/* ============================================================
   STYLE.CSS — Alex Rivera Student Profile
   Aesthetic: Editorial / Dark-first / Syne + Instrument Sans
   ============================================================ */

/* ── Variables ── */
:root {
  --bg:          #f4f1eb;
  --bg2:         #ede9e0;
  --surface:     #ffffff;
  --text:        #18180f;
  --muted:       #7a7870;
  --border:      rgba(0,0,0,.1);
  --accent:      #c94a20;
  --accent2:     #1a5fb4;
  --accent-glow: rgba(201,74,32,.18);
  --sidebar-w:   68px;
  --radius:      16px;
  --ease:        cubic-bezier(.4,0,.2,1);
  --dur:         .35s;
}
body.dark {
  --bg:          #111009;
  --bg2:         #1a1812;
  --surface:     #1f1d15;
  --text:        #eee9da;
  --muted:       #7a7870;
  --border:      rgba(255,255,255,.09);
  --accent-glow: rgba(201,74,32,.25);
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Instrument Sans',sans-serif;
  background:var(--bg);
  color:var(--text);
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{cursor:pointer;border:none;background:none;font-family:inherit}
ul,ol{list-style:none}

/* ── Typography ── */
h1,h2,h3,h4{font-family:'Syne',sans-serif;line-height:1.1;letter-spacing:-.025em}
h2{font-size:clamp(2rem,4vw,3rem);font-weight:800}
h3{font-size:1.35rem;font-weight:700}
h4{font-size:1.05rem;font-weight:700}
p{line-height:1.75;color:var(--muted)}
strong{color:var(--text);font-weight:600}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--text);
  display:flex;flex-direction:column;align-items:center;
  padding:24px 0 20px;
  z-index:200;
  gap:32px;
}
.sidebar-logo{
  font-family:'Syne',sans-serif;font-weight:800;font-size:.9rem;
  color:var(--bg);letter-spacing:.08em;
  background:var(--accent);
  width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
}
.sidebar-links{display:flex;flex-direction:column;gap:6px;flex:1}
.nav-link{
  display:flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  color:rgba(255,255,255,.35);font-size:1.1rem;
  position:relative;
  transition:background var(--dur),color var(--dur);
}
.nav-link:hover,.nav-link.active{
  background:rgba(255,255,255,.1);color:#fff;
}
.nav-link.active::before{
  content:'';position:absolute;left:-1px;top:50%;transform:translateY(-50%);
  height:20px;width:3px;background:var(--accent);border-radius:0 2px 2px 0;
}
/* Tooltip */
.nav-link::after{
  content:attr(data-label);
  position:absolute;left:calc(100% + 12px);
  background:var(--text);color:var(--bg);
  font-family:'Syne',sans-serif;font-size:.72rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;
  padding:5px 10px;border-radius:6px;
  white-space:nowrap;pointer-events:none;
  opacity:0;transform:translateX(-6px);
  transition:opacity .2s,transform .2s;
}
.nav-link:hover::after{opacity:1;transform:translateX(0)}

.theme-btn{
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.15);
  color:rgba(255,255,255,.5);font-size:1.1rem;
  display:flex;align-items:center;justify-content:center;
  transition:background var(--dur),color var(--dur),transform .2s;
}
.theme-btn:hover{background:rgba(255,255,255,.1);color:#fff;transform:rotate(30deg)}

/* ============================================================
   PAGE WRAP
   ============================================================ */
.page-wrap{margin-left:var(--sidebar-w)}

/* ============================================================
   TOPBAR (mobile only)
   ============================================================ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;z-index:300;
  background:var(--text);color:var(--bg);
  height:52px;padding:0 18px;
  align-items:center;justify-content:space-between;
}
.mob-brand{font-family:'Syne',sans-serif;font-weight:800;font-size:1rem}
.hamburger{background:none;border:none;color:#fff;font-size:1.4rem;cursor:pointer}

