/* ============================================================
   Page sections — hero, about, skills, projects, education, contact.
   Emerald-on-near-black editorial theme.
   ============================================================ */

.section{padding:110px 0;position:relative;overflow:hidden}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:720px;margin-bottom:56px}
.section-head.is-centered{max-width:640px;margin-inline:auto;text-align:center}
.section-head.is-centered .pill-badge{margin-inline:auto}
.section-eyebrow{
  font-family:var(--font-mono);font-size:.82rem;color:var(--accent);
  text-transform:uppercase;letter-spacing:.12em;margin-bottom:.7rem;
}
.section-title{font-size:clamp(1.7rem,3.6vw,2.5rem)}
.section-sub{color:var(--text-dim);margin-top:.9rem;font-size:1.02rem}

/* ---------- shared editorial primitives ---------- */

/* Bold sans headline with italic-serif accent words. */
.display-heading{
  font-family:var(--font-display);
  font-size:clamp(1.85rem,4.2vw,2.9rem);
  font-weight:800;text-transform:uppercase;letter-spacing:-.015em;
  line-height:1.1;margin-bottom:1.4rem;
}
.display-heading em{
  display:inline-block;font-family:var(--font-serif);font-style:italic;
  font-weight:600;text-transform:none;letter-spacing:0;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  padding-right:.08em;
}

.pill-badge{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.35rem .9rem;border-radius:999px;margin-bottom:1.1rem;
  background:var(--accent-soft);border:1px solid var(--border-accent);
  color:var(--accent);font-size:.78rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.08em;
}

.link-arrow{
  display:inline-flex;align-items:center;gap:.5rem;margin-top:1.4rem;
  font-size:.84rem;font-weight:700;color:var(--accent);
  text-transform:uppercase;letter-spacing:.09em;
  border-bottom:1px solid transparent;padding-bottom:.2rem;
  transition:gap var(--dur-fast),border-color var(--dur-fast);
}
.link-arrow:hover{gap:.85rem;border-bottom-color:var(--accent)}

/* ============ HERO (POLISHED & REFINED AESTHETIC) ============ */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:calc(var(--nav-h) + 6px) 0 40px;overflow:hidden;
}
.hero-scene{z-index:0;opacity:.45}

/* Subtle, sophisticated ambient gradient glow */
.hero-glow{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(ellipse 60% 45% at 50% 0%,rgba(0,242,148,.14) 0%,rgba(16,185,129,.04) 38%,transparent 70%),
    radial-gradient(ellipse 50% 50% at 85% 30%,rgba(0,242,148,.06) 0%,transparent 65%),
    radial-gradient(ellipse 90% 70% at 50% 100%,var(--bg),transparent 60%);
}
/* Subtle, low-opacity technical grid (reduced by 30%) */
.hero-grid-lines{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.075;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:80px 80px;
  -webkit-mask-image:radial-gradient(ellipse 80% 75% at 50% 45%,#000 25%,transparent 85%);
  mask-image:radial-gradient(ellipse 80% 75% at 50% 45%,#000 25%,transparent 85%);
}

/* Far-left vertical rail (scroll arrow + social icons) */
.hero-rail{
  position:absolute;left:24px;top:50%;transform:translateY(-50%);z-index:5;
  display:flex;flex-direction:column;align-items:center;gap:1.1rem;
}
@media (max-width:1200px){
  .hero-rail{display:none!important}
}
.rail-indicator{display:flex;flex-direction:column;align-items:center;gap:5px}
.rail-line{width:1px;height:44px;background:linear-gradient(to bottom,rgba(255,255,255,.14),rgba(0,242,148,.6))}
.rail-arrow{font-size:.66rem;color:var(--accent);animation:arrowBob 2.2s ease-in-out infinite}
@keyframes arrowBob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}
.rail-socials{display:flex;flex-direction:column;gap:.5rem}
.rail-icon{
  width:28px;height:28px;border-radius:7px;
  background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.05);
  display:grid;place-items:center;color:rgba(255,255,255,.38);font-size:.74rem;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:all var(--dur-fast);
}
.rail-icon:hover{
  background:rgba(0,242,148,.10);border-color:rgba(0,242,148,.30);
  color:var(--accent);transform:translateY(-2px);
}

