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

/* --------------------
   VARIABLES
-------------------- */
:root{
  --bg-color: #0f172a;  
  --section-bg: #020617;   
  --text-color: #e5e7eb;     
  --muted-text: #94a3b8;
  --accent: #38bdf8; 
  --card-bg:#020617;
  --botder-color:  #1e293b;
}

/* -------------------- 
   NAVIGATION 
-------------------- */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.8); 
  backdrop-filter: blur(10px); /* Glass effect */
  border-bottom: 1px solid var(--botder-color);
}

nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: rgba(56, 189, 248, 0.8); 
  letter-spacing: -1px;
  text-shadow: 0 0 15px rgba(56, 189, 248, 0.2); 
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

nav ul a {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* --------------------
   GLOBAL STYLES
-------------------- */
html{
  scroll-behavior: smooth;
}

body{
  font-family: "Inter", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  padding-top: 4rem; /* Offset for fixed nav */
}

/* --------------------
   SECTIONS & LAYOUT
-------------------- */
main{
  max-width: 1100px;
  margin: auto;
}

section{
  padding: 6rem 1.5rem;
}

#hero{
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
}

#hero a {
  display: inline-block; /* Essential to make padding/borders work */
  margin-top: 2rem;
  padding: 0.8rem 1.5rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  color: var(--accent);
  transition: all 0.3s ease;
}

#hero a:hover {
  background: var(--accent);
  color: var(--bg-color);
}

#hero h1{
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
}

.project-card{
  background: linear-gradient(180deg, var(--bg-color) 0%, var(--section-bg) 100%);
  border: 1px solid var(--botder-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-card:hover{
  transform: translateY(-4px);
  border-color: var(--accent);
}

#skills ul{
  display: grid ;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  list-style: none;
}

#skills li{
  background: var(--card-bg);
  border: 1px solid var(--botder-color);
  padding: 0.75rem 1rem;
  border-radius: 5px;
  text-align: center;
}

#about p{
  color: var(--muted-text); 
}

footer{
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--botder-color);
  color: var(--muted-text);
}