/* ══ RESET ══ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}

/* ══ VARIABLES ══ */
:root{
  --bg:#06060f;
  --bg2:#0e0e1a;
  --surface:rgba(255,255,255,0.05);
  --surface2:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.09);
  --border2:rgba(255,255,255,0.16);
  --text:#f0f0ff;
  --text2:#9090b0;
  --text3:#5a5a7a;
  --accent:#7c6cfc;
  --accent2:#a78bfa;
  --accent3:#c4b5fd;
  --teal:#2dd4bf;
  --gold:#fbbf24;
  --green:#34d399;
  --red:#f87171;
  --pink:#f472b6;
  --glow:rgba(124,108,252,0.22);
  --radius:16px;
  --font:'Poppins',sans-serif;
  --mono:'JetBrains Mono',monospace;
}
[data-theme="light"]{
  --bg:#f2f2fa;
  --bg2:#e8e8f4;
  --surface:rgba(255,255,255,0.75);
  --surface2:rgba(255,255,255,0.95);
  --border:rgba(0,0,0,0.07);
  --border2:rgba(0,0,0,0.13);
  --text:#18182e;
  --text2:#4a4a6a;
  --text3:#9090b0;
  --glow:rgba(124,108,252,0.1);
}

/* ══ BODY ══ */
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
  transition:background .4s,color .4s;
  display:flex;
  flex-direction:column;
}

/* ══ PARTICLES ══ */
#pcvs{
  position:fixed;top:0;left:0;width:100%;height:100%;
  pointer-events:none;z-index:0;opacity:.5;
}
#cglow{
  position:fixed;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,108,252,.07) 0%,transparent 70%);
  pointer-events:none;z-index:0;transform:translate(-50%,-50%);
  transition:opacity .3s;
}

/* ══ HEADER — pinned at TOP, no gap ══ */
header{
  position:sticky;
  top:0;
  z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 40px;
  background:var(--surface);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border-bottom:1px solid var(--border);
  /* NO margin, NO transform that could push it down */
}
.logo{display:flex;align-items:center;gap:12px;cursor:pointer;text-decoration:none;}
.logo-icon{
  width:40px;height:40px;
  background:linear-gradient(135deg,var(--accent),var(--teal));
  border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;
  box-shadow:0 0 20px var(--glow);
  animation:iconPulse 3s ease-in-out infinite;
  transition:transform .25s;
  flex-shrink:0;
}
.logo-icon:hover{transform:rotate(12deg) scale(1.08);}
@keyframes iconPulse{0%,100%{box-shadow:0 0 16px var(--glow);}50%{box-shadow:0 0 36px var(--glow),0 0 56px rgba(45,212,191,.12);}}
.logo-text h1{
  font-size:1.35rem;font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(135deg,var(--accent3),var(--teal));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.logo-text small{font-size:.58rem;color:var(--text3);letter-spacing:.12em;font-weight:500;display:block;}
.hdr-right{display:flex;gap:10px;align-items:center;}
.mode-sel{
  background:var(--surface2);border:1px solid var(--border2);
  border-radius:10px;color:var(--text);
  font-family:var(--font);font-size:.8rem;font-weight:500;
  padding:8px 14px;cursor:pointer;outline:none;
  transition:border-color .2s;
}
.mode-sel:hover{border-color:var(--accent);}
.theme-btn{
  background:var(--surface2);border:1px solid var(--border2);
  color:var(--text);border-radius:10px;
  padding:8px 14px;cursor:pointer;font-size:1rem;
  transition:all .25s;
}
.theme-btn:hover{border-color:var(--accent);transform:scale(1.05);}

/* ══ MAIN — directly after header ══ */
main{
  position:relative;z-index:1;
  flex:1;
  max-width:1200px;width:100%;
  margin:0 auto;
  padding:28px 24px 48px;
}

/* ══ HERO ══ */
.hero{text-align:center;margin-bottom:28px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,rgba(124,108,252,.14),rgba(45,212,191,.08));
  border:1px solid rgba(124,108,252,.28);
  border-radius:20px;padding:5px 14px;
  font-size:.7rem;font-weight:600;letter-spacing:.1em;
  color:var(--accent3);margin-bottom:12px;
  animation:badgePulse 2.5s ease-in-out infinite;
}
@keyframes badgePulse{0%,100%{border-color:rgba(124,108,252,.28);}50%{border-color:rgba(124,108,252,.55);}}
.hero h2{
  font-size:clamp(1.8rem,4vw,3rem);font-weight:800;letter-spacing:-.04em;
  background:linear-gradient(135deg,var(--text) 25%,var(--accent2) 65%,var(--teal));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  line-height:1.1;margin-bottom:10px;
}
.hero p{color:var(--text2);font-size:.9rem;font-weight:400;}