.hero-inner{
  position:relative;z-index:3;width:100%;
  max-width:var(--max-w);margin-inline:auto;padding-inline:var(--gutter);
  display:grid;grid-template-columns:1.10fr .90fr;gap:36px;align-items:center;
}
.hero-copy{min-width:0;margin-top:-38px;padding-left:46px}

.hero-title{
  font-family:var(--font-display);
  font-size:clamp(2.05rem,4.1vw,3.45rem);font-weight:800;
  line-height:1.16;letter-spacing:-.03em;margin-bottom:1.9rem;
}
.hero-title em{
  font-family:var(--font-serif);font-style:italic;font-weight:600;
  letter-spacing:0;
  background:linear-gradient(135deg,#ffffff 15%,#e6fcf5 60%,#00f294 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  padding-right:.08em;
}
.hero-title-inline{
  display:inline-flex;align-items:center;gap:1.85rem;flex-wrap:wrap;vertical-align:baseline;
  margin-top:.35rem;
}

/* 100% Success Rate inline badge */
.hero-success-pill{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.28rem .8rem .28rem .35rem;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  vertical-align:middle;box-shadow:0 8px 20px rgba(0,0,0,.35);
  margin-left:1.15rem;
}
.avatar-stack{display:flex;align-items:center}
.mini-avatar{
  width:24px;height:24px;border-radius:50%;
  border:2px solid var(--bg);display:grid;place-items:center;
  font-size:.62rem;color:#fff;margin-left:-6px;
}
.av-1{background:#ef4444;margin-left:0}
.av-2{background:#0ea5e9}
.av-3{background:#10b981}
.success-text{
  font-size:.72rem;font-weight:600;color:#fff;
  font-family:var(--font-body);letter-spacing:0;white-space:nowrap;
}

/* Headline figures */
.hero-statrow{display:flex;align-items:stretch;gap:2.2rem}
.hero-stat{display:grid;gap:.12rem}
.hero-stat + .hero-stat{padding-left:2.2rem;border-left:1px solid rgba(255,255,255,.12)}
.hero-stat-num{
  font-family:var(--font-display);font-size:2.15rem;font-weight:800;line-height:1.1;
  color:#fff;
}
.hero-stat-label{font-size:.76rem;color:var(--text-faint);letter-spacing:.02em}

/* ---------- portrait cut-out matching reference ---------- */
.hero-portrait-wrap{
  position:relative;display:flex;align-items:flex-end;justify-content:center;
  min-height:500px;padding-bottom:8px;
  margin-left:-9%;margin-top:-30px;
}
/* stylized code bracket SVG sitting directly behind the portrait */
.hero-code-bg{
  position:absolute;top:2%;left:50%;transform:translateX(-48%);
  width:min(570px,124%);aspect-ratio:540/380;
  pointer-events:none;user-select:none;z-index:1;
  display:flex;align-items:center;justify-content:center;
}
.code-bracket-svg{
  width:100%;height:100%;
  color:#08140f;stroke:#12281e;
  filter:drop-shadow(0 0 30px rgba(0,242,148,.14));
  transition:all var(--dur);
}
.hero-portrait-wrap:hover .code-bracket-svg{
  color:#0b1d15;stroke:#00f294;
  filter:drop-shadow(0 0 45px rgba(0,242,148,.26));
}

.portrait-halo{
  position:absolute;top:10%;left:50%;transform:translateX(-50%);
  width:82%;aspect-ratio:1;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(circle,rgba(0,242,148,.22) 0%,rgba(16,185,129,.06) 45%,transparent 72%);
  filter:blur(42px);
  animation:haloGlow 4.5s ease-in-out infinite alternate;
}
@keyframes haloGlow{
  0%{transform:translateX(-50%) scale(0.96);opacity:0.8}
  100%{transform:translateX(-50%) scale(1.06);opacity:1}
}