.mobile-menu{
  display:none;position:fixed;top:52px;left:0;right:0;z-index:299;
  background:var(--surface);border-bottom:1px solid var(--border);
  flex-direction:column;padding:12px 0;
}
.mobile-menu.open{display:flex}
.mobile-menu a,.mobile-menu button{
  padding:13px 24px;font-family:'Syne',sans-serif;font-weight:600;font-size:.95rem;
  color:var(--text);background:none;border:none;text-align:left;
  transition:background var(--dur);
}
.mobile-menu a:hover,.mobile-menu button:hover{background:var(--bg2)}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-accent{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'Syne',sans-serif;font-weight:700;font-size:.85rem;
  letter-spacing:.04em;
  background:var(--accent);color:#fff;
  padding:13px 28px;border-radius:100px;
  transition:transform var(--dur),box-shadow var(--dur),filter var(--dur);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 30px var(--accent-glow);filter:brightness(1.08)}
.btn-accent:active{transform:scale(.97)}
.btn-accent.sm{padding:10px 20px;font-size:.8rem}

.btn-ghost{
  display:inline-flex;align-items:center;
  font-family:'Syne',sans-serif;font-weight:700;font-size:.85rem;
  letter-spacing:.04em;
  border:1.5px solid rgba(255,255,255,.3);color:rgba(255,255,255,.8);
  padding:12px 26px;border-radius:100px;
  transition:border-color var(--dur),color var(--dur),background var(--dur);
}
.btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;
  min-height:100vh;
  background:var(--text);
  display:flex;flex-direction:column;
  justify-content:center;
  padding:100px 6vw 60px;
  overflow:hidden;
}
/* Grid bg */
.hero-grid-bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:60px 60px;
  pointer-events:none;
}
/* Orbs */
.orb{position:absolute;border-radius:50%;pointer-events:none;filter:blur(80px)}
.orb1{width:500px;height:500px;top:-100px;right:-80px;background:rgba(201,74,32,.2)}
.orb2{width:350px;height:350px;bottom:-80px;left:10%;background:rgba(26,95,180,.15)}
.orb3{width:200px;height:200px;top:40%;right:30%;background:rgba(201,74,32,.1)}

.hero-inner{position:relative;z-index:1;max-width:800px}

.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Syne',sans-serif;font-size:.75rem;font-weight:700;
  letter-spacing:.15em;text-transform:uppercase;
  color:rgba(255,255,255,.55);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);
  padding:7px 16px;border-radius:100px;
  margin-bottom:28px;
}
.pulse-dot{
  width:7px;height:7px;border-radius:50%;background:#4ade80;
  box-shadow:0 0 0 0 rgba(74,222,128,.5);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(74,222,128,.5)}
  70%{box-shadow:0 0 0 8px rgba(74,222,128,0)}
  100%{box-shadow:0 0 0 0 rgba(74,222,128,0)}
}

.hero-name{
  font-size:clamp(4rem,12vw,9rem);
  font-weight:800;
  color:#fff;
  line-height:.95;
  margin-bottom:24px;
}
.hero-name .name-line{display:block}
.accent-word{color:var(--accent)}

.hero-tagline{
  font-size:clamp(1rem,2vw,1.25rem);
  color:rgba(255,255,255,.5);
  margin-bottom:40px;
  font-weight:300;font-style:italic;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}

.greet-msg{
  font-family:'Syne',sans-serif;font-weight:700;font-size:1rem;
  color:var(--accent);
  min-height:1.5em;opacity:0;transform:translateY(6px);
  transition:opacity .4s,transform .4s;
}
.greet-msg.show{opacity:1;transform:translateY(0)}

/* Pulse button animation */
.pulse-btn{animation:btn-pulse 3s infinite}
@keyframes btn-pulse{
  0%,100%{box-shadow:0 0 0 0 var(--accent-glow)}
  50%{box-shadow:0 0 0 12px rgba(201,74,32,0)}
}

.hero-stats{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:0;
  margin-top:60px;
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:32px;
  flex-wrap:wrap;gap:0;
}
.hs-item{display:flex;flex-direction:column;gap:4px;padding:0 32px 0 0}
.hs-val{
  font-family:'Syne',sans-serif;font-size:2rem;font-weight:800;color:#fff;
  line-height:1;
}
.hs-label{font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.35)}
.hs-sep{width:1px;height:40px;background:rgba(255,255,255,.12);margin-right:32px}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{padding:90px 6vw;background:var(--surface);transition:background var(--dur)}
.section.alt{background:var(--bg2)}
.container{max-width:1000px;margin:0 auto}