/* ══ SECTION TITLE ══ */
.sec-title{
  font-size:.7rem;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;color:var(--text3);
  display:flex;align-items:center;gap:14px;
  margin:28px 0 16px;
}
.sec-title::after{content:'';flex:1;height:1px;background:linear-gradient(to right,var(--border),transparent);}

/* ══ CARD ══ */
.card{
  background:var(--surface);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  transition:border-color .3s,box-shadow .3s,transform .3s;
}
.card:hover{
  border-color:var(--border2);
  box-shadow:0 10px 36px rgba(0,0,0,.22);
  transform:translateY(-2px);
}
.card-title{
  font-size:.75rem;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--accent2);
  margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.badge{
  background:var(--glow);border:1px solid var(--accent);
  border-radius:5px;padding:2px 7px;
  font-size:.6rem;color:var(--accent3);
}

/* ══ INPUT / TEXTAREA ══ */
.key-row{display:flex;gap:10px;margin-bottom:12px;align-items:flex-start;}
.key-wrap{flex:1;}
.key-wrap input,textarea{
  width:100%;padding:11px 15px;
  background:var(--surface2);border:1px solid var(--border2);
  border-radius:10px;color:var(--text);
  font-family:var(--mono);font-size:.88rem;outline:none;
  transition:border-color .3s,box-shadow .3s;
  letter-spacing:.1em;
}
.key-wrap input:focus,textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--glow);
}
textarea{min-height:148px;resize:vertical;line-height:1.7;font-family:var(--mono);}
.output-area{
  border-color:rgba(45,212,191,.28)!important;
  background:rgba(45,212,191,.04)!important;
  color:var(--teal)!important;cursor:default;
}
.key-warn{color:var(--red);font-size:.7rem;margin-top:5px;display:none;}
.key-info{color:var(--text3);font-size:.7rem;margin-top:4px;font-weight:400;}
.char-count{font-size:.67rem;color:var(--text3);text-align:right;margin-top:5px;font-weight:500;}

/* ══ STRENGTH ══ */
.strength{display:flex;gap:4px;align-items:center;margin-top:7px;}
.sb{flex:1;height:4px;background:var(--border);border-radius:2px;transition:background .4s;}
.slabel{font-size:.64rem;color:var(--text3);font-weight:600;margin-left:6px;min-width:52px;}

/* ══ BUTTONS ══ */
.btn{
  padding:10px 18px;border:none;border-radius:10px;
  font-family:var(--font);font-size:.8rem;font-weight:600;
  cursor:pointer;transition:all .22s;
  display:inline-flex;align-items:center;gap:6px;
  white-space:nowrap;position:relative;overflow:hidden;
  letter-spacing:.02em;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;box-shadow:0 4px 18px rgba(124,108,252,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(124,108,252,.52);}
.btn-teal{
  background:linear-gradient(135deg,rgba(45,212,191,.16),rgba(45,212,191,.3));
  color:var(--teal);border:1px solid rgba(45,212,191,.38);
}
.btn-teal:hover{background:linear-gradient(135deg,rgba(45,212,191,.28),rgba(45,212,191,.45));transform:translateY(-1px);}
.btn-ghost{
  background:var(--surface2);color:var(--text2);
  border:1px solid var(--border2);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent2);transform:translateY(-1px);}
.btn-sm{padding:7px 11px;font-size:.73rem;}
.btn-icon{
  padding:8px;font-size:.95rem;background:var(--surface2);
  border:1px solid var(--border2);color:var(--text2);
  border-radius:10px;cursor:pointer;transition:all .2s;
}
.btn-icon:hover{border-color:var(--accent);color:var(--accent2);transform:scale(1.08);}
.action-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px;align-items:center;}

/* ══ RIPPLE ══ */
.ripple-btn{position:relative;overflow:hidden;}
.ripple{
  position:absolute;border-radius:50%;
  background:rgba(255,255,255,.22);
  transform:scale(0);animation:rippleA .55s ease-out;
  pointer-events:none;
}
@keyframes rippleA{to{transform:scale(4);opacity:0;}}

/* ══ SWAP ══ */
.swap-btn{
  background:linear-gradient(135deg,rgba(251,191,36,.1),rgba(244,114,182,.1));
  border:1px solid rgba(251,191,36,.28);color:var(--gold);
  border-radius:50%;width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:1.05rem;
  transition:all .32s;flex-shrink:0;align-self:center;
}
.swap-btn:hover{transform:rotate(180deg) scale(1.1);border-color:var(--gold);box-shadow:0 0 14px rgba(251,191,36,.3);}