.hero-portrait{
  position:relative;z-index:2;
  width:min(446px,100%);height:auto;
  max-height:544px;
  object-fit:contain;object-position:bottom center;
  opacity:1;
  filter:drop-shadow(0 25px 50px rgba(0,0,0,.92)) contrast(1.04) brightness(1.02);
  transition:transform var(--dur-slow) var(--ease-out);
}
.hero-portrait-wrap:hover .hero-portrait{
  transform:scale(1.015);
}

/* glass bio card floating over the portrait's lower-left — fully visible */
.bio-card{
  position:absolute;z-index:4;left:-11%;bottom:9%;width:min(300px,82%);
  padding:1.15rem 1.25rem;border-radius:20px;
  background:rgba(10,20,16,.76);border:1px solid rgba(0,242,148,.24);
  backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);
  box-shadow:0 0 0 1px rgba(0,242,148,.10),0 26px 65px -16px rgba(0,0,0,.90),0 0 30px -6px rgba(0,242,148,.20);
  animation:cardFloat 5.5s ease-in-out infinite alternate;
}
@keyframes cardFloat{
  0%{transform:translateY(0)}
  100%{transform:translateY(-5px)}
}
.bio-card p{font-size:.82rem;line-height:1.6;color:rgba(255,255,255,.82);margin:0 0 .85rem}
.bio-card em{font-family:var(--font-serif);font-style:italic;color:#fff;font-weight:600}
.bio-card-footer{display:flex;align-items:center;justify-content:space-between;gap:.6rem}
.bio-cta{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.52rem 1.2rem;border-radius:999px;
  background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#d946ef 100%);
  color:#fff;font-size:.8rem;font-weight:700;
  box-shadow:0 4px 18px rgba(139,92,246,.45);
  transition:gap var(--dur-fast),transform var(--dur-fast),box-shadow var(--dur-fast);
}
.bio-cta:hover{gap:.75rem;transform:translateY(-2px);box-shadow:0 6px 24px rgba(139,92,246,.65)}
.bio-badge{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#fff;font-size:.82rem;
}

/* ---------- left social rail ---------- */
.social-rail{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);z-index:5;
  display:grid;justify-items:center;gap:.55rem;
}
.rail-line{width:1px;height:56px;background:linear-gradient(var(--accent),transparent)}
.rail-link{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--surface);border:1px solid var(--border);
  color:var(--text-faint);font-size:.82rem;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:color var(--dur-fast),border-color var(--dur-fast),transform var(--dur-fast);
}
.rail-link:hover{color:var(--accent);border-color:var(--border-accent);transform:translateX(3px)}

.scroll-hint{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:4;
  width:26px;height:42px;border:2px solid var(--border-strong);border-radius:14px;
  display:grid;place-items:start center;padding-top:7px;
}
.scroll-hint span{width:4px;height:8px;border-radius:2px;background:var(--accent);animation:wheel 1.6s ease-in-out infinite}
@keyframes wheel{0%,100%{transform:translateY(0);opacity:1}60%{transform:translateY(14px);opacity:0}}

/* ============ ABOUT ============ */
.about-section{overflow:hidden}
.about-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.about-text{min-width:0}
.about-text p{color:var(--text-dim);font-size:1rem}
.about-text strong{color:var(--text);font-weight:600}
.about-tags{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.4rem}
.tag{
  display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .9rem;border-radius:999px;
  background:var(--accent-soft);border:1px solid var(--border-accent);
  color:var(--text);font-size:.84rem;font-weight:500;
}
.tag i{color:var(--accent);font-size:.72rem}

