio · style.css
   No-scroll viewport layout · Fixed skill panel
   ================================================================ */

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:          #111827;
  --bg-dark:     #0a0a0a;
  --bg-card:     #1f2937;
  --bg-card-hover:#243044;
  --border:      #374151;
  --text:        #e5e7eb;
  --text-muted:  #9ca3af;
  --text-faint:  #6b7280;
  --accent:      #3b82f6;
  --accent-dim:  rgba(59, 130, 246, 0.12);
  --font-sans:   'Inter', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Courier New', monospace;
  --radius:      0.75rem;
  --radius-sm:   0.375rem;
  --sidebar-w:   280px;
  --main-px:     2.5rem;
  --transition:  0.2s ease;
}

html, body {
  height: 100%;
  overflow: hidden; /* verhindert Body-Scroll; Main scrollt eigenständig */
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ── Two-pane layout ────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────────────── */
.sidebar {
  height: 100vh;
  overflow: hidden;           /* no sidebar scrollbar */
  background: var(--bg-dark);
  border-right: 1px solid var(--border);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 2rem 1.5rem;
  gap: 1.4rem;
}

.sidebar-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.sidebar-name {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.sidebar-sub {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-faint);
  line-height: 1.5;
}

.sidebar-bio {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* AI Note */
.ai-note {
  border-left: 2px solid var(--border);
  padding-left: 0.85rem;
}

.ai-note-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.ai-note p {
  font-size: 0.77rem;
  color: var(--text-faint);
  line-height: 1.5;
}

/* Contact */
.sidebar-contact {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-contact a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.75rem;
  color: var(--text-faint);
  transition: color var(--transition);
  overflow: hidden;
}

.sidebar-contact a i {
  color: var(--accent);
  font-size: 0.8rem;
  width: 1rem;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-contact a span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-contact a:hover { color: var(--text); }

.sidebar-footer {
  font-size: 0.68rem;
  color: var(--text-faint);
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

/* ── Main Content ───────────────────────────────────────────────── */
.main {
  height: 100vh;
  overflow-y: auto;           /* nur rechts scrollbar, kein zweiter Scrollbalken */
  display: flex;
  flex-direction: column;
  padding: 2rem var(--main-px) 3rem;
  gap: 1.75rem;
}

/* ── Sections ───────────────────────────────────────────────────── */
.section { display: flex; flex-direction: column; }

#projects {
  flex-shrink: 0;
}

#stack {
  flex-shrink: 0;
}

.section-heading {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-bottom: 1rem;
}

/* ── Project Cards ──────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  align-items: start;
  flex: 1;
  min-height: 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-icon {
  width: 30px;
  height: 30px;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.8rem;
}

.card-github {
  color: var(--text-faint);
  font-size: 1rem;
  transition: color var(--transition);
}
.card-github:hover { color: var(--text); }

.card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.card-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: auto;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  background: rgba(59,130,246,0.1);
  color: var(--accent);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-sm);
  padding: 0.1rem 0.45rem;
  white-space: nowrap;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  transition: gap var(--transition);
}
.card-link:hover { gap: 0.5rem; }
.card-link i { font-size: 0.65rem; }

/* ── Skill Tags ─────────────────────────────────────────────────── */
.skills-groups {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.skills-group-label {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  margin-bottom: 0.45rem;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

button.skill-tag {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  line-height: inherit;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

button.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

button.skill-tag.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* Speech bubble on "C" */
.skill-tag--hint { position: relative; }

.skill-tag--hint::before {
  content: '';
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--accent);
  z-index: 11;
  pointer-events: none;
  animation: hint-bob 2s ease-in-out infinite;
}

.skill-tag--hint::after {
  content: 'click me';
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 20px;
  white-space: nowrap;
  z-index: 11;
  pointer-events: none;
  animation: hint-bob 2s ease-in-out infinite;
  box-shadow: 0 2px 10px rgba(59,130,246,0.35);
}

