/* =============================================
   THEMES — Deeper / Richer / Still Soft
   ============================================= */


:root[data-theme="midnight"] {
  --bg-1:#0e0a26; --bg-2:#140e32; --bg-3:#1a1240;
  --surface:rgba(35,25,70,0.6);
  --surface-hover:rgba(50,38,90,0.75);
  --text:#f0e6ff; --text-soft:#b8a8d8;
  --accent:#b388ff; --accent-2:#7c4dff; --accent-3:#9a6aff;
  --glow:rgba(179,136,255,0.4);
  --orb-a:rgba(106,63,255,0.35); --orb-b:rgba(179,136,255,0.3);
  --orb-c:rgba(42,26,90,0.5); --orb-d:rgba(124,77,255,0.25);
  --scroll-track:rgba(120,80,200,0.12);
  --scroll-thumb:linear-gradient(180deg,#b388ff,#7c4dff);
  --scroll-glow:rgba(179,136,255,0.6);
  --card-glow:rgba(179,136,255,0.12);
}
:root[data-theme="cyber"] {
  --bg-1:#05060a; --bg-2:#08091a; --bg-3:#0b0e20;
  --surface:rgba(12,18,40,0.7);
  --surface-hover:rgba(18,28,55,0.85);
  --text:#e6f7ff; --text-soft:#7a9ab8;
  --accent:#00e5ff; --accent-2:#b388ff; --accent-3:#00c8e0;
  --glow:rgba(0,229,255,0.4);
  --orb-a:rgba(0,229,255,0.25); --orb-b:rgba(179,136,255,0.2);
  --orb-c:rgba(0,180,220,0.15); --orb-d:rgba(0,200,255,0.2);
  --scroll-track:rgba(0,200,255,0.08);
  --scroll-thumb:linear-gradient(180deg,#00e5ff,#b388ff);
  --scroll-glow:rgba(0,229,255,0.6);
  --card-glow:rgba(0,229,255,0.1);
}

/* =============================================
   GLOBAL RESET
   ============================================= */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:linear-gradient(170deg,var(--bg-1),var(--bg-2),var(--bg-3));
  background-attachment:fixed;
  overflow-x:hidden;min-height:100vh;
  transition:background .8s ease,color .5s ease;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Fraunces',serif;font-weight:400}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#fff}

/* SCROLLBAR */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--scroll-track)}
::-webkit-scrollbar-thumb{background:var(--scroll-thumb);border-radius:10px;box-shadow:0 0 10px var(--scroll-glow)}
*{scrollbar-width:thin;scrollbar-color:var(--accent) var(--scroll-track)}

/* =============================================
   BACKGROUND ORBS
   ============================================= */
.bg-orbs{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(100px);transition:background 1s}
.orb-1{width:550px;height:550px;background:var(--orb-a);top:-12%;left:-10%;animation:orbF1 20s ease-in-out infinite}
.orb-2{width:450px;height:450px;background:var(--orb-b);bottom:-8%;right:-8%;animation:orbF2 25s ease-in-out infinite}
.orb-3{width:380px;height:380px;background:var(--orb-c);top:45%;left:55%;animation:orbF3 22s ease-in-out infinite}
.orb-4{width:320px;height:320px;background:var(--orb-d);top:15%;right:18%;animation:orbF4 28s ease-in-out infinite}
@keyframes orbF1{0%,100%{transform:translate(0,0)}50%{transform:translate(70px,90px)}}
@keyframes orbF2{0%,100%{transform:translate(0,0)}50%{transform:translate(-80px,-70px)}}
@keyframes orbF3{0%,100%{transform:translate(0,0)}50%{transform:translate(-50px,60px)}}
@keyframes orbF4{0%,100%{transform:translate(0,0)}50%{transform:translate(60px,-50px)}}

/* =============================================
   DECORATIONS
   ============================================= */
.decor-layer{position:fixed;inset:0;pointer-events:none;z-index:1;overflow:hidden}
.heart-deco{position:absolute;color:var(--accent);opacity:var(--op,.4);animation:floatH var(--dur,16s) ease-in-out infinite;animation-delay:var(--delay,0s);transition:color .5s}
@keyframes floatH{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-28px) scale(1.06)}}
.sparkle-deco{position:absolute;width:3px;height:3px;background:var(--accent-2);border-radius:50%;opacity:.4;animation:twinkle 3.5s ease-in-out infinite;transition:background .5s}
@keyframes twinkle{0%,100%{opacity:.15;transform:scale(1)}50%{opacity:.8;transform:scale(1.5)}}