.about-visual{display:grid;place-items:center;min-width:0}

/* ---------- orbital tech diagram ---------- */
.orbit-wrap{
  position:relative;width:min(430px,100%);aspect-ratio:1;
  display:grid;place-items:center;
}
.orbit-wrap::before{
  content:"";position:absolute;inset:8%;border-radius:50%;
  background:radial-gradient(circle,rgba(0,242,148,.10),transparent 68%);
}
.orbit-svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.orbit-ring{
  fill:none;stroke:rgba(255,255,255,.10);stroke-width:1;
  transform-origin:50% 50%;animation:orbitSpin 42s linear infinite;
}
.orbit-ring:nth-of-type(3){animation-direction:reverse;animation-duration:56s}
@keyframes orbitSpin{to{transform:rotate(360deg)}}
.orbit-wire{
  fill:none;stroke:url(#orbitWire);stroke-width:1.4;opacity:.55;
  stroke-dasharray:5 7;animation:wireFlow 2.4s linear infinite;
}
@keyframes wireFlow{to{stroke-dashoffset:-24}}

.orbit-hub{
  position:relative;z-index:3;
  display:grid;place-items:center;width:64px;height:64px;border-radius:18px;
  background:var(--bg-alt);border:1px solid var(--border-accent);
  color:var(--accent);font-size:1.3rem;
  box-shadow:0 0 34px rgba(0,242,148,.34);
}
.orbit-node{
  position:absolute;z-index:2;transform:translate(-50%,-50%);
  display:grid;place-items:center;width:46px;height:46px;border-radius:14px;
  background:rgba(14,20,18,.92);border:1px solid var(--border-strong);
  color:var(--text-dim);font-size:1rem;
  animation:nodePulse 4.6s ease-in-out infinite;
  transition:color var(--dur-fast),border-color var(--dur-fast);
}
html[data-theme="light"] .orbit-node{background:#fff}
.orbit-node:hover{color:var(--accent);border-color:var(--border-accent)}
@keyframes nodePulse{
  0%,100%{box-shadow:0 0 0 0 rgba(0,242,148,0)}
  50%{box-shadow:0 0 22px 0 rgba(0,242,148,.32);color:var(--accent)}
}

/* ---------- portrait + stats row ---------- */
.about-lower{
  display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:36px;
  align-items:end;margin-top:60px;
}
/* ---------- hanging rope avatar frame with drop animation ---------- */
.portrait-col{
  display:flex;justify-content:center;
}
.hanging-frame-wrap{
  position:relative;width:min(320px,100%);
  display:flex;flex-direction:column;align-items:center;
  transform-origin:50% 0%;
  opacity:0;
  transform:translateY(-140px) rotate(-18deg);
}
.hanging-frame-wrap.is-dropped{
  opacity:1;
  animation:ropeDropSwing 2.4s cubic-bezier(0.25, 1, 0.45, 1) forwards,
            ropeIdleSway 5s ease-in-out infinite 2.4s;
}

/* Wall pin/nail anchor */
.hanging-pin{
  position:relative;z-index:4;
  width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,#00f294 0%,#059669 100%);
  box-shadow:0 0 16px rgba(0,242,148,.75),0 3px 6px rgba(0,0,0,.6);
  border:2px solid #fff;
  margin-bottom:-6px;
}
.pin-cap{
  position:absolute;inset:2px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#fff 0%,#00f294 60%,#047857 100%);
}

/* Braided rope cable wires */
.hanging-rope-svg{
  width:100%;height:68px;
  overflow:visible;
  filter:drop-shadow(0 4px 10px rgba(0,242,148,.25));
  margin-bottom:-4px;
}

/* The frame containing the portrait */
.hanging-frame{
  position:relative;width:100%;
  border-radius:var(--radius-lg);
  box-shadow:0 18px 45px -10px rgba(0,0,0,.85),0 0 30px -4px rgba(0,242,148,.18);
  transition:transform var(--dur) var(--ease-out),box-shadow var(--dur);
}