/* ══ DROP ZONE ══ */
.drop-zone{
  border:2px dashed var(--border2);border-radius:10px;
  padding:18px;text-align:center;color:var(--text3);
  font-size:.78rem;cursor:pointer;
  transition:all .3s;margin-top:10px;font-weight:500;
}
.drop-zone:hover{border-color:var(--accent);color:var(--accent3);background:var(--glow);}
.drop-zone.drag-over{border-color:var(--teal);background:rgba(45,212,191,.06);color:var(--teal);transform:scale(1.01);}

/* ══ STATS ══ */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.stat-box{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:10px;padding:14px 10px;text-align:center;
  transition:all .3s;cursor:default;
}
.stat-box:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 18px var(--glow);}
.stat-val{
  font-size:1.7rem;font-weight:800;color:var(--accent2);line-height:1;
  transition:all .35s;
}
.stat-val.pop{animation:sPop .4s cubic-bezier(.34,1.56,.64,1);}
@keyframes sPop{0%{transform:scale(.8)}60%{transform:scale(1.18)}100%{transform:scale(1)}}
.stat-lbl{color:var(--text3);font-size:.65rem;margin-top:5px;letter-spacing:.1em;font-weight:600;text-transform:uppercase;}
.stat-extra{margin-top:13px;font-size:.72rem;color:var(--text3);}

/* ══ CHAR MAP ══ */
.cmap-scroll{
  max-height:152px;overflow-y:auto;
  border:1px solid var(--border);border-radius:10px;padding:9px;
}
.cmap-scroll::-webkit-scrollbar{width:4px;}
.cmap-scroll::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}
.char-row{
  display:flex;align-items:center;gap:7px;
  padding:3px 0;font-size:.75rem;
  border-bottom:1px solid var(--border);
  animation:cReveal .3s ease both;
}
.char-row:last-child{border-bottom:none;}
@keyframes cReveal{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:translateX(0)}}
.cbox{
  width:27px;height:27px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.85rem;transition:transform .2s;
}
.cbox:hover{transform:scale(1.18);}
.cp{background:rgba(124,108,252,.16);color:var(--accent3);border:1px solid rgba(124,108,252,.28);}
.ck{background:rgba(251,191,36,.13);color:var(--gold);border:1px solid rgba(251,191,36,.28);}
.ce{background:rgba(45,212,191,.13);color:var(--teal);border:1px solid rgba(45,212,191,.28);}
.cop{color:var(--text3);font-size:.72rem;}

/* ══ FREQ BARS ══ */
.freq-bars{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(23px,1fr));
  gap:3px;align-items:end;height:106px;margin-top:11px;
}
.fcol{display:flex;flex-direction:column;align-items:center;gap:2px;}
.fbar{
  width:100%;min-height:2px;border-radius:3px 3px 0 0;
  background:linear-gradient(to top,var(--accent),var(--teal));
  transition:height .5s cubic-bezier(.34,1.56,.64,1);
  position:relative;cursor:pointer;
}
.fbar:hover{filter:brightness(1.3);}
.fbar:hover::after{
  content:attr(data-count);
  position:absolute;top:-22px;left:50%;transform:translateX(-50%);
  background:var(--bg2);border:1px solid var(--border2);
  border-radius:5px;padding:2px 5px;
  font-size:.62rem;color:var(--text);white-space:nowrap;z-index:10;
  font-family:var(--font);font-weight:600;
}
.flbl{font-size:.57rem;color:var(--text3);font-weight:600;}

/* ══ HISTORY ══ */
.hist-list{
  display:flex;flex-direction:column;gap:7px;
  max-height:205px;overflow-y:auto;
}
.hist-list::-webkit-scrollbar{width:4px;}
.hist-list::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}
.hist-item{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:10px;padding:9px 13px;
  cursor:pointer;transition:all .22s;font-size:.75rem;
}
.hist-item:hover{border-color:var(--accent);background:var(--glow);transform:translateX(3px);}
.hi-top{display:flex;justify-content:space-between;margin-bottom:3px;}
.hi-key{color:var(--gold);font-weight:600;}
.hi-time{color:var(--text3);font-size:.65rem;}
.hi-msg{color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hi-enc{color:var(--teal);}
.empty-hist{color:var(--text3);font-size:.78rem;text-align:center;padding:22px;}

/* ══ TOAST ══ */
#toast-ct{
  position:fixed;top:74px;right:22px;
  display:flex;flex-direction:column;gap:9px;
  z-index:999;pointer-events:none;
}
.toast{
  background:var(--bg2);border:1px solid var(--border2);
  backdrop-filter:blur(22px);border-radius:11px;
  padding:11px 17px;font-size:.8rem;font-weight:500;
  display:flex;align-items:center;gap:8px;
  animation:tIn .38s cubic-bezier(.34,1.56,.64,1);
  box-shadow:0 8px 28px rgba(0,0,0,.3);pointer-events:all;
}
.toast.success{border-color:rgba(52,211,153,.45);color:var(--green);}
.toast.error{border-color:rgba(248,113,113,.45);color:var(--red);}
.toast.info{border-color:rgba(124,108,252,.45);color:var(--accent3);}
.toast.fade-out{animation:tOut .28s ease forwards;}
@keyframes tIn{from{opacity:0;transform:translateX(36px) scale(.9)}to{opacity:1;transform:translateX(0) scale(1)}}
@keyframes tOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(36px)}}

