/* ================================================================
   PORTFOLIO — Dark Theme
   Matching the layout from the reference screenshot:
   horizontal tab nav · text-left / photo-right · dark bg
   ================================================================ */

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

:root {
  --bg:           #242424;
  --bg-surface:   #1c1c1c;
  --bg-card:      #2d2d2d;
  --border:       rgba(235,235,235,0.07);
  --accent:       #ebebeb;
  --accent-dim:   rgba(235,235,235,0.6);
  --accent-muted: rgba(235,235,235,0.12);
  --tab-active:   #ebebeb;
  --tab-inactive: rgba(235,235,235,0.6);
  --tag-bg:       rgba(235,235,235,0.08);
  --tag-border:   rgba(235,235,235,0.13);
  --green:        #4ade80;
  --photo-bg:     #213721;   /* dark green behind photo like in reference */
  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --font-main:    'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Nav / Tabs ───────────────────────────────────────────────── */
.main-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 40px;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  color: var(--tab-inactive);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 18px 22px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  position: relative;
}

.tab-btn:hover {
  color: var(--accent);
}

.tab-btn.active {
  color: var(--tab-active);
  border-bottom-color: var(--tab-active);
  font-weight: 600;
}

/* ── Content Area ─────────────────────────────────────────────── */
.content-area {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tab-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  scroll-margin-top: 58px; /* Offset for sticky header */
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 40px;
  flex: 1;
}

/* ── Section Heading ──────────────────────────────────────────── */
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  line-height: 1.1;
  color: var(--accent);
}

/* ================================================================
   PERSONAL PRESENTATION
   ================================================================ */
.presentation-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 58px);
  padding-top: 60px;
  padding-bottom: 60px;
}

.presentation-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.greeting {
  font-size: 1rem;
  color: var(--accent-dim);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.big-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.big-role {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--accent-dim);
  margin-bottom: 28px;
}

.presentation-bio {
  max-width: 640px;
  color: var(--accent-dim);
  line-height: 1.75;
  margin: 0 auto 32px auto;
  text-align: center;
}

.presentation-socials {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 32px;
}

.icon-link {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--accent-dim);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.icon-link:hover {
  color: var(--accent);
  border-color: rgba(235,235,235,0.35);
  background: var(--accent-muted);
}

/* ── Shared: btn-primary ──────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: none;
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
}
.btn-primary:hover { background: #ddd; transform: translateY(-1px); }

/* ================================================================
   ABOUT ME
   ================================================================ */
.about-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: flex-start;
  min-height: calc(100vh - 57px);
}

.about-text {
  padding-top: 20px;
}

.about-body {
  color: rgba(255,255,255,0.7);
  font-size: 14.5px;
  line-height: 1.8;
  text-align: justify;
  max-width: 500px;
  margin-bottom: 32px;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 36px;
}

.detail-row {
  display: flex;
  gap: 14px;
  font-size: 14px;
}

.detail-label {
  color: var(--accent-dim);
  min-width: 85px;
  font-weight: 500;
}

.detail-value {
  color: var(--accent);
}

.detail-value.available {
  color: var(--green);
  font-weight: 600;
}

/* ── Photo frame (shared) ─────────────────────────────────────── */
.about-photo,
.presentation-photo {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20px;
}

.photo-frame {
  width: 340px;
  height: 440px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--photo-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* Photo — swap the placeholder for a real <img> when ready */
.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.photo-placeholder.initials-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: rgba(255,255,255,0.15);
  letter-spacing: 0.05em;
  user-select: none;
  background: radial-gradient(ellipse at 60% 30%, #2d4a2d 0%, #111811 100%);
}

/* ================================================================
   EDUCATION & WORK EXPERIENCE (Shared Timeline)
   ================================================================ */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 24px;
  border-left: 1px solid var(--border);
  margin-top: 8px;
}

.timeline-item {
  position: relative;
  padding: 0 0 44px 32px;
}

.timeline-dot {
  position: absolute;
  left: -7px;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 2px rgba(235,235,235,0.2);
}

.timeline-year {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dim);
  background: var(--accent-muted);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
  border: 1px solid var(--tag-border);
}

