/* Root color variables */
:root {
 /* --color-background: #ffffff; /* white */
 /* --color-text: #333333; /* dark gray */
 /* --color-accent: #0F5132; /* royal green */
 /*--color-soft: #F3F4F6; /* soft gray */

  
/*  --color-background: #FFF5EE; 
   --color-text: #2d2d30; 
   --color-accent: #2d2d30; 
   --color-soft: #FAF0E6; */

  --color-background: #0a192f; 
   --color-text: #8892b0; 
   --color-accent: #54d9bd; 
   --color-soft: #111b36;
   --color-header: #ccd6f6; 

   

  --shadow-sm: 0 2px 6px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
  --radius: 12px;
  --header-height: 64px;
}

/* Reset & base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
  padding-top: var(--header-height);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

/* Header & nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-background);
  backdrop-filter: saturate(150%) blur(10px);
  z-index: 1000;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.site-header.nav-hidden {
  transform: translateY(-100%);
}
.site-header.nav-shadow {
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-height);
  padding: 0 4vw;
}
.logo {
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}
.nav-menu {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-menu a {
  display: inline-block;
  padding: 0.5rem 0.25rem;
  border-radius: 8px;
  transition: transform 160ms ease, color 160ms ease;
}
.nav-menu a:hover, .nav-menu a:focus {
  color: var(--color-accent);
  background: transparent;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-soft);
  background: #fff;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
}
.nav-toggle .bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  margin: 3px 0;
}

/* Hero */
.hero h1, h1, h2, h3 { color: var(--color-accent); }

.hero {
  padding: 8rem 0 4rem;
}
.hero h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  margin: 0 0 0.5rem;
}
.subtitle {
  color: var(--color-text);
  max-width: 65ch;
  margin: 0 0 1.5rem;
}
.hero-cta { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Sections */
.section { padding: 4rem 0; }
.section.projects-section { background: var(--color-soft); }
.grid.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
}
.about-card {
  background: var(--color-soft);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  padding: 1.25rem;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
  margin-top: 2rem;
}
.about-stats .stat {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}
.about-stats .label { color: var(--color-text); opacity: 0.8; font-size: 0.9rem; }
.details { padding-left: 1rem; }
.details li { margin: 0.25rem 0; }

/* Section headers with horizontal lines */
.section h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 2rem;
  cursor: pointer;
}
.section h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.5rem;
  width: 100%;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.section h2:hover::after {
  width: 60%;
}

/* Projects redesign */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}
.project-item {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 0;
  align-items: center;
  position: relative;
}
.project-info {
  background: var(--color-background);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 2;
  position: relative;
  margin-right: -2rem;
}
.project-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease;
}
.project-image:hover {
  transform: scale(1.02);
}
.project-image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  display: block;
}
.project-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}
.project-image:hover::before {
  opacity: 0.3;
}
.project-title {
  font-size: 1.5rem;
  margin: 0 0 1rem;
  color: var(--color-accent);
}
.project-description {
  color: var(--color-text);
  margin: 0 0 1.5rem;
  line-height: 1.6;
}
.project-tech {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.tech-tag {
  background: var(--color-soft);
  color: var(--color-text);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}
.card {
  border: 2px solid #e5e7eb;
  border-radius: var(--radius);
  background: #FFF5EE; 
  box-shadow: var(--shadow-sm);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.card-body { padding: 1.1rem; }
.card-title { margin: 0 0 0.35rem; font-size: 1.2rem; }
.card-text { margin: 0 0 0.85rem; color: var(--color-text); opacity: 0.9; }
.card-actions { display: flex; gap: 0.5rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--color-soft);
  background: var(--color-soft);
  color: var(--color-text);
  font-weight: 600;
  transition: transform 160ms ease, box-shadow 180ms ease, background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.btn.primary {
  background: var(--color-background);
  border-color: var(--color-accent);
  color: #ffffff;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.btn.ghost {
  background: transparent;
  border-color: #e5e7eb;
}
.btn.small { padding: 0.45rem 0.7rem; font-size: 0.9rem; }

/* Contact */
/* Contact actions */
.contact-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.socials { display: flex; gap: 0.5rem; }
.socials a {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: none; background: var(--color-background); box-shadow: var(--shadow-sm);
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 160ms ease;
}
.socials a:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--color-soft); }
.socials svg { width: 20px; height: 20px; fill: var(--color-text); }
.socials a:hover svg { fill: var(--color-accent); }

/* Footer */
.site-footer { border-top: 1px solid var(--color-soft); }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 4vw;
}
.back-to-top { color: var(--color-accent); }

/* Responsive */
@media (max-width: 900px) {
  .project-item {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .project-info {
    margin-right: 0;
    order: 2;
  }
  .project-image {
    order: 1;
  }
  .grid.two-col { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute;
    right: 4vw;
    top: var(--header-height);
    background: var(--color-background);
    border: 1px solid var(--color-soft);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 0.6rem;
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 160px;
  }
  .nav-menu.open { display: flex; }
  .project-info {
    padding: 1.5rem;
  }
  .project-image img {
    height: 200px;
  }
}