/* ===========================================================
   AzubiNinja AKADEMIE 2026 - Universal Design System
   Schrift: Apple-Style Mix (SF Pro Display + Inter)
   Splash: Schwebendes Shuriken mit 3D-Klingen
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&family=Noto+Sans+JP:wght@400;700&display=swap');

*{margin:0;padding:0;box-sizing:border-box}

:root{
  /* === FARBEN === */
  --bg:#070710;
  --bg2:#0f0f1a;
  --bg3:#1a1a2a;
  --bg-card:rgba(20,20,32,.6);
  --line:rgba(255,255,255,.08);
  --line2:rgba(255,255,255,.16);
  --ink:#f5f5f7;             /* Apple-Inspired */
  --ink2:rgba(245,245,247,.65);
  --ink3:rgba(245,245,247,.4);
  --ink4:rgba(245,245,247,.25);
  
  --cyan:#00f5ff;
  --pink:#ff006e;
  --gold:#d4a574;
  --jade:#aaff00;
  --amber:#ffb800;
  --violet:#8b5cf6;
  
  /* === GRADIENTS === */
  --grad-hero:linear-gradient(135deg,#d4a574 0%,#ff006e 50%,#00f5ff 100%);
  --grad-elec:linear-gradient(135deg,#00f5ff 0%,#8b5cf6 100%);
  --grad-sun:linear-gradient(135deg,#ffb800 0%,#ff006e 100%);
  --grad-jade:linear-gradient(135deg,#aaff00 0%,#00f5ff 100%);
  
  /* === SCHRIFT (Apple-Style Mix) === */
  --f-d: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', sans-serif;
  --f-b: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', sans-serif;
  --f-m: 'SF Mono', 'JetBrains Mono', ui-monospace, monospace;
  --f-jp:'Noto Sans JP', sans-serif;
  
  --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:28px; --r-2xl:36px;
  
  --sh-glow-cyan:0 0 40px rgba(0,245,255,.35);
  --sh-glow-pink:0 0 40px rgba(255,0,110,.35);
  --sh-card:0 16px 48px -16px rgba(0,0,0,.5);
  --sh-elevated:0 32px 80px -20px rgba(0,245,255,.3);
}

html,body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-b);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5{font-family:var(--f-d);font-weight:700;letter-spacing:-.025em;line-height:1.1}

/* === ZEN MESH BACKGROUND === */
.zen-mesh{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    radial-gradient(circle at 25% 30%,rgba(0,245,255,.06) 0%,transparent 35%),
    radial-gradient(circle at 75% 70%,rgba(255,0,110,.05) 0%,transparent 40%),
    radial-gradient(circle at 50% 100%,rgba(212,165,116,.04) 0%,transparent 50%);
}
.zen-grid{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.4;
  background-image:
    linear-gradient(rgba(255,255,255,.012) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.012) 1px,transparent 1px);
  background-size:80px 80px;
}
.zen-blob{position:fixed;border-radius:50%;filter:blur(120px);opacity:.25;pointer-events:none;z-index:-2}
.zen-blob-1{top:-200px;left:-200px;width:700px;height:700px;background:radial-gradient(circle,rgba(0,245,255,.8),transparent 70%);animation:zenFloat 22s ease-in-out infinite}
.zen-blob-2{bottom:-250px;right:-200px;width:800px;height:800px;background:radial-gradient(circle,rgba(255,0,110,.6),transparent 70%);animation:zenFloat 28s ease-in-out infinite reverse;animation-delay:-10s}
.zen-blob-3{top:40%;left:50%;width:500px;height:500px;background:radial-gradient(circle,rgba(212,165,116,.4),transparent 70%);animation:zenFloat 35s ease-in-out infinite;animation-delay:-18s}
@keyframes zenFloat{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(60px,-40px) scale(1.05)}
  66%{transform:translate(-50px,30px) scale(.95)}
}

/* ===========================================================
   SHURIKEN SPLASH
   =========================================================== */
.ak-splash{
  position:fixed;inset:0;z-index:99999;
  background:radial-gradient(ellipse at 50% 50%,#0f0f1a 0%,#070710 60%,#000 100%);
  display:grid;place-items:center;
  transition:opacity 1s cubic-bezier(.16,1,.3,1),visibility 1s
}
.ak-splash.hide{opacity:0;visibility:hidden;pointer-events:none}
.ak-splash::before,.ak-splash::after{
  content:"";position:absolute;border-radius:50%;
  filter:blur(100px);pointer-events:none
}
.ak-splash::before{
  width:600px;height:600px;left:-150px;top:-150px;
  background:radial-gradient(circle,rgba(0,245,255,.4),transparent 70%);
  animation:zenFloat 6s ease-in-out infinite
}
.ak-splash::after{
  width:700px;height:700px;right:-150px;bottom:-150px;
  background:radial-gradient(circle,rgba(255,0,110,.35),transparent 70%);
  animation:zenFloat 8s ease-in-out infinite reverse
}

.ak-stage{
  position:relative;z-index:2;text-align:center;
  perspective:2000px
}