/* =============================================
   HEADER
   ============================================= */
.site-header{
  position:fixed;top:0;left:0;right:0;
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 48px;z-index:100;
  backdrop-filter:blur(28px);
  background:linear-gradient(180deg,color-mix(in srgb,var(--bg-1) 50%,transparent),transparent);
  transition:all .5s;
}
.site-header.scrolled{padding:14px 48px;background:color-mix(in srgb,var(--bg-1) 80%,transparent)}

.logo{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-size:18px}
.logo-icon{color:var(--accent);display:flex;transition:color .5s}
.logo-text .dot{color:var(--accent);transition:color .5s}

.nav{display:flex;gap:28px;font-size:13px;font-weight:500}
.nav a{position:relative;color:var(--text-soft);transition:color .3s;letter-spacing:.5px}
.nav a:hover{color:var(--accent)}
.nav a::after{
  content:'';position:absolute;bottom:-6px;left:0;right:0;
  height:2px;background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .4s;
}
.nav a:hover::after{transform:scaleX(1)}

.controls{display:flex;align-items:center;gap:12px}
.theme-toggle,.mobile-menu-btn{
  width:36px;height:36px;border-radius:50%;border:none;
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .3s;
}
.theme-toggle:hover{transform:rotate(180deg);background:color-mix(in srgb,var(--accent) 22%,transparent)}
.mobile-menu-btn{display:none}

/* Mobile Nav */
.mobile-nav{
  position:fixed;top:0;left:0;right:0;bottom:0;z-index:99;
  background:color-mix(in srgb,var(--bg-1) 96%,transparent);
  backdrop-filter:blur(30px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  opacity:0;pointer-events:none;transition:opacity .4s;
}
.mobile-nav.open{opacity:1;pointer-events:all}
.mobile-nav a{font-family:'Fraunces',serif;font-size:28px;color:var(--text);transition:color .3s}
.mobile-nav a:hover{color:var(--accent)}

/* =============================================
   REVEAL
   ============================================= */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:translateY(0)}

/* =============================================
   HERO
   ============================================= */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  padding:140px 48px 80px;z-index:2;
}
.hero-content{max-width:800px;text-align:center}

.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 22px;border-radius:30px;
  background:color-mix(in srgb,var(--accent) 14%,transparent);
  color:var(--accent);font-size:12px;letter-spacing:2px;
  text-transform:uppercase;font-weight:500;margin-bottom:32px;
}
.hero-badge svg{opacity:.7}

.hero-title{
  font-size:clamp(56px,10vw,130px);line-height:.92;
  margin-bottom:32px;font-weight:300;letter-spacing:-3px;
}
.hero-line-1{display:block;font-style:italic;color:var(--accent);transition:color .5s}
.hero-line-2{display:block}

.hero-desc{
  font-size:17px;line-height:1.75;color:var(--text-soft);
  max-width:560px;margin:0 auto 44px;font-weight:300;
}

.hero-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:28px;font-size:13px;font-weight:500;
  transition:all .4s;cursor:pointer;letter-spacing:.3px;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 28px var(--glow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 36px var(--glow)}
.btn-ghost{background:color-mix(in srgb,var(--accent) 10%,transparent);color:var(--text)}
.btn-ghost:hover{background:color-mix(in srgb,var(--accent) 20%,transparent);transform:translateY(-3px)}

.scroll-hint{
  position:absolute;bottom:36px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--text-soft);z-index:2;
}
.scroll-line{width:1px;height:36px;background:linear-gradient(180deg,var(--accent),transparent);animation:scrollPulse 2s ease-in-out infinite}
@keyframes scrollPulse{0%,100%{transform:scaleY(.3);opacity:.5}50%{transform:scaleY(1);opacity:1}}

/* =============================================
   SECTIONS
   ============================================= */
.section{position:relative;padding:140px 48px;z-index:2}
.container{max-width:1200px;margin:0 auto}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:3px;text-transform:uppercase;
  color:var(--accent);margin-bottom:16px;font-weight:500;
}
.section-label svg{opacity:.7}
.section-title{
  font-size:clamp(34px,5vw,60px);line-height:1.1;
  margin-bottom:70px;font-weight:300;letter-spacing:-1.5px;max-width:750px;
}