/* ══ MODAL ══ */
.modal-ov{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;
  z-index:200;opacity:0;pointer-events:none;transition:opacity .3s;
}
.modal-ov.show{opacity:1;pointer-events:all;}
.modal{
  background:var(--bg2);border:1px solid var(--border2);
  border-radius:var(--radius);padding:32px;
  max-width:490px;width:90%;
  transform:translateY(28px) scale(.96);
  transition:transform .32s cubic-bezier(.34,1.56,.64,1);
}
.modal-ov.show .modal{transform:translateY(0) scale(1);}
.modal h3{font-size:1.15rem;font-weight:700;margin-bottom:11px;color:var(--accent2);}
.modal p{color:var(--text2);font-size:.84rem;line-height:1.8;font-weight:400;}
.modal-close{margin-top:20px;}

/* ══ KBD ══ */
.kbd{
  display:inline-block;background:var(--surface2);
  border:1px solid var(--border2);border-radius:5px;
  padding:1px 7px;font-size:.67rem;color:var(--text3);font-family:var(--mono);
}

/* ══ FOOTER ══ */
footer{
  position:relative;z-index:1;
  background:var(--surface);backdrop-filter:blur(20px);
  border-top:1px solid var(--border);margin-top:36px;
}
.foot-inner{max-width:1200px;margin:0 auto;padding:38px 24px 22px;}
.foot-top{display:grid;grid-template-columns:1fr auto;gap:40px;margin-bottom:28px;}
.foot-brand{font-weight:800;font-size:1.05rem;margin-bottom:8px;}
.foot-desc{color:var(--text3);font-size:.76rem;max-width:340px;line-height:1.8;margin-bottom:16px;font-weight:400;}
.foot-links{display:flex;gap:7px;flex-wrap:wrap;}
.foot-link{
  padding:7px 15px;background:var(--surface2);
  border:1px solid var(--border);border-radius:18px;
  color:var(--text2);cursor:pointer;font-size:.75rem;font-weight:500;
  transition:all .22s;
}
.foot-link:hover{border-color:var(--accent);color:var(--accent3);background:var(--glow);transform:translateY(-2px);}
.dev-card{
  display:flex;align-items:center;gap:16px;
  background:var(--surface2);border:1px solid var(--border2);
  border-radius:var(--radius);padding:16px 20px;
  transition:all .3s;position:relative;overflow:hidden;
}
.dev-card::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--glow),transparent);
  opacity:0;transition:opacity .3s;
}
.dev-card:hover::before{opacity:1;}
.dev-card:hover{transform:translateY(-2px);box-shadow:0 9px 26px var(--glow);}
.dev-avatar{
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--teal));
  flex-shrink:0;overflow:hidden;padding:0;
  box-shadow:0 0 20px var(--glow);
  border:2px solid var(--accent);
  transition:transform .3s;
}
.dev-avatar:hover{transform:scale(1.07) rotate(3deg);}
.dev-avatar img{width:100%;height:100%;object-fit:cover;object-position:center top;border-radius:50%;}
.dev-info{position:relative;z-index:1;}
.dev-name{font-weight:700;font-size:.97rem;}
.dev-role{color:var(--accent2);font-size:.73rem;margin-top:2px;font-weight:500;}
.dev-tag{color:var(--text3);font-size:.69rem;margin-top:1px;}
.dev-links{display:flex;gap:5px;margin-top:8px;}
.dev-link{
  background:var(--surface);border:1px solid var(--border2);
  border-radius:7px;padding:4px 10px;color:var(--text2);
  font-size:.68rem;font-weight:500;cursor:pointer;transition:all .2s;
}
.dev-link:hover{border-color:var(--accent);color:var(--accent3);transform:translateY(-1px);}
.foot-btm{
  border-top:1px solid var(--border);padding-top:14px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:.7rem;color:var(--text3);
}
.foot-btm span{color:var(--accent2);font-weight:600;}

/* ══ GRID ══ */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;}

/* ══ RESPONSIVE ══ */
@media(max-width:900px){
  header{padding:13px 18px;}
  main{padding:20px 14px 40px;}
  .grid2,.grid3{grid-template-columns:1fr;}
  .foot-top{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(3,1fr);}
}
@media(max-width:540px){
  .logo-text h1{font-size:1.1rem;}
  .dev-card{flex-direction:column;text-align:center;}
  .dev-links{justify-content:center;}
}

@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}