/* SCHWEBENDES SHURIKEN === */
.shuriken-wrap{
  width:200px;height:200px;margin:0 auto 48px;position:relative;
  transform-style:preserve-3d;
  animation:shFloat 4s ease-in-out infinite
}
@keyframes shFloat{
  0%,100%{transform:translateY(0) rotateX(15deg)}
  50%{transform:translateY(-12px) rotateX(15deg)}
}

.shuriken{
  position:absolute;inset:0;
  animation:shSpin 3s linear infinite;
  transform-style:preserve-3d
}
@keyframes shSpin{to{transform:rotateZ(360deg)}}

.shuriken-blade{
  position:absolute;top:50%;left:50%;
  width:90px;height:24px;
  background:linear-gradient(90deg,transparent 0%,rgba(0,245,255,.2) 20%,#00f5ff 50%,rgba(255,0,110,.6) 80%,transparent 100%);
  transform-origin:0 50%;
  filter:blur(.3px) drop-shadow(0 0 8px rgba(0,245,255,.6));
  border-radius:0 30px 30px 0
}
.shuriken-blade::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.4) 50%,transparent 100%);
  border-radius:inherit
}
.shuriken-blade-1{transform:translate(0,-50%) rotate(0deg)}
.shuriken-blade-2{transform:translate(0,-50%) rotate(90deg)}
.shuriken-blade-3{transform:translate(0,-50%) rotate(180deg)}
.shuriken-blade-4{transform:translate(0,-50%) rotate(270deg)}

.shuriken-trail{
  position:absolute;inset:0;border-radius:50%;
  border:1px solid transparent;
  background:conic-gradient(from 0deg,transparent 0%,rgba(0,245,255,.3) 25%,rgba(255,0,110,.3) 50%,transparent 75%);
  -webkit-mask:linear-gradient(#fff 0 0) padding-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  animation:shSpin 3s linear infinite reverse;
  filter:blur(2px)
}

.shuriken-center{
  position:absolute;top:50%;left:50%;
  width:70px;height:70px;border-radius:50%;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle at 30% 25%,#fff,#d4a574 30%,#ff006e 70%,#8b5cf6 100%);
  box-shadow:
    0 0 60px rgba(255,0,110,.5),
    0 0 120px rgba(0,245,255,.3),
    inset 0 -10px 20px rgba(0,0,0,.5);
  z-index:5;
  animation:orbPulse 2s ease-in-out infinite
}
.shuriken-center::before{
  content:"";position:absolute;top:18%;left:22%;
  width:30%;height:30%;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.95),transparent 60%);
  filter:blur(2px)
}
@keyframes orbPulse{
  0%,100%{transform:translate(-50%,-50%) scale(1)}
  50%{transform:translate(-50%,-50%) scale(1.08)}
}

.shuriken-kanji{
  position:absolute;top:50%;left:50%;
  font-family:var(--f-jp);font-weight:700;font-size:32px;
  color:rgba(255,255,255,.9);
  transform:translate(-50%,-50%);z-index:6;
  text-shadow:0 0 20px rgba(0,245,255,.8);
  animation:kanjiPulse 2s ease-in-out infinite;
  pointer-events:none
}
@keyframes kanjiPulse{0%,100%{opacity:.9}50%{opacity:.6}}

/* Brand */
.ak-splash-brand{
  font-family:var(--f-d);font-weight:800;font-size:64px;
  letter-spacing:-.04em;line-height:1;
  background:var(--grad-hero);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:18px
}
.ak-splash-tag{
  font-family:var(--f-m);font-size:11px;
  text-transform:uppercase;letter-spacing:.35em;color:var(--ink3);
  margin-bottom:48px
}
.ak-splash-tag span{color:var(--cyan);font-weight:600}

.ak-splash-tags{
  display:flex;gap:8px;justify-content:center;flex-wrap:wrap;
  max-width:480px;margin:0 auto 32px
}
.ak-tag{
  font-family:var(--f-m);font-size:10px;
  color:var(--ink3);text-transform:uppercase;letter-spacing:.18em;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.06);
  animation:tagIn .6s cubic-bezier(.16,1,.3,1) both
}
.ak-tag:nth-child(1){animation-delay:.2s}
.ak-tag:nth-child(2){animation-delay:.35s}
.ak-tag:nth-child(3){animation-delay:.5s}
.ak-tag:nth-child(4){animation-delay:.65s}
.ak-tag:nth-child(5){animation-delay:.8s}
.ak-tag:nth-child(6){animation-delay:.95s}
@keyframes tagIn{
  from{opacity:0;transform:translateY(15px) scale(.85)}
  to{opacity:1;transform:translateY(0) scale(1)}
}

.ak-splash-bar{
  width:280px;height:2px;border-radius:999px;
  background:rgba(255,255,255,.05);overflow:hidden;
  position:relative;margin:0 auto
}
.ak-splash-bar::after{
  content:"";position:absolute;top:0;left:-30%;height:100%;width:30%;
  background:linear-gradient(90deg,transparent,#00f5ff,#ff006e,#d4a574,transparent);
  border-radius:999px;
  animation:barSweep 1.6s linear infinite
}
@keyframes barSweep{0%{left:-30%}100%{left:100%}}