/* =============================================
   ABOUT
   ============================================= */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:80px;align-items:start}
.about-text p{font-size:17px;line-height:1.8;color:var(--text-soft);margin-bottom:22px;font-weight:300}
.about-text p:first-child::first-letter{
  font-family:'Fraunces',serif;font-size:52px;float:left;
  line-height:.85;margin-right:10px;color:var(--accent);font-style:italic;
}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;align-content:start}
.about-tags span{
  padding:10px 18px;border-radius:20px;font-size:13px;font-weight:400;
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  color:var(--text);transition:all .3s;cursor:default;
}
.about-tags span:hover{background:color-mix(in srgb,var(--accent) 24%,transparent);transform:translateY(-2px)}

/* =============================================
   SKILLS — CARDS
   ============================================= */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

.skill-card{
  padding:32px;border-radius:22px;
  background:var(--surface);
  backdrop-filter:blur(20px);
  transition:all .5s cubic-bezier(.2,.7,.2,1);
  cursor:default;position:relative;overflow:hidden;
}
.skill-card::before{
  content:'';position:absolute;inset:0;border-radius:22px;padding:1px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 20%,transparent),transparent 60%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;opacity:.5;transition:opacity .4s;
}
.skill-card:hover{
  background:var(--surface-hover);
  transform:translateY(-4px);
  box-shadow:0 16px 40px var(--card-glow);
}
.skill-card:hover::before{opacity:1}

.skill-card-header{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.skill-card-icon{
  width:44px;height:44px;border-radius:13px;flex-shrink:0;
  background:color-mix(in srgb,var(--accent) 15%,transparent);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);transition:all .4s;
}
.skill-card:hover .skill-card-icon{background:color-mix(in srgb,var(--accent) 28%,transparent);transform:scale(1.05)}
.skill-card-header h3{
  font-size:13px;letter-spacing:1px;text-transform:uppercase;
  font-weight:600;font-family:'Inter',sans-serif;color:var(--text);
}

.skill-items{display:flex;flex-wrap:wrap;gap:8px}
.skill-items span{
  padding:8px 16px;border-radius:14px;font-size:13px;font-weight:400;
  background:color-mix(in srgb,var(--accent) 8%,transparent);
  color:var(--text-soft);transition:all .3s;
}
.skill-items span:hover{background:color-mix(in srgb,var(--accent) 18%,transparent);color:var(--text)}

/* =============================================
   PROJECT CARDS
   ============================================= */
.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

.project-card{
  padding:36px;border-radius:24px;
  background:var(--surface);
  backdrop-filter:blur(20px);
  transition:all .5s cubic-bezier(.2,.7,.2,1);
  cursor:default;position:relative;overflow:hidden;
}
.project-card::before{
  content:'';position:absolute;inset:0;border-radius:24px;padding:1px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 22%,transparent),transparent 60%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;opacity:.5;transition:opacity .4s;
}
.project-card:hover{
  background:var(--surface-hover);
  transform:translateY(-6px);
  box-shadow:0 20px 50px var(--card-glow);
}
.project-card:hover::before{opacity:1}

.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.card-icon{
  width:48px;height:48px;border-radius:14px;
  background:color-mix(in srgb,var(--accent) 14%,transparent);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);transition:all .4s;
}
.project-card:hover .card-icon{background:color-mix(in srgb,var(--accent) 25%,transparent);transform:scale(1.05)}
.card-number{font-family:'Fraunces',serif;font-size:32px;color:color-mix(in srgb,var(--accent) 18%,transparent);font-weight:300;font-style:italic}

.project-card h3{font-size:22px;margin-bottom:8px;font-weight:400;letter-spacing:-.5px}
.card-role{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--accent);font-weight:500;display:block;margin-bottom:14px}
.project-card p{font-size:14px;line-height:1.7;color:var(--text-soft);margin-bottom:20px;font-weight:300}
.card-tech{display:flex;gap:8px;flex-wrap:wrap}
.card-tech span{
  padding:5px 12px;border-radius:14px;font-size:11px;font-weight:500;
  background:color-mix(in srgb,var(--accent) 10%,transparent);
  color:var(--text-soft);letter-spacing:.3px;
}