.sec-head{margin-bottom:48px}
.eyebrow{
  display:inline-block;
  font-family:'Syne',sans-serif;font-size:.72rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);
  background:rgba(201,74,32,.1);
  padding:4px 12px;border-radius:100px;
  margin-bottom:12px;
}
.sub-head{font-size:1.1rem;font-weight:700;margin:48px 0 24px;color:var(--text)}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid{
  display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start;
}
.about-card{
  background:var(--bg2);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;align-items:center;gap:20px;
  border:1px solid var(--border);
}
.avatar-ring{
  width:140px;height:140px;border-radius:50%;
  border:3px solid var(--accent);
  padding:3px;background:var(--surface);
  overflow:hidden;
}
.avatar{width:100%;height:100%;object-fit:cover;border-radius:50%}
.about-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chip{
  font-size:.75rem;font-weight:500;
  background:var(--surface);border:1px solid var(--border);
  padding:5px 10px;border-radius:100px;color:var(--muted);
  white-space:nowrap;
}
.social-row{display:flex;gap:10px;width:100%}
.soc-btn{
  flex:1;text-align:center;
  font-family:'Syne',sans-serif;font-size:.75rem;font-weight:700;
  letter-spacing:.06em;
  border:1.5px solid var(--border);border-radius:100px;
  padding:8px 0;color:var(--text);
  transition:border-color var(--dur),background var(--dur),color var(--dur);
}
.soc-btn:hover{border-color:var(--accent);background:var(--accent);color:#fff}

.about-text p{margin-bottom:16px}
.hobbies{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.htag{
  font-size:.8rem;font-weight:500;
  background:var(--bg2);border:1px solid var(--border);
  padding:6px 14px;border-radius:100px;color:var(--text);
  transition:background var(--dur),border-color var(--dur),color var(--dur),transform .2s;
}
.htag:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:scale(1.05)}

/* ── Skills ── */
.skills-block{margin-top:56px}
.skills-grid{display:flex;flex-direction:column;gap:18px}
.skill-row{
  display:grid;grid-template-columns:160px 1fr 44px;
  align-items:center;gap:16px;
}
.sk-name{font-size:.88rem;font-weight:600;color:var(--text)}
.sk-track{
  height:7px;background:var(--bg2);border-radius:100px;overflow:hidden;
}
.sk-fill{
  height:100%;width:0;border-radius:100px;
  background:linear-gradient(90deg,var(--accent),#e8693a);
  transition:width 1.2s cubic-bezier(.22,1,.36,1);
}
.sk-pct{font-size:.78rem;font-weight:700;color:var(--muted);text-align:right}

/* ============================================================
   SUBJECTS
   ============================================================ */
.subject-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:16px;margin-bottom:28px;
}
.sc{
  background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:24px 16px 18px;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  position:relative;overflow:hidden;
  transition:border-color var(--dur),transform .2s,box-shadow .2s;
  cursor:default;
}
.sc::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--accent),transparent);
  opacity:0;transition:opacity var(--dur);
}
.sc:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 12px 32px var(--accent-glow)}
.sc:hover::before{opacity:.06}
.sc-top{width:52px;height:52px;border-radius:14px;background:var(--bg2);display:flex;align-items:center;justify-content:center;position:relative}
.sc-emoji{font-size:1.5rem}
.sc-name{font-size:.82rem;font-weight:600;color:var(--text);text-align:center;line-height:1.3}
.sc-del{
  position:absolute;top:8px;right:8px;
  width:22px;height:22px;border-radius:50%;
  background:var(--bg2);color:var(--muted);font-size:.85rem;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .2s,background .2s,color .2s;
}
.sc:hover .sc-del{opacity:1}
.sc-del:hover{background:var(--accent);color:#fff}

.add-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.add-input{
  flex:1;min-width:220px;
  padding:12px 18px;
  border:1.5px solid var(--border);
  border-radius:100px;
  background:var(--surface);color:var(--text);
  font-family:'Instrument Sans',sans-serif;font-size:.9rem;
  outline:none;
  transition:border-color var(--dur),box-shadow var(--dur);
}
.add-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.add-input::placeholder{color:var(--muted)}

/* ============================================================
   MARKS
   ============================================================ */
.marks-layout{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:start}

