:root {
  --bg: #0D0E0F;               
  --surface: #17191C;          
  --surface-light: #1F2226;      
  --text: #F5F7FA;               
  --muted: #9DA1A9;              
  --accent: #00E5FF;             
  --accent-soft: rgba(0, 229, 255, 0.18);
  --border: #23262B;
  --radius-lg: 1.4rem;
  --radius-md: 0.9rem;
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.55);
  --gap: 1.7rem;
}

/* ------------------------ Base Reset ------------------------ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;

  background: radial-gradient(circle at top, #141518 0%, var(--bg) 60%);
  color: var(--text);
  padding: 2.5rem clamp(1.5rem, 3vw, 3rem);
  line-height: 1.6;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
}

/* ------------------------ Header ------------------------ */

header {
  margin-bottom: 2.5rem;
}

header h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}

header p {
  margin-top: 0.5rem;
  color: var(--muted);
  max-width: 560px;
  font-size: 0.95rem;
}

/* Portfolio Tagline */
.tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}

.tagline-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ------------------------ Grid Layout ------------------------ */

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: var(--gap);
}

/* ------------------------ Project Card ------------------------ */

.project-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: background 150ms ease-out, border-color 150ms ease-out;
}

.portfolio-grid {
  overflow: visible; /* let hovered cards extend outside their cell */
}

.project-card {
  position: relative;
  transition:
    transform 160ms ease-out,
    box-shadow 160ms ease-out,
    background 160ms ease-out,
    border-color 160ms ease-out;
  z-index: 0;
}

.project-card:hover {
  transform: scale(1.1);          
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.75);
  z-index: 5;                      
}

.project-card:hover {
  background: var(--surface-light);
  border-color: var(--accent);
}

/* ------------------------ Images ------------------------ */

.project-media {
  position: relative;
}

.project-main-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 150ms ease-out, filter 150ms ease-out;
}

.project-card:hover .project-main-image {
  transform: scale(1.02);
  filter: brightness(1.08);
}

/* ------------------------ Carousel ------------------------ */

.carousel-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.8rem 0.6rem;
  background: rgba(10, 12, 14, 0.95);
  border-top: 1px solid var(--border);
}

.carousel-buttons {
  display: flex;
  gap: 0.25rem;
}

.carousel-btn {
  border-radius: 999px;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(20, 25, 30, 0.9);
  color: var(--text);
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.carousel-btn:hover {
  border-color: var(--accent);
  background: rgba(20, 25, 30, 0.95);
}

.carousel-dots {
  display: flex;
  gap: 0.22rem;
  align-items: center;
}

.carousel-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  border: none;
}

.carousel-dot.active {
  width: 14px;
  background: var(--accent);
}

.carousel-toggle {
  margin-bottom: 1rem;
  opacity: 0.6;
  transition: opacity 150ms ease;
  user-select: none;
}

.carousel-toggle:hover {
  opacity: 1;
}

.carousel-toggle label {
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.carousel-toggle input {
  margin-right: 6px;
  transform: scale(1.1);
}

.carousel-toggle {
  margin-top: 1.2rem;
  display: flex;
  justify-content: flex-end; 
}

.toggle-btn {
  padding: 0.45rem 1rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(120, 150, 160, 0.35);
  background: rgba(35, 40, 45, 0.55);
  color: rgba(200, 230, 240, 0.85);
  font-size: 0.85rem;
  font-family: inherit;        
  cursor: pointer;
  transition: all 140ms ease;
  user-select: none;
}

/* ON State */
.toggle-on {
  background: rgba(30, 120, 140, 0.35);
  border-color: rgba(100, 200, 220, 0.45);
  color: rgba(220, 255, 255, 1);
}

/* Hover effect */
.toggle-btn:hover {
  background: rgba(55, 70, 75, 0.45);
}
/* ------------------------ Card Info ------------------------ */

.project-info {
  padding: 1.15rem 1.35rem 1.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  color: var(--text);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--muted);
}

.project-meta span {
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(150, 150, 160, 0.3);
  background: rgba(25, 28, 32, 0.7);
  display: inline-block;              
  max-width: min(18rem, 100%);        
  white-space: normal;               
}

.project-description {
  font-size: 0.93rem;
  color: var(--muted);
}

.project-highlights {
  padding-left: 1.15rem;
  font-size: 0.88rem;
  color: var(--text);
}

.project-highlights li + li {
  margin-top: 0.15rem;
}

.project-tools {
  margin-top: 0.45rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.tool-pill {
  font-size: 0.75rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: rgba(50, 70, 85, 0.7);
  border: 1px solid rgba(100, 150, 170, 0.45);
  color: #d6ecff;
}

@media (max-width: 720px) {
  body {
    padding-inline: 1.25rem;
  }
}

/* ------------------------ Project Link Buttons ------------------------ */

.project-links {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.link-btn {
  padding: 0.45rem 1rem;
  border-radius: 0.6rem;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;

  /* Matte grey base with tiny cyan tint */
  background: rgba(40, 50, 55, 0.35);
  border: 1px solid rgba(120, 150, 160, 0.28);

  /* Grey-cyan text */
  color: rgba(180, 220, 230, 0.75);

  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.link-btn:hover {
  background: rgba(55, 70, 75, 0.45);       
  border-color: rgba(140, 180, 190, 0.4);
  color: rgba(200, 240, 255, 0.9);           
}

.link-btn:active {
  background: rgba(70, 90, 95, 0.5);
  border-color: rgba(160, 200, 210, 0.45);
}


/* ---------------------- Lightbox Viewer ---------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease;
  z-index: 9999;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.65);
}

/* Close button */
.lightbox-close {
  position: fixed;
  top: 20px;
  right: 30px;
  font-size: 40px;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.85);
  transition: 0.15s;
  z-index: 10000;
}

.lightbox-close:hover {
  color: #ffffff;
}

/* Prev / next inside lightbox */
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: rgba(0, 0, 0, 0.55);
  color: rgba(255, 255, 255, 0.85);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 140ms ease, color 140ms ease;
  z-index: 10000;
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.226);
  color: #ffffff;
}

.lightbox-prev {
  left: 30px;
}

.lightbox-next {
  right: 30px;
}