/* =============================================
   TIMELINE
   ============================================= */
.timeline{list-style:none;position:relative;padding-left:50px}
.timeline::before{
  content:'';position:absolute;left:16px;top:14px;bottom:14px;
  width:1px;background:linear-gradient(180deg,var(--accent),color-mix(in srgb,var(--accent) 10%,transparent));
  transition:background .5s;
}
.timeline li{position:relative;padding:28px 0}
.t-dot{
  position:absolute;left:-50px;top:32px;
  width:32px;height:32px;border-radius:10px;
  background:color-mix(in srgb,var(--accent) 14%,transparent);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);box-shadow:0 0 14px var(--card-glow);transition:all .3s;
}
.timeline li:hover .t-dot{background:color-mix(in srgb,var(--accent) 28%,transparent);transform:scale(1.1)}
.timeline h4{font-size:20px;margin-bottom:8px;font-weight:400}
.timeline p{color:var(--text-soft);font-size:14px;line-height:1.65;max-width:580px;font-weight:300}

/* =============================================
   CONTACT
   ============================================= */
.contact{text-align:center}
.contact-sub{font-size:17px;color:var(--text-soft);margin-bottom:48px;font-weight:300}
.contact-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.contact-link-item{
  display:flex;align-items:center;gap:10px;
  padding:16px 28px;border-radius:20px;
  background:var(--surface);backdrop-filter:blur(20px);
  transition:all .4s;font-size:15px;font-weight:400;position:relative;
}
.contact-link-item::before{
  content:'';position:absolute;inset:0;border-radius:20px;padding:1px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 18%,transparent),transparent 60%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;opacity:.4;transition:opacity .3s;
}
.contact-link-item:hover{
  transform:translateY(-3px);background:var(--surface-hover);
  box-shadow:0 12px 30px var(--card-glow);
}
.contact-link-item:hover::before{opacity:1}
.contact-link-item svg:first-child{color:var(--accent)}
.contact-link-item svg:last-child{opacity:.3;transition:opacity .3s}
.contact-link-item:hover svg:last-child{opacity:1;color:var(--accent)}

/* =============================================
   FOOTER
   ============================================= */
.site-footer{padding:28px 48px;z-index:2;position:relative}
.footer-inner{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-soft);letter-spacing:.5px;
  border-top:1px solid color-mix(in srgb,var(--accent) 10%,transparent);
  padding-top:28px;
}
.footer-left{display:flex;align-items:center;gap:8px}
.footer-left svg{color:var(--accent)}
.footer-tag{font-style:italic;font-family:'Fraunces',serif}

/* =============================================
   THEME PICKER
   ============================================= */
.theme-picker{
  position:fixed;right:20px;top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;gap:10px;z-index:98;
  padding:12px 8px;border-radius:26px;
  background:var(--surface);backdrop-filter:blur(20px);
  box-shadow:0 8px 30px rgba(0,0,0,.15);transition:background .5s;
}
.theme-picker button{
  width:20px;height:20px;border-radius:50%;
  border:2px solid rgba(255,255,255,.2);cursor:pointer;
  transition:all .3s;position:relative;overflow:hidden;
}
.theme-picker button:hover{transform:scale(1.25)}
.theme-picker button span{display:block;width:100%;height:100%;border-radius:50%}
.theme-picker button[data-theme="sakura"] span{background:linear-gradient(135deg,#c9899e,#dda8f5)}
.theme-picker button[data-theme="lavender"] span{background:linear-gradient(135deg,#6e6a9e,#8ec8ff)}
.theme-picker button[data-theme="peach"] span{background:linear-gradient(135deg,#b88a72,#ffd4a8)}
.theme-picker button[data-theme="midnight"] span{background:linear-gradient(135deg,#1a0f3a,#b388ff)}
.theme-picker button[data-theme="cyber"] span{background:linear-gradient(135deg,#0a0d18,#00e5ff)}

/* =============================================
   RESPONSIVE
   ============================================= */
@media(max-width:1024px){
  .skills-grid{grid-template-columns:repeat(2,1fr)}
  .project-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .site-header{padding:16px 24px}
  .site-header.scrolled{padding:12px 24px}
  .nav{display:none}
  .mobile-menu-btn{display:flex}
  .section{padding:100px 24px}
  .hero{padding:120px 24px 80px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .skills-grid{grid-template-columns:1fr}
  .project-grid{grid-template-columns:1fr}
  .theme-picker{right:12px;padding:10px 6px}
  .theme-picker button{width:16px;height:16px}
  .contact-links{flex-direction:column;align-items:center}
  .footer-inner{flex-direction:column;gap:12px;text-align:center}
}
@media(max-width:500px){
  .hero-buttons{flex-direction:column;align-items:stretch}
  .btn-primary,.btn-ghost{justify-content:center}
  .hero-title{letter-spacing:-1px}
}