/* ============================================
   COMPONENT STYLES — Daniel Tsav Portfolio
   ============================================ */

/* ── NAV TOGGLE CHECKBOX ── */
.nav-toggle-cb { display: none; }

/* ── NAV OVERLAY ── */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 298;
    cursor: pointer;
}
.nav-toggle-cb:checked ~ .nav-overlay { display: block; }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-smooth);
  padding: var(--space-3) 0;
}

.navbar.scrolled {
  background: rgba(26, 18, 11, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text-primary);
}

.logo-icon {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent-secondary);
}

.logo-text {
  font-weight: var(--font-weight-bold);
  font-size: var(--text-base);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-tertiary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
  background: var(--glass-bg);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ── HAMBURGER ── */
.navbar-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-3);
  min-width: 48px;
  min-height: 48px;
  touch-action: manipulation;
}
.navbar-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}
.nav-toggle-cb:checked ~ .navbar-actions .navbar-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle-cb:checked ~ .navbar-actions .navbar-toggle span:nth-child(2) {
  opacity: 0;
}
.nav-toggle-cb:checked ~ .navbar-actions .navbar-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MOBILE NAV ── */
.navbar-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border);
  padding: var(--space-20) var(--space-6);
  transition: right var(--transition-spring);
  z-index: var(--z-overlay);
  overflow-y: auto;
}
.nav-toggle-cb:checked ~ .navbar-nav { right: 0; }

.navbar-nav .nav-list {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}
.navbar-nav .nav-link {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-4);
  width: 100%;
}

@media (max-width: 1024px) {
  .navbar-toggle { display: flex; }
}

@media (min-width: 1025px) {
  .navbar-nav {
    position: static;
    width: auto;
    height: auto;
    background: none;
    border: none;
    padding: 0;
    overflow: visible;
  }
  .navbar-nav .nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
  }
  .navbar-nav .nav-link {
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3);
    width: auto;
  }
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

.hero-bg-gradient {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: var(--gradient-glow);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  pointer-events: none;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-greeting {
  margin-bottom: var(--space-6);
}

.hero-name {
  margin-bottom: var(--space-4);
}

.hero-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}

.hero-title-static {
  color: var(--color-text-tertiary);
}

.hero-title-dynamic {
  color: var(--color-highlight);
  min-width: 200px;
}

.hero-cursor {
  color: var(--color-accent-secondary);
  animation: pulse 1s infinite;
  font-weight: var(--font-weight-light);
}

.hero-headline {
  max-width: 560px;
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.hero-socials {
  display: flex;
  gap: var(--space-3);
}

.hero-image-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-frame {
  position: relative;
  width: 320px;
  height: 320px;
  z-index: 1;
}

.hero-profile-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 2;
  border: 3px solid var(--color-border);
  transition: border-color var(--transition-slow);
}

.hero-image-wrap:hover .hero-profile-img {
  border-color: var(--color-accent-secondary);
}

.hero-image-border {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: var(--gradient-border);
  z-index: 0;
  animation: spin 8s linear infinite;
  filter: blur(4px);
  opacity: 0.5;
}

.hero-image-border::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-bg-primary);
}

.hero-scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  margin-top: var(--space-8);
}

.scroll-mouse {
  width: 22px;
  height: 34px;
  border: 2px solid var(--color-text-muted);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 2px;
  animation: float 1.5s ease-in-out infinite;
}

@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-headline { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-image-wrap { order: -1; }
  .hero-image-frame { width: 200px; height: 200px; }
}

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-attributes {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-attribute {
  padding: var(--space-6);
}

.about-attribute h4 {
  color: var(--color-highlight);
  margin-bottom: var(--space-2);
}

.about-interests {
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
}

.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
}

.interest-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.interest-item:hover {
  border-color: var(--color-accent-secondary);
  background: rgba(255, 255, 255, 0.04);
  transform: translateX(4px);
}

.interest-number {
  font-size: var(--text-xs);
  color: var(--color-accent-secondary);
  min-width: 24px;
}

.interest-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .interests-grid { grid-template-columns: 1fr; }
}

/* ── TIMELINE ── */
.timeline {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  padding: var(--space-8) 0;
  width: 50%;
}

.timeline-item:nth-child(even) { margin-left: auto; padding-left: var(--space-10); }
.timeline-item:nth-child(odd) { padding-right: var(--space-10); text-align: right; }

.timeline-item::before {
  content: '';
  position: absolute;
  top: var(--space-12);
  width: 14px;
  height: 14px;
  background: var(--color-accent-secondary);
  border-radius: 50%;
  border: 3px solid var(--color-bg-primary);
  box-shadow: var(--shadow-glow-secondary);
  z-index: 2;
}

.timeline-item:nth-child(odd)::before { right: -8px; }
.timeline-item:nth-child(even)::before { left: -8px; }

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}

.timeline-company { color: var(--color-accent-secondary-light); }
.timeline-role { margin-bottom: var(--space-2); color: var(--color-text-primary); }

.timeline-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.timeline-highlights {
  list-style: none;
  margin-bottom: var(--space-4);
}

.timeline-highlights li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

.timeline-highlights li::before { content: '›'; position: absolute; left: 0; color: var(--color-highlight); font-weight: var(--font-weight-bold); }

.timeline-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.timeline-item:nth-child(odd) .timeline-tags { justify-content: flex-end; }