/* Donut */
.donut-col{display:flex;flex-direction:column;align-items:center;gap:24px}
.donut-wrap{position:relative;width:180px;height:180px}
.donut-svg{width:100%;height:100%;transform:rotate(-90deg)}
.d-bg{fill:none;stroke:var(--bg2);stroke-width:14}
.d-ring{
  fill:none;stroke:var(--accent);stroke-width:14;
  stroke-linecap:round;
  stroke-dasharray:0 440;
  transition:stroke-dasharray 1.4s cubic-bezier(.22,1,.36,1);
}
.donut-center{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
}
.d-val{font-family:'Syne',sans-serif;font-size:2rem;font-weight:800;color:var(--text);line-height:1}
.d-lbl{font-size:.72rem;color:var(--muted);margin-top:2px}

.grade-key{display:flex;flex-direction:column;gap:8px;width:100%}
.gk-row{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--muted)}
.gk-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.gk-dot.ap{background:var(--accent)}
.gk-dot.a{background:#f59e0b}
.gk-dot.b{background:#3b82f6}

/* Table */
.marks-table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.marks-table{width:100%;border-collapse:collapse;font-size:.9rem}
.marks-table thead tr{background:var(--text)}
.marks-table th{
  padding:14px 16px;
  font-family:'Syne',sans-serif;font-weight:700;font-size:.72rem;
  letter-spacing:.1em;text-transform:uppercase;
  color:rgba(255,255,255,.55);text-align:left;
}
body.dark .marks-table thead tr{background:var(--bg2)}
body.dark .marks-table th{color:var(--muted)}
.marks-table td{padding:14px 16px;border-bottom:1px solid var(--border);color:var(--text);transition:background var(--dur)}
.marks-table tbody tr:last-child td{border-bottom:none}
.marks-table tbody tr:hover td{background:rgba(201,74,32,.04)}
.marks-table tfoot td{
  padding:14px 16px;border-top:2px solid var(--border);
  background:var(--bg2);color:var(--accent);font-weight:700;
}

.gb{
  display:inline-block;padding:3px 10px;border-radius:100px;
  font-family:'Syne',sans-serif;font-size:.72rem;font-weight:700;
}
.gb.ap{background:rgba(201,74,32,.12);color:var(--accent)}
.gb.a{background:rgba(245,158,11,.12);color:#b45309}
.gb.b{background:rgba(59,130,246,.12);color:#1d4ed8}
body.dark .gb.a{color:#fbbf24}
body.dark .gb.b{color:#60a5fa}

.mb{width:100%;height:5px;background:var(--bg2);border-radius:100px;overflow:hidden}
.mf{height:100%;background:linear-gradient(90deg,var(--accent),#e8693a);border-radius:100px}

/* Fav link */
.fav-block{margin-top:48px}
.fav-link{
  display:inline-flex;align-items:center;gap:18px;
  background:var(--bg2);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:20px 24px;
  color:var(--text);
  max-width:460px;
  transition:border-color var(--dur),transform .2s,box-shadow .2s;
}
.fav-link:hover{border-color:var(--accent2);transform:translateY(-3px);box-shadow:0 10px 30px rgba(26,95,180,.15)}
.fav-logo{
  font-family:'Syne',sans-serif;font-weight:800;font-size:.85rem;
  background:var(--accent2);color:#fff;
  width:44px;height:44px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.fav-link div{display:flex;flex-direction:column;gap:3px}
.fav-link strong{font-size:.95rem}
.fav-link small{font-size:.78rem;color:var(--muted)}
.fav-arrow{margin-left:auto;font-size:1.2rem;color:var(--muted);transition:transform .2s}
.fav-link:hover .fav-arrow{transform:translateX(5px);color:var(--accent2)}

/* ============================================================
   GOALS
   ============================================================ */
.goals-list{display:flex;flex-direction:column;gap:20px}
.goal-card{
  display:grid;grid-template-columns:64px 1fr;gap:24px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  transition:border-color var(--dur),transform .2s,box-shadow .2s;
}
.goal-card:hover{border-color:var(--accent);transform:translateX(6px);box-shadow:0 4px 24px var(--accent-glow)}
.gc-num{
  font-family:'Syne',sans-serif;font-size:1.8rem;font-weight:800;
  color:var(--accent);opacity:.25;line-height:1;
}
.gc-body h4{margin-bottom:8px;font-size:1rem}
.gc-body p{font-size:.88rem;margin-bottom:16px}