.timeline-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}

.timeline-place {
  font-size: 13.5px;
  color: var(--accent-dim);
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

.timeline-list {
  list-style: disc;
  padding-left: 18px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
}

.timeline-list li { margin-bottom: 4px; }

/* ================================================================
   PERSONAL SKILLS
   ================================================================ */
.skills-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 8px;
}

.skills-cat {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 24px;
}

/* Skill bars */
.skill-group {
  margin-bottom: 36px;
}

.skill-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-dim);
  margin-bottom: 20px;
  text-transform: capitalize;
}

.skill-bullet {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.skill-icons-row {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 36px;
  align-items: flex-end;
}

.skill-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: default;
  transition: transform 0.2s;
}
.skill-icon-item:hover { transform: translateY(-4px); }

.skill-icon-item svg,
.skill-icon-item img {
  width: 56px;
  height: 56px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.35));
}

.skill-icon-item span {
  font-size: 12px;
  color: var(--accent-dim);
  text-align: center;
  max-width: 80px;
  line-height: 1.3;
}

/* Soft skill tags */
.soft-skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.soft-tag {
  font-size: 13px;
  color: rgba(235,235,235,0.75);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 7px 16px;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s;
}
.soft-tag:hover { background: rgba(235,235,235,0.15); color: var(--accent); }

/* ================================================================
   PROJECT PORTFOLIO
   ================================================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s, border-color 0.25s;
}
.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.18);
}

.portfolio-card-img {
  position: relative;
  height: 180px;
  background: #1c1c1c;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

/* Slider CSS */
.portfolio-slider {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.portfolio-slides {
  width: 100%;
  height: 100%;
  display: flex;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-slide {
  flex-shrink: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Controls */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background: rgba(28, 28, 28, 0.75);
  border: 1px solid rgba(235, 235, 235, 0.15);
  border-radius: 50%;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, background-color 0.2s, border-color 0.2s;
  z-index: 5;
}

.slider-btn svg {
  width: 14px;
  height: 14px;
  stroke: var(--accent);
}

.portfolio-card-img:hover .slider-btn {
  opacity: 1;
  pointer-events: auto;
}

.slider-btn:hover {
  background: var(--bg-card);
  border-color: rgba(235, 235, 235, 0.3);
}

.prev-btn { left: 8px; }
.next-btn { right: 8px; }

/* Dots */
.slider-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 5;
}

.slider-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.2s;
}

.slider-dot.active {
  background: var(--accent);
  transform: scale(1.2);
}

.portfolio-img-placeholder {
  position: absolute;
  inset: 0;
  color: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-card-body { padding: 20px; }

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.ptag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 2px 8px;
  border-radius: 100px;
}

.portfolio-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--accent);
}

.portfolio-desc {
  font-size: 13.5px;
  color: var(--accent-dim);
  line-height: 1.65;
  margin-bottom: 16px;
}

.portfolio-links { display: flex; gap: 16px; align-items: center; }

.plink {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 0.2s;
}
.plink:hover { opacity: 0.7; }

.plink-secondary {
  color: var(--accent-dim);
  font-weight: 400;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 40px;
  text-align: center;
  font-size: 13px;
  color: rgba(235,235,235,0.3);
}

/* ================================================================
   TOOLTIP POPUPS
   ================================================================ */
.tooltip-container {
  position: relative;
  display: inline-block;
}

.tooltip-popup {
  position: absolute;
  bottom: 130%; /* Position above the icon */
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

/* Triangle indicator */
.tooltip-popup::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: var(--bg-card) transparent transparent transparent;
}
/* Border triangle helper (matches border style) */
.tooltip-popup::before {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 7px;
  border-style: solid;
  border-color: var(--border) transparent transparent transparent;
  z-index: -1;
}

.tooltip-popup .tooltip-sub {
  font-size: 9px;
  color: var(--accent-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* Show state */
.tooltip-container.active .tooltip-popup {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ================================================================
   CERTIFICATIONS
   ================================================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.cert-card:hover {
  border-color: rgba(235,235,235,0.18);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}

/* Image area on top */
.cert-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: rgba(255,255,255,0.03);
  overflow: hidden;
}

.cert-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.cert-card:hover .cert-image {
  transform: scale(1.04);
}

