/* ===== Aurora Glass — Light Theme ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Sora', sans-serif; background: #f2f6fd; color: #1a2233; overflow-x: hidden; line-height: 1.7; }

/* animated aurora background */
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: #f2f6fd; }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.30; animation: drift 18s ease-in-out infinite alternate; }
.b1 { width: 60vw; height: 60vw; background: #1d539f; top: -20%; left: -15%; }
.b2 { width: 45vw; height: 45vw; background: #7db4ec; bottom: -10%; right: -10%; animation-delay: -6s; }
.b3 { width: 35vw; height: 35vw; background: #9db8ff; top: 40%; left: 55%; animation-delay: -12s; opacity: 0.35; }
@keyframes drift { from { transform: translate(0, 0) scale(1); } to { transform: translate(8vw, -6vh) scale(1.15); } }

/* pill nav */
.pill-nav { position: fixed; top: 18px; left: 50%; transform: translateX(-50%); z-index: 200;
  background: rgba(255, 255, 255, 0.75); border: 1px solid rgba(29, 83, 159, 0.15); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-radius: 999px; padding: 10px 26px; display: flex; gap: 26px; align-items: center; box-shadow: 0 8px 32px rgba(29, 83, 159, 0.10); white-space: nowrap; }
.pill-nav a { color: #4a5670; text-decoration: none; font-size: 13.5px; font-weight: 600; display: inline-block; transition: color .2s, transform .2s; }
.pill-nav a:hover { color: #1d539f; }
.pill-nav .brand { color: #0f2b5e; font-weight: 800; }

/* hero */
.hero { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 0 24px; position: relative; }
.hero .ring { position: relative; width: 190px; height: 190px; margin-bottom: 32px; }
.hero .ring::before { content: ''; position: absolute; inset: -8px; border-radius: 50%;
  background: conic-gradient(#1d539f, #4d9fff, #9db8ff, #1d539f); animation: spin 6s linear infinite; }
.hero .ring img { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 6px solid #f2f6fd; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero h1 { font-size: clamp(42px, 7vw, 76px); font-weight: 800; letter-spacing: -0.03em;
  background: linear-gradient(90deg, #0f2b5e, #2d7dd2, #0f2b5e); background-size: 200%; -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  animation: shine 5s linear infinite; }
@keyframes shine { to { background-position: 200%; } }
.hero .sub { color: #64708a; margin-top: 14px; font-weight: 300; letter-spacing: 0.28em; text-transform: uppercase; font-size: 13px; }
.hero .scroll { position: absolute; bottom: 36px; color: #8b94a7; font-size: 12px; letter-spacing: 0.2em; animation: bob 2s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(8px); } }

/* MLH badge */
.mlh-badge { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px;
  background: rgba(255, 255, 255, 0.8); border: 1px solid rgba(29, 83, 159, 0.2); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-radius: 999px; padding: 8px 20px; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; color: #1a2233; box-shadow: 0 6px 20px rgba(29, 83, 159, 0.10); }
.mlh-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #2d7dd2; box-shadow: 0 0 12px #2d7dd2; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.4; } }
.mlh-badge .r { color: #1d539f; } .mlh-badge .y { color: #2d7dd2; } .mlh-badge .b { color: #4d9fff; }

/* layout */
main { max-width: 900px; margin: 0 auto; padding: 40px 24px 100px; }
main.page { padding-top: 140px; }
main section { margin: 110px 0; }
main.page section:first-child { margin-top: 0; }
.reveal { opacity: 0; transform: translateY(50px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }

.glass { background: rgba(255, 255, 255, 0.7); border: 1px solid rgba(29, 83, 159, 0.12); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-radius: 24px; padding: 40px 44px; box-shadow: 0 10px 40px rgba(29, 83, 159, 0.08); }
.label { font-size: 12px; letter-spacing: 0.24em; text-transform: uppercase; color: #1d539f; font-weight: 700; margin-bottom: 16px; }
h2 { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 24px; }
.about p { font-size: 18px; font-weight: 400; color: #3d4960; line-height: 2; }
.about strong { color: #1d539f; font-weight: 600; }

/* cursor glow on glass cards */
.glow-card { position: relative; }
.glow-card::after { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 50%), rgba(45, 125, 210, 0.12), transparent 60%); }
.glow-card:hover::after { opacity: 1; }

/* tech stack chips */
.skills { display: flex; flex-wrap: wrap; gap: 12px; }
.skills span { background: rgba(255, 255, 255, 0.8); border: 1px solid rgba(29, 83, 159, 0.18); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-radius: 999px; padding: 9px 20px; font-size: 13.5px; font-weight: 600; color: #3d4960; transition: all .25s; cursor: default; }
.skills span:hover { border-color: #2d7dd2; color: #1d539f; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(29, 83, 159, 0.18); }