/* ===========================================================
   TOPBAR
   =========================================================== */
.ak-nav{
  position:sticky;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 32px;height:80px;
  background:rgba(7,7,16,.75);
  backdrop-filter:blur(28px) saturate(180%);
  -webkit-backdrop-filter:blur(28px) saturate(180%);
  border-bottom:1px solid var(--line)
}
.ak-logo{display:flex;align-items:center;gap:14px;cursor:pointer;text-decoration:none}
.ak-mark{
  width:46px;height:46px;border-radius:13px;
  background:var(--grad-hero);
  display:grid;place-items:center;flex-shrink:0;
  box-shadow:0 12px 32px -10px rgba(255,0,110,.5);
  position:relative;overflow:hidden
}
.ak-mark::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 20%,rgba(255,255,255,.6),transparent 50%)
}
.ak-mark .kanji{
  position:relative;font-family:var(--f-jp);font-weight:700;font-size:22px;
  color:rgba(0,0,0,.9);z-index:2
}
.ak-brand{
  font-family:var(--f-d);font-weight:700;font-size:24px;
  letter-spacing:-.025em
}
.ak-brand-2{
  background:var(--grad-elec);
  -webkit-background-clip:text;background-clip:text;color:transparent
}

.ak-nav-r{display:flex;align-items:center;gap:8px}
.ak-nav-btn{
  padding:9px 18px;border-radius:999px;
  font-family:var(--f-b);font-size:13px;font-weight:500;color:var(--ink2);
  transition:all .2s;border:1px solid transparent;cursor:pointer
}
.ak-nav-btn:hover{background:rgba(255,255,255,.05);color:var(--ink)}
.ak-nav-btn.on{background:rgba(0,245,255,.10);color:var(--cyan);border-color:rgba(0,245,255,.25)}

.ak-cta{
  padding:11px 24px;border-radius:999px;
  background:var(--grad-elec);color:#070710;
  font-family:var(--f-b);font-size:13px;font-weight:700;
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 8px 28px -8px rgba(0,245,255,.5);
  transition:all .25s;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;text-decoration:none
}
.ak-cta:hover{transform:translateY(-1px);box-shadow:0 14px 36px -8px rgba(0,245,255,.7)}

/* ===========================================================
   BUTTONS
   =========================================================== */
.btn{
  padding:12px 24px;border-radius:999px;
  font-family:var(--f-b);font-size:14px;font-weight:600;
  cursor:pointer;transition:all .25s;
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid transparent;text-decoration:none
}
.btn-p{
  background:var(--grad-elec);color:#070710;
  border-color:rgba(255,255,255,.2);
  box-shadow:0 8px 28px -8px rgba(0,245,255,.5);
  font-weight:700
}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(0,245,255,.7)}
.btn-s{
  background:rgba(255,255,255,.04);color:var(--ink);
  border-color:var(--line2)
}
.btn-s:hover{background:rgba(255,255,255,.08);border-color:var(--cyan);color:var(--cyan)}
.btn-lg{padding:16px 32px;font-size:16px}

/* === INPUTS === */
input[type="text"],input[type="email"],input[type="password"],
input[type="number"],input[type="search"],textarea,select{
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  color:var(--ink);
  font-family:var(--f-b);font-size:14px;
  padding:13px 16px;outline:none;width:100%;
  transition:all .2s
}
input:focus,textarea:focus,select:focus{
  border-color:var(--cyan);
  background:rgba(0,245,255,.04);
  box-shadow:0 0 0 3px rgba(0,245,255,.08)
}

/* === TOAST === */
#toast{
  position:fixed;bottom:24px;right:24px;
  padding:14px 24px;border-radius:var(--r-md);
  background:rgba(20,20,32,.95);
  backdrop-filter:blur(20px);
  border:1px solid var(--line2);
  color:var(--ink);font-family:var(--f-b);font-size:13px;
  z-index:99999;
  transform:translateY(100px);opacity:0;
  transition:all .3s cubic-bezier(.16,1,.3,1);
  max-width:360px
}
#toast.show{transform:translateY(0);opacity:1}

/* === SCROLLBAR === */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.08);border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,245,255,.25)}
::selection{background:rgba(0,245,255,.3);color:var(--ink)}

/* === PAGE === */
.page{display:none;width:100%}
.page.on{display:block;animation:pageIn .5s cubic-bezier(.16,1,.3,1) both}
@keyframes pageIn{
  from{opacity:0;transform:translateY(15px)}
  to{opacity:1;transform:translateY(0)}
}

/* === REVEAL === */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.reveal-in{opacity:1;transform:translateY(0)}

@media (max-width:980px){
  .ak-nav{padding:12px 16px;height:64px}
  .ak-nav-btn:not(.ak-cta){display:none}
  .ak-brand{font-size:20px}
  .ak-splash-brand{font-size:48px}
  .shuriken-wrap{width:160px;height:160px}
  .shuriken-center{width:56px;height:56px}
}