/* GLOBAL */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  background: #f4f6f9;
  color: #1a1d23;
  line-height: 1.7;
}

/* NAVIGATION */
nav {
  background: #0a0f1f;
  padding: 18px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  color: #fff;
  font-size: 1.6rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
}

.logo a {
  text-decoration: none;
  color: inherit;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.5px;
}

.logo a:hover {
  opacity: 0.8;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}

nav ul li a {
  color: #e6e9ef;
  text-decoration: none;
  font-size: 1.05rem;
  transition: 0.2s;
}

nav ul li a:hover {
  color: #fff;
}

ul, ol {
  padding-left: 2rem;
  margin-left: 0;
}

ul li, ol li {
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

/* HERO SECTION */
.hero {
  padding: 50px 30px;
  text-align: center;
  background: linear-gradient(135deg, #0a0f1f, #1c1f26);
  color: #e6e9ef;
  border-radius: 0 0 12px 12px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: auto;
  opacity: 0.9;
  margin-bottom: 30px;
}

.hero .btn {
  margin-top: 20px;
  font-size: 1.2rem;
  padding: 16px 36px;
}

/* SECTIONS */
.section {
  padding: 32px 30px;
  max-width: 1100px;
  margin: auto;
}

.section h2 {
  font-size: 2.2rem;
  margin-bottom: 25px;
  font-weight: 700;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  background: #0078ff;
  color: #fff !important;
  text-decoration: none !important;
  border-radius: 6px;
  font-size: 1.15rem;
  font-weight: 600;
  transition: 0.2s;
  box-shadow: 0 4px 12px rgba(0, 120, 255, 0.25);
}

.btn:hover {
  background: #005fcc;
  box-shadow: 0 6px 18px rgba(0, 120, 255, 0.35);
  transform: translateY(-2px);
}

/* PORTFOLIO GRID */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

/* PORTFOLIO CARD (BASE) */
.portfolio-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.portfolio-card:hover {
  transform: translateY(-4px);
}

/* Compact mode hides expanded content */
.portfolio-card.compact .card-expanded {
  display: none;
}

/* CARD HEADER + CHEVRON */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h3 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  color: #0a0f1f;
}

.card-header p {
  margin: 0.5rem 0 0;
  color: #555;
}

.chevron {
  width: 14px;
  height: 14px;
  border-right: 2px solid #444;
  border-bottom: 2px solid #444;
  transform: rotate(45deg);
  transition: transform 0.3s ease;
  margin-left: 1rem;
}

.portfolio-card:not(.compact) .chevron {
  transform: rotate(-135deg);
}

/* COLLAPSED PREVIEW (FADE) */
.portfolio-card.compact .details {
  max-height: 4.5rem;
  overflow: hidden;
  position: relative;
}

.portfolio-card.compact .details::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  height: 1.5rem;
  width: 100%;
  background: linear-gradient(to bottom, transparent, #fff);
}

/* IMAGE VIEWER */
.image-viewer {
  position: relative;
  margin: 1rem 0 1.2rem;
  text-align: center;
}

.image-viewer .main-image {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #fafafa;
}

.image-viewer .nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: #00000055;
  color: white;
  border: none;
  font-size: 2rem;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
  border-radius: 4px;
}

.image-viewer .nav.left {
  left: 10px;
}

.image-viewer .nav.right {
  right: 10px;
}

/* THUMBNAILS */
.thumbs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  margin-bottom: 1.2rem;
}

.thumbs img.thumb {
  height: 70px;
  width: auto;
  object-fit: contain;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: pointer;
  background: white;
}

/* MARKDOWN CONTENT (DETAILS) */
.portfolio-card .details h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #1a1d23;
}

.portfolio-card .details h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
  color: #1a1d23;
}

.portfolio-card .details p {
  margin: 0.6rem 0 1rem;
  line-height: 1.6;
}

.portfolio-card .details ul,
.portfolio-card .details ol {
  margin: 0.6rem 0 1rem;
  padding-left: 2rem;
}

.portfolio-card .details li {
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

/* FOOTER */
footer {
  background: #0a0f1f;
  color: #e6e9ef;
  text-align: center;
  padding: 25px;
  margin-top: 60px;
  font-size: 0.95rem;
}