@media (max-width: 768px) {
  .timeline-line { left: 20px; }
  .timeline-item, .timeline-item:nth-child(even), .timeline-item:nth-child(odd) { width: 100%; margin-left: 0; padding-left: var(--space-12); padding-right: 0; text-align: left; }
  .timeline-item::before, .timeline-item:nth-child(odd)::before, .timeline-item:nth-child(even)::before { left: 13px; right: auto; }
  .timeline-item:nth-child(odd) .timeline-tags { justify-content: flex-start; }
}

/* ── PROJECTS ── */
.project-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2); margin-bottom: var(--space-10); }
.project-card { transition: all var(--transition-slow); }
.project-card.filtered-out { opacity: 0; transform: scale(0.9); pointer-events: none; position: absolute; visibility: hidden; }
.project-card-inner { display: flex; flex-direction: column; height: 100%; }
.project-card-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.project-title { margin-bottom: var(--space-3); }
.project-description { margin-bottom: var(--space-6); flex: 1; }
.project-tech { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: auto; }
.project-featured { border-color: var(--color-border-accent); }

/* ── SKILLS ── */
.skills-grid { max-width: 1100px; margin: 0 auto; }
.skill-category { padding: var(--space-8); }
.skill-category-header { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-6); color: var(--color-highlight); }
.skill-bar-item { margin-bottom: var(--space-4); }
.skill-bar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-2); }
.skill-bar-name { color: var(--color-text-secondary); }
.skill-bar-percent { color: var(--color-accent-secondary); font-size: var(--text-xs); }
.skill-bar-track { width: 100%; height: 6px; background: var(--color-bg-tertiary); border-radius: var(--radius-full); overflow: hidden; }
.skill-bar-fill { height: 100%; background: var(--gradient-hero); border-radius: var(--radius-full); width: 0; transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1); }
.skill-bar-fill.animated { width: var(--skill-level); }
@media (max-width: 768px) { .skills-grid { grid-template-columns: 1fr; } }

/* ── PUBLICATIONS ── */
.publication-card { padding: var(--space-8); display: flex; flex-direction: column; }
.publication-year { align-self: flex-start; margin-bottom: var(--space-4); }
.publication-title { margin-bottom: var(--space-3); }
.publication-authors { margin-bottom: var(--space-2); }
.publication-journal { margin-bottom: var(--space-4); }
.publication-link { margin-top: auto; }

/* ── CERTIFICATIONS ── */
.cert-card { display: flex; gap: var(--space-4); padding: var(--space-6); align-items: flex-start; }
.cert-icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: var(--radius-lg); background: var(--color-highlight-dim); display: flex; align-items: center; justify-content: center; }
.cert-content { flex: 1; }
.cert-title { margin-bottom: var(--space-1); }
.cert-issuer { margin-bottom: var(--space-3); }
.cert-meta { display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap; }

/* ── EDUCATION ── */
.edu-grid { display: flex; flex-direction: column; gap: var(--space-6); max-width: 700px; margin: 0 auto var(--space-16); }
.edu-card { display: flex; gap: var(--space-6); padding: var(--space-6); align-items: center; }
.edu-icon { flex-shrink: 0; width: 60px; height: 60px; border-radius: var(--radius-lg); background: var(--color-highlight-dim); display: flex; align-items: center; justify-content: center; }
.edu-content { flex: 1; }
.edu-school { margin-bottom: var(--space-2); }
.membership-section { padding-top: var(--space-12); border-top: 1px solid var(--color-border); }
.membership-card { padding: var(--space-6); text-align: center; }

/* ── CONTACT ── */
.contact-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: var(--space-10); max-width: 1000px; margin: 0 auto; }
.contact-info-card { padding: var(--space-8); }
.contact-details { display: flex; flex-direction: column; gap: var(--space-6); margin-top: var(--space-6); }
.contact-item { display: flex; gap: var(--space-4); align-items: center; }
.contact-item-icon { flex-shrink: 0; width: 44px; height: 44px; border-radius: var(--radius-lg); background: var(--color-highlight-dim); display: flex; align-items: center; justify-content: center; }
.contact-link { display: block; color: var(--color-text-secondary); }
.contact-link:hover { color: var(--color-highlight); }
.contact-form { padding: var(--space-8); }
.form-feedback { margin-bottom: var(--space-4); }
.form-error { font-size: var(--text-sm); color: var(--color-error); padding: var(--space-2) var(--space-3); background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.25); border-radius: var(--radius-md); }
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }

/* ── FOOTER ── */
.footer { padding: var(--space-16) 0 var(--space-8); }
.footer-content { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-8); align-items: center; margin: var(--space-10) 0 var(--space-8); }
.footer-logo { display: flex; align-items: center; gap: var(--space-2); }
.footer-logo .logo-text { font-size: var(--text-lg); }
.footer-links { display: flex; gap: var(--space-6); }
.footer-links a { color: var(--color-text-tertiary); }
.footer-links a:hover { color: var(--color-text-primary); }
.footer-right { display: flex; justify-content: flex-end; }
.footer-socials { display: flex; gap: var(--space-2); }
.footer-bottom { text-align: center; padding-top: var(--space-6); border-top: 1px solid var(--color-border); }
@media (max-width: 768px) {
  .footer-content { grid-template-columns: 1fr; justify-items: center; text-align: center; gap: var(--space-6); }
  .footer-right { justify-content: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}