.status-tag{
  display:inline-flex;padding:4px 12px;border-radius:100px;
  font-family:'Syne',sans-serif;font-size:.7rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;
}
.status-tag.inprog{background:rgba(201,74,32,.12);color:var(--accent)}
.status-tag.planned{background:rgba(26,95,180,.1);color:var(--accent2)}
.status-tag.done{background:rgba(22,163,74,.1);color:#15803d}
body.dark .status-tag.done{color:#4ade80}
body.dark .status-tag.planned{color:#60a5fa}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:48px;align-items:start}
.contact-info p{margin-bottom:28px}
.cinfo-rows{display:flex;flex-direction:column;gap:14px}
.cinfo-row{display:flex;align-items:center;gap:14px;font-size:.9rem;color:var(--muted)}
.ci-icon{
  width:36px;height:36px;border-radius:10px;
  background:var(--bg2);display:flex;align-items:center;justify-content:center;
  font-size:1rem;flex-shrink:0;
}

.contact-form{display:flex;flex-direction:column;gap:18px}
.field-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fg{display:flex;flex-direction:column;gap:6px}
.fg label{
  font-family:'Syne',sans-serif;font-size:.72rem;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
}
.fg input,.fg textarea{
  padding:12px 16px;
  border:1.5px solid var(--border);border-radius:12px;
  background:var(--surface);color:var(--text);
  font-family:'Instrument Sans',sans-serif;font-size:.9rem;
  outline:none;resize:vertical;
  transition:border-color var(--dur),box-shadow var(--dur),background var(--dur);
}
.fg input:focus,.fg textarea:focus{
  border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);
}
.fg input::placeholder,.fg textarea::placeholder{color:var(--muted)}

.form-row-btm{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-msg{
  font-size:.85rem;font-weight:500;min-height:1.2em;
  opacity:0;transition:opacity .4s;border-radius:8px;padding:8px 14px;
}
.form-msg.show{opacity:1}
.form-msg.err{background:rgba(220,38,38,.08);color:#dc2626}
.form-msg.ok{background:rgba(22,163,74,.08);color:#15803d}
body.dark .form-msg.err{color:#f87171}
body.dark .form-msg.ok{color:#4ade80}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{
  background:var(--text);padding:32px 6vw;
  transition:background var(--dur);
}
.footer-inner{
  max-width:1000px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.footer p{font-size:.85rem;color:rgba(255,255,255,.4)}
.footer strong{color:var(--accent)}
.back-top{
  font-family:'Syne',sans-serif;font-size:.8rem;font-weight:700;
  color:rgba(255,255,255,.3);letter-spacing:.08em;
  transition:color .2s;
}
.back-top:hover{color:#fff}

/* ============================================================
   FAB
   ============================================================ */
.fab{
  position:fixed;bottom:28px;right:28px;z-index:500;
  width:48px;height:48px;border-radius:50%;
  background:var(--accent);color:#fff;
  font-size:1.1rem;font-weight:700;
  box-shadow:0 4px 20px var(--accent-glow);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s,transform .3s,box-shadow .2s;
}
.fab.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.fab:hover{box-shadow:0 8px 28px var(--accent-glow);transform:translateY(-2px)}

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
.reveal.visible{opacity:1;transform:translateY(0)}
.d1{transition-delay:.1s}
.d2{transition-delay:.18s}
.d3{transition-delay:.26s}
.d4{transition-delay:.34s}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:900px){
  :root{--sidebar-w:0px}
  .sidebar{display:none}
  .topbar{display:flex}
  .page-wrap{margin-left:0;padding-top:52px}
  .hero{padding-top:80px}
  .about-grid{grid-template-columns:1fr}
  .about-card{flex-direction:row;align-items:center;flex-wrap:wrap}
  .marks-layout{grid-template-columns:1fr}
  .donut-col{flex-direction:row;justify-content:flex-start}
  .contact-grid{grid-template-columns:1fr}
  .field-pair{grid-template-columns:1fr}
}

@media(max-width:560px){
  .hero-name{font-size:3.5rem}
  .subject-grid{grid-template-columns:repeat(2,1fr)}
  .skill-row{grid-template-columns:130px 1fr 40px}
  .goal-card{grid-template-columns:1fr}
  .gc-num{font-size:1.2rem}
}

/* ── Shake animation ── */
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-6px)}
  40%{transform:translateX(6px)}
  60%{transform:translateX(-4px)}
  80%{transform:translateX(4px)}
}