/* =========================================================
   PORTFOLIO — style.css
   ========================================================= */

/* === Variables ========================================= */
:root {
  --bg:           #ffffff;
  --text:         #111111;
  --text-muted:   #777777;
  --border:       #e8e8e8;
  --surface:      #f5f5f5;
  --overlay:      rgba(10, 10, 10, 0.78);
  --nav-h:        60px;
  --max-w:        1200px;
  --font:         -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --ease:         0.32s ease;
}

/* === Reset ============================================= */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html   { scroll-behavior: smooth; }
body   { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; }
a      { color: inherit; text-decoration: none; }
img    { max-width: 100%; display: block; }
button { font-family: var(--font); }

/* === Navigation ======================================== */
nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--ease);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  color: var(--text);
  transition: all var(--ease);
}
.lang-toggle:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* === Page header ======================================= */
.page-header {
  padding: 3.5rem 2rem 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.page-header h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}
.home-intro {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 52ch;
  line-height: 1.6;
}

/* === Projects grid ===================================== */
.projects-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.5rem 2rem 5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 880px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .projects-grid { grid-template-columns: 1fr; } }

/* === Category headers (grid) =========================== */
.category-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.category-header::before,
.category-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.category-header::before { display: none; } /* left line hidden for clean left alignment */

/* Independent section — slightly more prominent divider */
.category-header--alt {
  margin-top: 1.5rem;
  color: var(--text-muted);
}
.category-header--alt::before { display: block; }

/* === Project card ====================================== */
.project-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  aspect-ratio: 4 / 3;
  display: block;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Placeholder when no image */
.thumb-placeholder,
.media-placeholder,
.photo-placeholder {
  background-color: #f0f0f0;
  background-image:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 9px,
      rgba(0,0,0,0.035) 9px,
      rgba(0,0,0,0.035) 18px
    );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #aaa;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 1rem;
}

.placeholder-icon {
  width: 28px;
  height: 28px;
  opacity: 0.35;
}

.project-card .thumb-placeholder {
  width: 100%;
  height: 100%;
}

.project-card .overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.4rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-card:hover img       { transform: scale(1.05); }
.project-card:hover .overlay  { opacity: 1; }

.overlay h3 {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}
.overlay p {
  color: rgba(255,255,255,0.75);
  font-size: 0.82rem;
  margin-bottom: 0.75rem;
  line-height: 1.5;
}
.overlay-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.overlay-tag  {
  background: rgba(255,255,255,0.18);
  color: #fff;
  padding: 0.18rem 0.5rem;
  border-radius: 3px;
  font-size: 0.72rem;
}

/* === Project page ====================================== */
.project-hero {
  padding: 3rem 2rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  transition: color var(--ease);
}
.back-link:hover { color: var(--text); }
.back-link svg { width: 14px; height: 14px; }

.project-hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.project-main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}

/* Media + data */
.project-media-data {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 4rem;
}
@media (max-width: 760px) { .project-media-data { grid-template-columns: 1fr; gap: 2rem; } }

.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  background: #000;
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.project-media img,
.project-media video {
  width: 100%;
  border-radius: 8px;
  background: var(--surface);
}
.project-media .media-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.project-data { padding-top: 0.5rem; }
.project-data dl { display: grid; row-gap: 1.4rem; }
.project-data dt {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}
.project-data dd { font-size: 0.95rem; font-weight: 500; }

/* Content sections */
.project-section { margin-bottom: 4rem; }

.project-section.text p {
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 66ch;
  color: #333;
  margin-bottom: 1rem;
}
.project-section.text p:last-child { margin-bottom: 0; }

.project-section.text-image {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.project-section.text-image.reverse {
  direction: rtl;
}
.project-section.text-image.reverse > * { direction: ltr; }

@media (max-width: 760px) {
  .project-section.text-image,
  .project-section.text-image.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
}

.project-section.text-image img {
  width: 100%;
  border-radius: 8px;
  background: var(--surface);
}
.project-section.text-image p {
  font-size: 1rem;
  line-height: 1.85;
  color: #333;
}

/* === Project intro ===================================== */
.project-intro {
  margin-bottom: 3.5rem;
}
.project-intro p {
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 62ch;
  color: #333;
  margin-bottom: 1rem;
}
.project-intro p:last-child { margin-bottom: 0; }

/* === Project detail (text + image) ==================== */
.project-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3.5rem;
}
@media (max-width: 760px) {
  .project-detail { grid-template-columns: 1fr; gap: 2rem; }
}
.detail-text p {
  font-size: 1rem;
  line-height: 1.85;
  color: #333;
  margin-bottom: 1rem;
}
.detail-text p:last-child { margin-bottom: 0; }
.detail-image img {
  width: 100%;
  border-radius: 8px;
}

/* === Project gallery (up to 3 images) ================= */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 4rem;
}
.project-gallery:empty { display: none; }
.project-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}
@media (max-width: 700px) {
  .project-gallery { grid-template-columns: 1fr; }
}

/* More projects */
.more-projects {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 4rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.more-projects h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.more-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 600px) { .more-grid { grid-template-columns: repeat(2, 1fr); } }

.more-grid .project-card { aspect-ratio: 16/9; }

/* === About page ======================================== */
.about-layout {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 2rem 5rem;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 740px) { .about-layout { grid-template-columns: 1fr; gap: 2rem; } }

.about-photo img {
  width: 100%;
  border-radius: 8px;
  background: var(--surface);
}
.about-photo .photo-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.about-content h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}
.about-content p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #333;
  margin-bottom: 1.2rem;
  max-width: 62ch;
}

.skills-section { margin-top: 2rem; }
.skills-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.skills-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tag {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  font-size: 0.82rem;
}

.contact-section { margin-top: 2.5rem; }
.contact-links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.75rem; }
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.875rem;
  transition: all var(--ease);
}
.contact-link:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.contact-link svg { width: 15px; height: 15px; }

/* === Resume page ======================================= */
.resume-page {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.resume-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}
.resume-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.3rem;
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 5px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.download-btn:hover { opacity: 0.75; }
.download-btn svg { width: 15px; height: 15px; }

.resume-section { margin-bottom: 3rem; }
.resume-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.8rem;
}

.resume-item { margin-bottom: 2rem; }
.resume-item:last-child { margin-bottom: 0; }
.resume-item-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.25rem;
}
.resume-item-title    { font-weight: 600; font-size: 0.98rem; }
.resume-item-date     { color: var(--text-muted); font-size: 0.82rem; white-space: nowrap; }
.resume-item-subtitle { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 0.5rem; }
.resume-item p        { font-size: 0.9rem; color: #444; line-height: 1.75; max-width: 64ch; }

/* === Footer ============================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* === Utilities ========================================= */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  nav { padding: 0 1rem; }
  .nav-links { gap: 1.2rem; }
  .page-header { padding: 2rem 1rem 1.5rem; }
  .projects-grid { padding: 0.5rem 1rem 3rem; }
  .project-hero, .project-main, .more-projects,
  .about-layout, .resume-page { padding-left: 1rem; padding-right: 1rem; }
}