/* Placeholder icon when image fails */
.cert-placeholder-text {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  color: rgba(235,235,235,0.15);
}

.cert-image-wrap.cert-no-img .cert-image {
  display: none;
}

.cert-image-wrap.cert-no-img .cert-placeholder-text {
  display: flex;
}

/* Card body below image */
.cert-card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

/* Tags row */
.cert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cert-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dim);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 4px 10px;
  border-radius: 20px;
}

/* Title */
.cert-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.35;
  margin: 2px 0 0;
}

/* Description */
.cert-desc {
  font-size: 13.5px;
  color: var(--accent-dim);
  line-height: 1.6;
  margin: 0;
}

/* View Certificate link */
.cert-link {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
  padding-top: 6px;
  text-align: left;
  transition: opacity 0.2s ease;
}

.cert-link:hover {
  opacity: 0.7;
}

/* ================================================================
   CERTIFICATE LIGHTBOX
   ================================================================ */
.cert-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cert-lightbox.active {
  display: flex;
  animation: lightboxFadeIn 0.25s ease forwards;
}

@keyframes lightboxFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.cert-lightbox-inner {
  background: var(--bg-card);
  border: 1px solid rgba(235,235,235,0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6);
  animation: lightboxScaleIn 0.28s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

@keyframes lightboxScaleIn {
  from { transform: scale(0.88); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.cert-lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.cert-lightbox-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.cert-lightbox-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dim);
  transition: background 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.cert-lightbox-close svg {
  width: 18px;
  height: 18px;
}

.cert-lightbox-close:hover {
  background: var(--accent-muted);
  color: var(--accent);
}

.cert-lightbox-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(90vh - 65px);
  object-fit: contain;
  background: rgba(255,255,255,0.02);
}

/* ================================================================
   PROJECT LIGHTBOX
   ================================================================ */
.project-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.project-lightbox.active {
  display: flex;
  animation: lightboxFadeIn 0.25s ease forwards;
}

.project-lightbox-inner {
  background: var(--bg-card);
  border: 1px solid rgba(235, 235, 235, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 960px;
  width: 100%;
  max-height: 95vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6);
  animation: lightboxScaleIn 0.28s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

.project-lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.project-lightbox-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.project-lightbox-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dim);
  transition: background 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.project-lightbox-close svg {
  width: 18px;
  height: 18px;
}

.project-lightbox-close:hover {
  background: var(--accent-muted);
  color: var(--accent);
}

/* Lightbox Content Area */
.project-lightbox-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  background: rgba(0, 0, 0, 0.2);
  min-height: 300px;
  overflow: hidden;
}

.project-lightbox-img {
  display: block;
  max-width: 100%;
  max-height: calc(95vh - 120px);
  object-fit: contain;
}

/* Lightbox Navigation Buttons */
.project-lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(28, 28, 28, 0.8);
  border: 1px solid rgba(235, 235, 235, 0.15);
  border-radius: 50%;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
  z-index: 10;
}

.project-lightbox-nav-btn svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent);
}

.project-lightbox-nav-btn:hover {
  background: var(--bg-card);
  border-color: rgba(235, 235, 235, 0.3);
  transform: translateY(-50%) scale(1.05);
}

.project-lightbox-nav-btn.prev { left: 16px; }
.project-lightbox-nav-btn.next { right: 16px; }

/* Lightbox Footer */
.project-lightbox-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
  background: rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.project-lightbox-counter {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-dim);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 768px) {
  .main-nav { padding: 0 16px; }
  .panel-inner { padding: 40px 20px; }

  .about-layout,
  .presentation-layout {
    grid-template-columns: 1fr;
    gap: 36px;
    min-height: unset;
  }

  .about-photo,
  .presentation-photo {
    order: -1;
    justify-content: flex-start;
  }

  .photo-frame {
    width: 240px;
    height: 310px;
  }

  .skills-columns {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .tab-btn { padding: 14px 14px; font-size: 12.5px; }
  .section-heading { font-size: 2rem; }
  .big-name { font-size: 2.8rem; }
}

@media (max-width: 480px) {
  .portfolio-grid { grid-template-columns: 1fr; }
}