/* Metallic clasps / hooks at top corners */
.frame-clasp{
  position:absolute;top:-6px;z-index:4;
  width:16px;height:12px;border-radius:4px;
  background:linear-gradient(to bottom,#00f294,#059669);
  border:1px solid rgba(255,255,255,.6);
  box-shadow:0 2px 8px rgba(0,0,0,.5);
}
.clasp-left{left:28px}
.clasp-right{right:28px}

.hanging-frame-wrap:hover .hanging-frame{
  transform:scale(1.02);
  box-shadow:0 24px 60px -12px rgba(0,0,0,.92),0 0 40px rgba(0,242,148,.32);
}

/* Keyframes: realistic pendulum drop with natural rope tension damping */
@keyframes ropeDropSwing{
  0%{
    transform:translateY(-140px) rotate(-22deg);
    opacity:0;
  }
  24%{
    transform:translateY(18px) rotate(16deg);
    opacity:1;
  }
  42%{
    transform:translateY(-6px) rotate(-11deg);
  }
  58%{
    transform:translateY(3px) rotate(7deg);
  }
  74%{
    transform:translateY(-1px) rotate(-4deg);
  }
  88%{
    transform:translateY(0px) rotate(2deg);
  }
  96%{
    transform:translateY(0px) rotate(-0.8deg);
  }
  100%{
    transform:translateY(0px) rotate(0deg);
  }
}

/* Keyframes: subtle continuous idle dangling sway */
@keyframes ropeIdleSway{
  0%,100%{
    transform:translateY(0px) rotate(0deg);
  }
  25%{
    transform:translateY(0px) rotate(1.2deg);
  }
  75%{
    transform:translateY(0px) rotate(-1.2deg);
  }
}

.portrait{
  position:relative;margin:0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border-strong);box-shadow:var(--shadow);
  background:var(--surface);aspect-ratio:4/5;
}
.portrait img{width:100%;height:100%;object-fit:cover;object-position:center 12%}
.portrait::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(to top,rgba(4,14,10,.88) 0%,rgba(4,14,10,.18) 40%,transparent 64%);
}
.portrait figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  display:grid;gap:.1rem;padding:1rem 1.1rem;
}
.portrait figcaption strong{font-family:var(--font-display);font-size:1rem;color:#fff}
.portrait figcaption span{font-size:.82rem;color:rgba(242,246,244,.78)}

.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.stat-card{padding:1.6rem 1.2rem;text-align:center}
.stat-num{
  display:block;font-family:var(--font-display);font-size:2.05rem;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.stat-label{font-size:.78rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em}

/* ============ SKILLS — MY TECH TOOLBOX ============ */
.skills-section{overflow:hidden;position:relative;isolation:isolate}
.skills-section::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse 60% 45% at 50% 0%,rgba(0,242,148,.13),transparent 70%);
}
/* Decoration only: faint, masked, and always behind the content. */
.skills-scene{
  opacity:.22;z-index:0;
  -webkit-mask-image:radial-gradient(ellipse 70% 62% at 50% 50%,#000 30%,transparent 78%);
  mask-image:radial-gradient(ellipse 70% 62% at 50% 50%,#000 30%,transparent 78%);
}
.skills-content{position:relative;z-index:2}

.toolbox-grid{
  display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-bottom:64px;
}
.toolbox-card{
  grid-column:span 2;
  display:flex;flex-direction:column;
  padding:1.5rem;border-radius:var(--radius-lg);
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color var(--dur),transform var(--dur) var(--ease-out),box-shadow var(--dur);
}
.toolbox-card.is-wide{grid-column:span 3}
.toolbox-card:hover{
  transform:translateY(-5px);border-color:var(--border-accent);
  box-shadow:0 26px 60px -28px rgba(0,242,148,.45);
}