/* featured project */
.project { position: relative; overflow: hidden; }
.project .tag { display: inline-block; background: rgba(29, 83, 159, 0.08); border: 1px solid rgba(29, 83, 159, 0.3); color: #1d539f;
  font-size: 11px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; border-radius: 999px; padding: 5px 14px; margin-bottom: 14px; }
.project h3 { font-size: 26px; font-weight: 800; margin-bottom: 10px;
  background: linear-gradient(90deg, #0f2b5e, #2d7dd2); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.project p { font-size: 15.5px; color: #4a5670; margin-bottom: 18px; }
.project .stack { display: flex; flex-wrap: wrap; gap: 8px; }
.project .stack span { font-size: 12px; font-weight: 600; color: #1d539f; background: rgba(29, 83, 159, 0.07); border: 1px solid rgba(29, 83, 159, 0.25); border-radius: 999px; padding: 4px 12px; }

/* experience / education cards */
.exp { display: grid; gap: 20px; }
.exp .card { background: rgba(255, 255, 255, 0.7); border: 1px solid rgba(29, 83, 159, 0.12); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-radius: 20px; padding: 28px 32px; position: relative; overflow: hidden; transition: transform .3s; }
.exp .card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, #4d9fff, transparent); transform: translateX(-100%); transition: transform .6s; }
.exp .card:hover::before { transform: translateX(100%); }
.exp .card:hover { transform: translateY(-5px); }
.exp h3 { font-size: 19px; font-weight: 700; }
.exp .meta { font-size: 13px; color: #1d539f; margin: 4px 0 12px; }
.exp li { font-size: 14.5px; color: #4a5670; margin: 8px 0 0 18px; }
.exp p { font-size: 14.5px; color: #4a5670; }

/* hobbies */
.hobby-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.hobby { position: relative; height: 220px; border-radius: 20px; overflow: hidden; box-shadow: 0 10px 30px rgba(29, 83, 159, 0.10); }
.hobby img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .8, .2, 1); }
.hobby:hover img { transform: scale(1.1) rotate(1deg); }
.hobby .ov { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(15, 43, 94, 0.85)); padding: 20px; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; }
.hobby h3 { font-size: 17px; font-weight: 700; }
.hobby p { font-size: 12.5px; color: rgba(255, 255, 255, 0.8); }

/* map */
#map { height: 440px; border-radius: 20px; border: 1px solid rgba(29, 83, 159, 0.15); box-shadow: 0 10px 40px rgba(29, 83, 159, 0.10); }
.leaflet-container { background: #e8eef8; }

/* contact */
.contact { text-align: center; }
.contact h2 { margin-bottom: 12px; }
.contact p { color: #4a5670; font-size: 16px; margin-bottom: 28px; }
.contact .btns { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
.contact a { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-size: 14.5px; font-weight: 700;
  border-radius: 999px; padding: 13px 30px; transition: all .25s; }
.contact a.primary { background: linear-gradient(90deg, #1d539f, #4d9fff); color: #fff; box-shadow: 0 8px 30px rgba(77, 159, 255, 0.35); }
.contact a.primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(77, 159, 255, 0.5); }
.contact a.ghost { background: rgba(255, 255, 255, 0.8); border: 1px solid rgba(29, 83, 159, 0.2); color: #1a2233; }
.contact a.ghost:hover { border-color: #2d7dd2; transform: translateY(-3px); }

/* timeline */
.timeline-form-card { margin-bottom: 34px; }
.timeline-form-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 18px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: #1d539f; letter-spacing: 0.05em; margin-bottom: 6px; }
.form-group input, .form-group textarea { width: 100%; font-family: 'Sora', sans-serif; font-size: 14.5px; color: #1a2233;
  background: rgba(255, 255, 255, 0.85); border: 1px solid rgba(29, 83, 159, 0.2); border-radius: 14px; padding: 12px 16px; transition: border-color .2s, box-shadow .2s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #2d7dd2; box-shadow: 0 0 0 3px rgba(45, 125, 210, 0.15); }
.form-group textarea { resize: vertical; }
.submit-btn { font-family: 'Sora', sans-serif; font-size: 14.5px; font-weight: 700; color: #fff; cursor: pointer; border: none;
  background: linear-gradient(90deg, #1d539f, #4d9fff); border-radius: 999px; padding: 13px 32px; box-shadow: 0 8px 30px rgba(77, 159, 255, 0.35); transition: all .25s; }
.submit-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(77, 159, 255, 0.5); }

.timeline-post { padding: 24px 28px; margin-bottom: 18px; border-radius: 20px; }
.post-header { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.post-avatar { width: 50px; height: 50px; border-radius: 50%; border: 2px solid rgba(29, 83, 159, 0.25); }
.post-name { font-size: 16px; font-weight: 700; }
.post-date { font-size: 12.5px; color: #8b94a7; }
.post-content { font-size: 15px; color: #3d4960; }

footer { text-align: center; padding: 60px; color: #8b94a7; font-size: 13px; }

@media (max-width: 640px) {
  .hobby-grid { grid-template-columns: 1fr; }
  .glass { padding: 28px 24px; }
  .pill-nav { gap: 16px; padding: 10px 20px; }
}