/* ============================================================
   Portfolio – Raul Pellizzer
   Design: Dark Professional Theme
   ============================================================ */

/* Fonts loaded via <link> in head.php for better performance */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-base:       #0b0f1a;
  --bg-surface:    #111827;
  --bg-card:       #1a2236;
  --bg-card-hover: #1f2b42;
  --border:        #1e293b;
  --border-light:  #2d3a52;
  --accent:        #38bdf8;
  --accent-2:      #818cf8;
  --accent-grad:   linear-gradient(135deg, #38bdf8, #818cf8);
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #7a95ad; /* lightened for WCAG AA contrast on dark bg */
  --success:       #34d399;
  --radius:        12px;
  --radius-sm:     8px;
  --shadow:        0 4px 24px rgba(0,0,0,.4);
  --shadow-lg:     0 8px 48px rgba(0,0,0,.6);
  --transition:    .25s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #7dd3fc; }

/* ── Utility ───────────────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section    { padding: 96px 0; }
.section-alt { background: var(--bg-surface); }
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(56,189,248,.1);
  color: var(--accent);
  border: 1px solid rgba(56,189,248,.2);
  border-radius: 999px;
  font-size: .75rem; font-weight: 600;
  padding: 4px 12px;
  letter-spacing: .04em;
}
.gradient-text {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: block; width: 24px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800; line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 56px;
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(11,15,26,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav__logo {
  font-size: 1.1rem; font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.01em;
}
.nav__links {
  display: flex; align-items: center; gap: 32px;
  list-style: none;
}
.nav__links a {
  font-size: .875rem; font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--text-primary); }
.nav__cta {
  font-size: .875rem; font-weight: 600;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(56,189,248,.12);
  border: 1px solid rgba(56,189,248,.3);
  color: var(--accent) !important;
  transition: background var(--transition), border-color var(--transition);
}
.nav__cta:hover {
  background: rgba(56,189,248,.2) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}
.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px;
}
.nav__hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-secondary); border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 20%, rgba(56,189,248,.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(129,140,248,.06) 0%, transparent 60%);
  pointer-events: none;
}
.hero__grid {
  display: grid; grid-template-columns: 1fr auto;
  align-items: center; gap: 48px;
}
.hero__eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 20px;
}
.hero__eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(52,211,153,.2);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 3px rgba(52,211,153,.2); }
  50%      { box-shadow: 0 0 0 6px rgba(52,211,153,.1); }
}
.hero__eyebrow span { font-size: .85rem; color: var(--text-secondary); font-weight: 500; }
.hero__name {
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 800; line-height: 1.05;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}
.hero__title {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  font-weight: 400; margin-bottom: 24px;
}
.hero__title strong { color: var(--accent); font-weight: 600; }
.hero__bio {
  font-size: 1rem; color: var(--text-secondary);
  max-width: 520px; line-height: 1.75;
  margin-bottom: 36px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 48px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  border-radius: 999px; font-weight: 600; font-size: .9rem;
  transition: all var(--transition); cursor: pointer; border: none;
}
.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 4px 24px rgba(56,189,248,.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(56,189,248,.4);
  color: #fff;
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.hero__stats {
  display: flex; gap: 40px; flex-wrap: wrap;
}
.hero__stat-value {
  font-size: 2rem; font-weight: 800;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.hero__stat-label { font-size: .8rem; color: var(--text-muted); font-weight: 500; margin-top: 4px; }
.hero__avatar-wrap {
  position: relative;
}
.hero__avatar {
  width: 220px; height: 220px;
  border-radius: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero__avatar-ring {
  position: absolute; inset: -2px;
  border-radius: 30px;
  background: var(--accent-grad);
  z-index: -1;
  opacity: .5;
}

/* ── About ─────────────────────────────────────────────────── */
.about__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: start;
}
.about__text p {
  color: var(--text-secondary); line-height: 1.8;
  margin-bottom: 16px;
}
.about__highlights {
  display: flex; flex-direction: column; gap: 16px;
  margin-top: 32px;
}
.about__highlight {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}
.about__highlight:hover { border-color: var(--border-light); }
.about__highlight-icon {
  font-size: 1.4rem; flex-shrink: 0; margin-top: 2px;
}
.about__highlight-title { font-weight: 600; font-size: .9rem; margin-bottom: 3px; }
.about__highlight-desc  { font-size: .825rem; color: var(--text-muted); }

/* ── Education ─────────────────────────────────────────────── */
.education__list {
  display: flex; flex-wrap: wrap; gap: 16px;
  margin-top: 20px;
}
.education__item {
  display: flex; align-items: flex-start; gap: 16px;
  flex: 1 1 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color var(--transition);
}
.education__item:hover { border-color: var(--border-light); }
.education__icon { font-size: 1.6rem; flex-shrink: 0; margin-top: 2px; }
.education__degree {
  font-weight: 700; font-size: .95rem;
  color: var(--text-primary); margin-bottom: 4px;
}
.education__institution {
  font-size: .825rem; color: var(--text-secondary); margin-bottom: 10px;
}
.education__meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.education__badge {
  font-size: .7rem; font-weight: 700;
  padding: 3px 10px; border-radius: 999px;
  letter-spacing: .04em; text-transform: uppercase;
}
.education__badge--done {
  background: rgba(52,211,153,.12);
  border: 1px solid rgba(52,211,153,.25);
  color: #34d399;
}
.education__badge--ongoing {
  background: rgba(56,189,248,.12);
  border: 1px solid rgba(56,189,248,.25);
  color: var(--accent);
}
.education__year {
  font-size: .75rem; color: var(--text-muted); font-weight: 500;
}

