:root {
  --bg-dark: #0b1220;
  --bg-light: #f5f7fb;
  --text-dark: #fff;
  --text-light: #0b1220;
  --accent: #00d1d1;
  --card-dark: #111a2e;
  --card-light: #fff;
}

/* BASE */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg-light);
  color: var(--text-light);
  transition: 0.3s;
}

body.dark {
  background: var(--bg-dark);
  color: var(--text-dark);
}

 /* ================= HEADER ================= */
header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:15px 20px;
  background:#fff;
  position:sticky;
  top:0;
  z-index:1000;
}

body.dark header {
  background: linear-gradient(90deg, #0b1220, #0f1c35);
}

.logo {
  text-decoration: none;
  font-size: 22px;
  font-weight: bold;
  color: var(--accent);
  order: 2; /* default logo right side */
}

.menu-btn {
  display: none; /* hidden on desktop */
  font-size: 28px;
  cursor: pointer;
  user-select: none;
  order: 1; /* left side */
  background: none;
  border: none;
  color: var(--accent);
}

/* NAVIGATION */
nav {
  display: flex;
  gap: 20px;
  align-items: center;
  order: 3;
}

nav a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--accent);
}

/* PAGE CONTENT */

.page-head {
  max-width: 1100px;
  margin: 70px auto 40px;
  padding: 0 20px;
}

.page-head h1 {
  font-size: 36px;
}

.page-head span {
  color: var(--accent);
}

.page-head p {
  opacity: 0.8;
}

/* ARTICLES GRID */
.articles {
  max-width: 1100px;
  margin: 0 auto 80px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* ARTICLE CARD */
.article-card {
  background: var(--card-light);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: 0.3s;
  width: 100%;
  display: flex;
  flex-direction: column;
}

body.dark .article-card {
  background: var(--card-dark);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.article-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  flex-shrink: 0;
}

.article-content {
  padding: 20px;
  flex-grow: 1;
}

.article-content h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.article-content a {
  text-decoration: none;
  color: var(--accent);
  font-size: 14px;
}

/* FOOTER */
footer {
  background: #ffffff;
  padding: 50px 20px;
  margin-top: 80px;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

body.dark footer {
  background: linear-gradient(180deg, #0b1220, #070d18);
  border-top: none;
}

.footer-container {
  max-width: 1100px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-left {
  flex: 0 1 260px;
}

.footer-left h3 {
  margin-top: 0;
  color: var(--accent);
}

.footer-left p {
  font-size: 16px;
  line-height: 1.7;
  opacity: 0.85;
  width: 180%;
}

.footer-right {
  min-width: 400px;
}

.footer-right h4 {
  margin-bottom: 15px;
  font-size: 16px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  text-decoration: none;
  color: inherit;
  font-size: 14px;
  opacity: 0.85;
  transition: 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  margin-top: 35px;
  font-size: 13px;
  opacity: 0.6;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  
 header{
    display:flex;
    align-items:center;
    justify-content: space-between; 
  }

  .menu-btn{
    display:block;   
    color:black;
    font-size:28px;
    z-index:6000;
  }

  .logo{
    margin-left:0;  
    color: var(--accent);
    text-decoration:none;
    white-space: nowrap;
  }

  nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 220px;
    background: #fff;
    flex-direction: column;
    padding: 80px 20px 20px;
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%);
    display: flex;
    align-items: center; 
    z-index: 4000;
  }

  nav.show {
     gap: 0px;
    display:flex;
    transform: translateX(0);
  }

  nav a {
    width: 100%;
    text-align: center;
    padding: 10px 0;
    font-size: 16px;
  }

  nav a:hover {
    color: var(--accent);
  }

  /* PAGE HEADER */
  .page-head {
    margin: 50px auto 30px;
    padding: 0 15px;
  }

  .page-head h1 {
    font-size: 28px;
  }

  .page-head p {
    font-size: 14px;
  }

  /* ARTICLES */
  .articles {
    max-width: 100%;
    padding: 0 15px;
    margin-bottom: 50px;
    grid-template-columns: 1fr; 
    gap: 16px;
  }

  /* ARTICLE CARD */
  .article-card img {
    height: 150px;
  }

  .article-content h3 {
    font-size: 16px;
  }

  .article-content a {
    font-size: 13px;
  }

  /* FOOTER */
  .footer-container {
    flex-direction: column;
    gap: 20px;
    align-items: center;
    text-align: center;
  }

  .footer-left,
  .footer-right {
    min-width: 100%;
  }

  .footer-left p {
    width: 100%;
    font-size: 14px;
  }

  .footer-right h4 {
    font-size: 15px;
  }

  .footer-links {
    align-items: center;
  }

  .footer-links li {
    margin-bottom: 8px;
  }

  .footer-links a {
    font-size: 13px;
  }

  .footer-bottom {
    font-size: 12px;
    margin-top: 25px;
  }
}