@keyframes hint-bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(-4px); }
}

#skills-groups.interacted .skill-tag--hint::before,
#skills-groups.interacted .skill-tag--hint::after {
  display: none;
}

.skills-group:first-child .skills-tags {
  padding-top: 2rem;
  overflow: visible;
}
.skills-group { overflow: visible; }

/* ── Skill Detail Panel — fixed overlay, never causes scroll ─────── */
/*
   position: fixed → lebt außerhalb des normalen Layouts,
   verschiebt nichts, löst keinen Scroll aus, passt sich
   automatisch an beliebige Textlänge an.
*/
.skill-detail {
  position: fixed;
  bottom: 1.75rem;
  left: calc(var(--sidebar-w) + var(--main-px));
  right: var(--main-px);
  z-index: 200;

  /* Hidden state */
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  visibility: hidden;
  transition:
    opacity   0.28s ease,
    transform 0.28s ease,
    visibility 0s linear 0.28s;
}

.skill-detail.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  visibility: visible;
  transition:
    opacity   0.28s ease,
    transform 0.28s ease,
    visibility 0s linear 0s;
}

/* .skill-detail-inner is just a passthrough wrapper now */
.skill-detail-inner { }

.skill-detail-box {
  background: #1a2436;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem 1.25rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.45);
  opacity: 1;
  transition: opacity 0.15s ease;
}

.skill-detail-box.fading { opacity: 0; }

.skill-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.55rem;
}

.skill-detail-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--accent);
}

.skill-detail-close {
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 3px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}
.skill-detail-close:hover {
  color: var(--text);
  background: var(--border);
}

.skill-detail-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.65;
}

/* ── Background-Overlay beim offenen Panel ──────────────────────── */
/*
   pointer-events: none immer — fängt keine Klicks ab,
   dient nur zum visuellen Abdimmen.
   Klick-außen-Logik läuft über document-Listener in script.js.
*/
.panel-overlay {
  position: fixed;
  inset: 0;
  z-index: 199;           /* direkt unter dem Panel (z-index: 200) */
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;   /* lässt alle Klicks durch */
  transition: opacity 0.28s ease;
}

.panel-overlay.visible {
  opacity: 1;
}

/* ── Responsive ─────────────────────────────────────────────────── */

/* Medium screens — narrower sidebar */
@media (max-width: 1100px) {
  :root {
    --sidebar-w: 240px;
    --main-px:   2rem;
  }
  .sidebar-name { font-size: 1.65rem; }
}

/* Mobile — sidebar becomes compact top bar */
@media (max-width: 768px) {
  html, body { overflow: hidden; } /* still no scroll */

  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .sidebar {
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar-inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    height: auto;
    padding: 0.9rem 1.25rem;
    gap: 0.6rem 1.25rem;
  }

  .sidebar-top { flex: 1; min-width: 0; }
  .sidebar-name { font-size: 1.3rem; }
  .sidebar-eyebrow { display: none; }
  .sidebar-sub { font-size: 0.7rem; margin-top: 0.15rem; }

  .sidebar-bio { display: none; }
  .ai-note { display: none; }

  /* Contact inline icons only */
  .sidebar-contact {
    flex-direction: row;
    gap: 0.85rem;
    margin-top: 0;
  }
  .sidebar-contact a span { display: none; }
  .sidebar-contact a i { font-size: 1rem; width: auto; }

  .sidebar-footer { display: none; }

  /* Main fills remaining viewport height */
  .main {
    height: auto;
    flex: 1;
    padding: 1.25rem;
    gap: 1.25rem;
    overflow: hidden;
  }

  /* 2 columns on mobile, compact cards */
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem;
  }

  .card-desc { display: none; }

  /* Skill panel full-width on mobile */
  .skill-detail {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

/* Very small screens — single column */
@media (max-width: 480px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* ── Focus & Selection ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

::selection {
  background: rgba(59, 130, 246, 0.25);
  color: var(--text);
}