/* ── Skills ────────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition);
}
.skill-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}
.skill-card__icon { font-size: 2rem; margin-bottom: 14px; }
.skill-card__title {
  font-size: 1rem; font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tag {
  font-size: .75rem; font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-family: 'Fira Code', monospace;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.skill-tag:hover {
  background: rgba(56,189,248,.1);
  border-color: rgba(56,189,248,.3);
  color: var(--accent);
}

/* ── Projects ──────────────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  text-decoration: none; color: inherit;
}
.project-card:hover {
  border-color: rgba(56,189,248,.4);
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(56,189,248,.1);
  color: inherit;
}
.project-card__thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-surface);
}
.project-card__thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s ease;
}
.project-card:hover .project-card__thumb img { transform: scale(1.05); }
.project-card__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,15,26,.7) 0%, transparent 60%);
}
.project-card__badge {
  position: absolute; top: 14px; right: 14px;
}
.project-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.project-card__title {
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 8px;
}
.project-card__desc {
  font-size: .875rem; color: var(--text-secondary);
  line-height: 1.65; flex: 1;
  margin-bottom: 20px;
}
.project-card__meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 20px;
}
.project-card__tag {
  font-size: .7rem; font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(129,140,248,.12);
  border: 1px solid rgba(129,140,248,.2);
  color: #a5b4fc;
  font-family: 'Fira Code', monospace;
}
.project-card__footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.project-card__link {
  font-size: .85rem; font-weight: 600; color: var(--accent);
  display: flex; align-items: center; gap: 6px;
  transition: gap var(--transition);
}
.project-card:hover .project-card__link { gap: 10px; }
.project-card__arrow { font-size: 1rem; }

/* ── Social / Connect ──────────────────────────────────────── */
.connect__grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.connect-card {
  display: flex; align-items: center; gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color var(--transition), transform var(--transition);
  text-decoration: none; color: inherit;
}
.connect-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  color: inherit;
}
.connect-card__icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; flex-shrink: 0;
}
.connect-card__icon.github  { background: rgba(255,255,255,.08); }
.connect-card__icon.linkedin { background: rgba(10,102,194,.15); }
.connect-card__title { font-weight: 700; font-size: .95rem; margin-bottom: 3px; }
.connect-card__handle { font-size: .825rem; color: var(--text-muted); }

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: .825rem;
}
.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--accent); }

/* ── Project Detail Page ───────────────────────────────────── */
.project-hero {
  padding: 120px 0 72px;
  position: relative;
  overflow: hidden;
}
.project-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(56,189,248,.07) 0%, transparent 70%);
  pointer-events: none;
}
.project-hero__back {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .85rem; font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 36px;
  transition: color var(--transition);
}
.project-hero__back:hover { color: var(--accent); }
.project-hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800; letter-spacing: -.02em;
  margin-bottom: 16px;
}
.project-hero__subtitle {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 640px; line-height: 1.7;
  margin-bottom: 32px;
}
.project-hero__tags { display: flex; flex-wrap: wrap; gap: 10px; }

.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin: 40px 0;
  font-family: 'Fira Code', monospace;
  font-size: .8rem;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: pre;
  line-height: 1.7;
}

.features-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px; margin-top: 32px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-card__icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card__title { font-weight: 700; margin-bottom: 8px; }
.feature-card__desc { font-size: .875rem; color: var(--text-secondary); line-height: 1.65; }

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px; margin-top: 32px;
}
.screenshot-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  transition: border-color var(--transition), transform var(--transition);
}
.screenshot-item:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}
.screenshot-item img {
  width: 100%; height: 220px; object-fit: cover;
  transition: transform .4s ease;
}
.screenshot-item:hover img { transform: scale(1.03); }
.screenshot-item__caption {
  padding: 12px 16px;
  font-size: .8rem; color: var(--text-muted); font-weight: 500;
}

.tech-table {
  width: 100%; border-collapse: collapse; margin-top: 24px;
}
.tech-table th, .tech-table td {
  padding: 12px 16px; text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: .875rem;
}
.tech-table th {
  color: var(--text-muted); font-weight: 600;
  font-size: .75rem; text-transform: uppercase; letter-spacing: .06em;
  background: var(--bg-card);
}
.tech-table td { color: var(--text-secondary); }
.tech-table td:first-child { color: var(--text-primary); font-weight: 600; }
.tech-table tr:last-child td { border-bottom: none; }

.stat-cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px; margin-top: 32px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.stat-card__value {
  font-size: 1.8rem; font-weight: 800;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-card__label { font-size: .75rem; color: var(--text-muted); margin-top: 6px; }

/* ── Skip to content ───────────────────────────────────────── */
.skip-link {
  position: absolute; top: -100%; left: 8px;
  background: var(--accent); color: #0b0f1a;
  padding: 8px 20px; border-radius: var(--radius-sm);
  font-weight: 700; font-size: .875rem; z-index: 9999;
  text-decoration: none; transition: top .15s ease;
}
.skip-link:focus { top: 8px; outline: 2px solid #fff; outline-offset: 2px; }

/* ── Focus indicators ──────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Screen-reader only ────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Scroll reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Reduced motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__avatar-wrap { display: none; }
  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .nav__links { display: none; }
  .nav__links.open {
    display: flex; flex-direction: column;
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px; gap: 20px;
  }
  .nav__hamburger { display: flex; }
  .section { padding: 64px 0; }
  .hero__stats { gap: 24px; }
}
@media (max-width: 480px) {
  .screenshot-grid { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
}