/* mini node diagram */
.node-cluster{
  position:relative;display:flex;align-items:center;justify-content:center;gap:.7rem;
  min-height:96px;margin-bottom:1.2rem;
  border-radius:var(--radius);background:rgba(255,255,255,.022);
  border:1px solid var(--border);overflow:hidden;
}
html[data-theme="light"] .node-cluster{background:rgba(8,20,15,.03)}
.cluster-line{
  position:absolute;left:12%;right:12%;top:50%;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.4;
}
.cluster-node{
  position:relative;z-index:2;
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:var(--bg-alt);border:1px solid var(--border-strong);
  color:var(--text-dim);font-size:.98rem;
}
.cluster-node.is-lead{
  color:var(--accent);border-color:var(--border-accent);
  box-shadow:0 0 22px rgba(0,242,148,.3);
}

.toolbox-title{
  font-family:var(--font-serif);font-style:italic;font-weight:600;
  font-size:1.3rem;color:var(--accent);margin-bottom:.5rem;letter-spacing:0;
}
.toolbox-stack{font-size:.9rem;color:var(--text);margin:0 0 .35rem;font-weight:500}
.toolbox-note{font-size:.85rem;color:var(--text-faint);margin:0;font-style:italic}

/* detailed bars */
.proficiency{
  padding:2rem;border-radius:var(--radius-lg);
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.proficiency-title{
  font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;
  font-family:var(--font-mono);color:var(--text-faint);margin-bottom:1.6rem;
}
.proficiency-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px}
.skill-card-head{display:flex;align-items:center;gap:.7rem;margin-bottom:1rem}
.skill-card-head h4{font-size:1rem}
.skill-icon{
  display:grid;place-items:center;width:38px;height:38px;border-radius:11px;flex:none;
  background:var(--accent-soft);color:var(--accent);font-size:.95rem;
}

/* ============ PROJECTS ============ */
.project-toolbar{
  display:flex;flex-wrap:wrap;gap:1rem;
  justify-content:space-between;align-items:center;margin-bottom:32px;
}
.filter-group{display:flex;flex-wrap:wrap;gap:.5rem}
.filter-btn{
  padding:.5rem 1.05rem;border-radius:999px;cursor:pointer;
  background:var(--surface);border:1px solid var(--border);color:var(--text-dim);
  font-size:.87rem;font-weight:500;transition:all var(--dur-fast);
}
.filter-btn:hover{color:var(--text);border-color:var(--border-strong)}
.filter-btn.is-active{background:var(--grad);color:#04140d;border-color:transparent;font-weight:700}
.search-wrap{position:relative;flex:1;min-width:220px;max-width:320px}
.search-wrap i{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  color:var(--text-faint);font-size:.9rem;
}
.search-wrap input{
  width:100%;padding:.65rem 1rem .65rem 2.5rem;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);color:var(--text);
  font-family:var(--font-body);font-size:.9rem;
}
.search-wrap input::placeholder{color:var(--text-faint)}
.search-wrap input:focus{outline:none;border-color:var(--accent);background:var(--surface-2)}

.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px}
.project-card{
  padding:1.6rem;cursor:pointer;
  animation:cardIn .5s backwards var(--ease-out);
}
.project-card .tilt-inner{display:flex;flex-direction:column;gap:.9rem;height:100%}
@keyframes cardIn{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.pc-featured{position:absolute;top:1rem;right:1rem;color:var(--warn);font-size:.8rem;z-index:3}
.pc-top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}
.pc-icon{
  display:grid;place-items:center;width:48px;height:48px;border-radius:14px;flex:none;
  background:var(--accent-soft);color:var(--accent);font-size:1.25rem;
}
.pc-badge{
  padding:.28rem .7rem;border-radius:999px;white-space:nowrap;
  background:var(--surface-2);border:1px solid var(--border);color:var(--text-dim);
  font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;
}
.pc-title{font-size:1.16rem}
.pc-tagline{font-size:.92rem;color:var(--text-dim);margin:0;flex:1}
.pc-tech{display:flex;flex-wrap:wrap;gap:.4rem}
.pc-tech span{
  padding:.24rem .62rem;border-radius:7px;font-family:var(--font-mono);font-size:.74rem;
  background:var(--surface-2);border:1px solid var(--border);color:var(--text-faint);
}
.pc-foot{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:.3rem}
.pc-links{display:flex;gap:.5rem}
.pc-link{
  display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:var(--surface-2);border:1px solid var(--border);
  color:var(--text-dim);font-size:.85rem;
  transition:color var(--dur-fast),border-color var(--dur-fast);
}
.pc-link:hover{color:var(--accent);border-color:var(--border-accent)}
.pc-more{font-size:.84rem;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:.4rem}

