:root {
  --bg: #000000;        /* Black background */
  --card: #0d0d0d;      /* Dark black card */
  --text: #ffffff;      /* White text */
  --muted: #e6e6e6;     /* Light muted text */
  --accent: #007bff;    /* Blue */
  --accent-2: #ffd700;  /* Yellow */
  --border: #1a1a1a;    /* Dark border */
  --chip: #111111;      /* Black chip */
}

*{box-sizing:border-box}

html,body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;
  scroll-behavior:smooth;
}

a{color:var(--accent);text-decoration:none}
a:hover{opacity:.9;text-decoration:underline}

.container{max-width:1100px;margin:0 auto;padding:24px}

header{
  position:relative;
  background:linear-gradient(135deg, rgba(0,123,255,.15), rgba(255,215,0,.1)); /* Blue-Yellow gradient */
  border:1px solid var(--border);
  border-radius:20px;
  padding:48px 24px;
  overflow:hidden;
}

/* top-right photo */
.avatar{
  position:absolute;
  top:24px; right:24px;
  width:120px; height:120px;
  border-radius:18px;
  object-fit:cover;
  border:2px solid rgba(255,255,255,.3);
  box-shadow:0 10px 30px rgba(0,0,0,.6);
  background:#000;
}

.hero{
  text-align:center;
  padding-right:170px;
}

h1{font-size:40px;
  line-height:1.1;
  margin:0 0 8px;
  color:var(--accent-2);
} /* Yellow main heading */
.subtitle{color:var(--muted);font-size:18px;margin:0 0 18px}

.contact{
  display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:8px
}

.contact a{
  background:var(--chip);
  border:1px solid var(--border);
  padding:10px 14px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:600;
  color:var(--accent-2); /* Yellow contact text */
}

/* Academic Timetable */
.timetable h2 {
  margin-bottom: 12px;
  font-size: 24px;
  color: var(--accent-2); /* Yellow */
}

.timetable table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  margin-top: 10px;
}

.timetable th,
.timetable td {
  border: 1px solid var(--border);
  padding: 10px;
  text-align: center;
}

.timetable th {
  background: var(--accent);  /* Blue */
  color: var(--text);         /* White */
}

.timetable td {
  background: #000000;        /* Black */
  color: var(--muted);
}

.timetable tr:hover td {
  background: #111111;
}

nav{
  display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:22px
}
nav a{
  background:transparent;
  border:1px solid var(--border);
  padding:10px 14px;
  border-radius:10px;
  color:var(--accent); /* Blue */
}

section{
  margin-top:28px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:24px
}

h2{margin:0 0 14px;font-size:26px;color:var(--accent-2);} /* Yellow headings */

.grid{
  display:grid;gap:16px;grid-template-columns:repeat(12,1fr)
}
.col-6{grid-column:span 6}
.col-4{grid-column:span 4}
.col-8{grid-column:span 8}

.p{color:var(--text);opacity:.95}
.muted{color:var(--muted)}

.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  background:var(--chip);
  border:1px solid var(--border);
  padding:8px 12px;
  border-radius:999px;
  color:var(--accent); /* Blue chip text */
}

.card{
  background:#0d0d0d;
  border:1px solid var(--border);
  border-radius:14px;
  padding:16px
}
.card h3{margin:0 0 6px;font-size:18px;color:var(--accent);} /* Blue */
.card p{margin:0;color:var(--muted)}

table{width:100%;border-collapse:collapse;margin-top:8px;border:1px solid var(--border)}
th,td{border:1px solid var(--border);padding:10px;text-align:left}
th{background:var(--accent);color:var(--text)} /* Blue header */

footer{
  text-align:center;
  color:var(--muted);
  margin:18px 0 32px
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2)); /* Blue → Yellow */
  color:#000; /* Black text */
  border:0;
  padding:12px 16px;
  border-radius:12px;
  font-weight:800
}

/* Social Icons Section */
.contactus {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

.contactus a {
  font-size: 32px;
  text-decoration: none;
  transition: transform 0.3s ease, color 0.3s ease;
}

.contactus a:hover {
  transform: scale(1.2);
}

/* Icons recolored in blue/yellow/white */
#instagram { color: #e1306c; }  /* Instagram Pink/Red */
#linkedin { color: #0a66c2; }   /* LinkedIn Blue */
#github { color: #ffffff; }     /* GitHub is usually white/black (white here for dark bg) */
#telegram { color: #0088cc; }   /* Telegram Blue */
#user { color: #ffffff; }       /* User icon stays White */


/* responsive */
@media (max-width: 900px){
  .hero{padding-right:0}
  .avatar{position:static;display:block;margin:16px auto 0;width:110px;height:110px}
  header{padding:28px 18px}
}
@media (max-width: 700px){
  .grid{grid-template-columns:repeat(6,1fr)}
  .col-6{grid-column:span 6}
  .col-4{grid-column:span 6}
  .col-8{grid-column:span 6}
  h1{font-size:32px}
}