.loading-state,.empty-state{
  grid-column:1/-1;text-align:center;color:var(--text-faint);
  padding:3rem 1rem;font-size:.95rem;
}
.loading-state .spinner{vertical-align:-3px;margin-right:.5rem;border-color:var(--border-strong);border-top-color:var(--accent)}

/* ============ EDUCATION ============ */
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(var(--accent),var(--accent-2),transparent);
}
.timeline-item{position:relative;margin-bottom:28px}
.timeline-dot{
  position:absolute;left:-33px;top:26px;width:16px;height:16px;border-radius:50%;
  background:var(--bg);border:3px solid var(--accent);box-shadow:0 0 0 5px var(--accent-soft);
}
.timeline-card{
  padding:1.7rem;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  transition:transform var(--dur-fast),border-color var(--dur-fast);
}
.timeline-card:hover{transform:translateX(6px);border-color:var(--border-accent)}
.timeline-top{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:space-between;align-items:baseline}
.timeline-top h3{font-size:1.14rem}
.timeline-date{
  font-family:var(--font-mono);font-size:.78rem;color:var(--accent);
  padding:.22rem .7rem;border-radius:999px;background:var(--accent-soft);white-space:nowrap;
}
.timeline-org{color:var(--text-dim);font-size:.95rem;margin:.5rem 0 .9rem;display:flex;align-items:center;gap:.5rem}
.timeline-org i{color:var(--accent)}
.timeline-list{display:grid;gap:.4rem;font-size:.94rem;color:var(--text-dim);margin-bottom:1rem}
.timeline-list li{position:relative;padding-left:1.1rem}
.timeline-list li::before{content:"▸";position:absolute;left:0;color:var(--accent)}
.timeline-list strong{color:var(--text)}
.course-chips{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{
  padding:.35rem .8rem;border-radius:8px;font-size:.8rem;
  background:var(--surface-2);border:1px solid var(--border);color:var(--text-dim);
}

/* ============ CONTACT ============ */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start}
.contact-info{display:grid;gap:.7rem;align-content:start}
.contact-row{
  display:flex;align-items:center;gap:.95rem;padding:1rem 1.1rem;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  transition:transform var(--dur-fast),border-color var(--dur-fast);
}
a.contact-row:hover{transform:translateX(5px);border-color:var(--border-accent)}
.contact-ico{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;flex:none;
  background:var(--accent-soft);color:var(--accent);
}
.contact-text{min-width:0}
.contact-k{display:block;font-size:.74rem;text-transform:uppercase;letter-spacing:.07em;color:var(--text-faint)}
.contact-v{display:block;font-size:.94rem;font-weight:500;word-break:break-word}
.contact-info .btn{margin-top:.6rem}

.contact-form{
  padding:2rem;border-radius:var(--radius-lg);
  background:var(--surface);border:1px solid var(--border);
  display:grid;gap:1.1rem;
}
.form-note{font-size:.87rem;color:var(--text-faint);margin:0;text-align:center;min-height:1.4em}
.form-note.is-success{color:var(--ok)}
.form-note.is-error{color:var(--danger)}
.form-note a{color:var(--accent);text-decoration:underline}

/* ============ FOOTER ============ */
.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding:2.4rem 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between}
.footer-brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;margin:0}
.footer-copy{margin:0;font-size:.85rem;color:var(--text-faint)}
.footer-links{display:flex;gap:1.2rem;font-size:.87rem}
.footer-links a{color:var(--text-dim);transition:color var(--dur-fast)}
.footer-links a:hover{color:var(--accent)}