/* ============================================================
   SUPREME PRO — Core Stylesheet
   Premium iOS-inspired glassmorphism
   ============================================================ */

:root{
  --bg:#f3f4f8;
  --bg-alt:#eef0f6;
  --surface:rgba(255,255,255,0.6);
  --surface-solid:#ffffff;
  --surface-border:rgba(255,255,255,0.8);
  --text:#1c1d22;
  --text-dim:#5b5d6b;
  --text-faint:#8a8c9a;
  --accent:#4f6df5;
  --accent-2:#a855f7;
  --accent-3:#f97362;
  --accent-4:#10b981;
  --accent-5:#f59e0b;
  --success:#12b76a;
  --danger:#f04438;
  --warning:#f79009;
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-soft:0 8px 30px rgba(30,35,60,0.08);
  --shadow-lift:0 16px 40px rgba(30,35,60,0.14);
  --blur:18px;
  --header-h:72px;
  --font-display:'Fraunces', Georgia, serif;
  --font-body:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

:root[data-theme="dark"]{
  --bg:#0f1117;
  --bg-alt:#14161f;
  --surface:rgba(28,30,40,0.6);
  --surface-solid:#1a1c26;
  --surface-border:rgba(255,255,255,0.08);
  --text:#f1f2f6;
  --text-dim:#b6b8c6;
  --text-faint:#7c7e8d;
  --shadow-soft:0 8px 30px rgba(0,0,0,0.35);
  --shadow-lift:0 20px 50px rgba(0,0,0,0.45);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  background:
    radial-gradient(circle at 10% 0%, rgba(79,109,245,0.10), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(168,85,247,0.10), transparent 40%),
    var(--bg);
  color:var(--text);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  transition:background .4s ease,color .4s ease;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;font-weight:600;letter-spacing:-0.01em;}
p{margin:0;color:var(--text-dim);line-height:1.6;}
a{color:inherit;text-decoration:none;}
button{font-family:var(--font-body);cursor:pointer;}
img{max-width:100%;display:block;}
::selection{background:var(--accent);color:#fff;}

.container{max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- Glass primitives ---------- */
.glass{
  background:var(--surface);
  backdrop-filter:blur(var(--blur)) saturate(160%);
  -webkit-backdrop-filter:blur(var(--blur)) saturate(160%);
  border:1px solid var(--surface-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  height:var(--header-h);
  display:flex;align-items:center;
  background:var(--surface);
  backdrop-filter:blur(var(--blur)) saturate(160%);
  -webkit-backdrop-filter:blur(var(--blur)) saturate(160%);
  border-bottom:1px solid var(--surface-border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.25rem;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;font-weight:700;
  box-shadow:0 6px 16px rgba(79,109,245,0.35);
}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  padding:9px 16px;border-radius:999px;font-size:.94rem;font-weight:500;color:var(--text-dim);
  transition:background .2s ease,color .2s ease;
}
.main-nav a:hover,.main-nav a.active{background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:42px;height:42px;border-radius:14px;border:1px solid var(--surface-border);
  background:var(--surface-solid);display:flex;align-items:center;justify-content:center;
  color:var(--text-dim);transition:transform .15s ease,box-shadow .15s ease,color .15s ease;
}
.icon-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);color:var(--text);}
.icon-btn:active{transform:translateY(0);}
.search-trigger{
  display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;
  border:1px solid var(--surface-border);background:var(--surface-solid);color:var(--text-faint);
  font-size:.88rem;min-width:180px;
}
.search-trigger kbd{margin-left:auto;font-size:.72rem;padding:2px 6px;border-radius:6px;background:var(--bg-alt);color:var(--text-faint);}
.hamburger{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:none;font-weight:600;font-size:.95rem;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn:active{transform:scale(.97);}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 10px 24px rgba(79,109,245,0.35);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 30px rgba(79,109,245,0.42);}
.btn-ghost{
  background:var(--surface-solid);color:var(--text);border:1px solid var(--surface-border);
  box-shadow:var(--shadow-soft);
}
.btn-ghost:hover{transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:.85rem;border-radius:12px;}
.btn-block{width:100%;}
.btn-danger{background:var(--danger);color:#fff;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- Hero ---------- */
.hero{padding:76px 0 60px;position:relative;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.eyebrow-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--surface-solid);border:1px solid var(--surface-border);font-size:.82rem;
  color:var(--accent);font-weight:600;box-shadow:var(--shadow-soft);margin-bottom:22px;
}
.hero h1{font-size:clamp(2.2rem,4.5vw,3.6rem);line-height:1.08;margin-bottom:20px;}
.hero p.lead{font-size:1.1rem;max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-visual{position:relative;height:420px;}
.floaty-card{
  position:absolute;padding:20px;width:220px;
  animation:float 6s ease-in-out infinite;
}
.floaty-card.c1{top:10px;left:10px;animation-delay:0s;}
.floaty-card.c2{top:150px;right:0;width:190px;animation-delay:1.2s;}
.floaty-card.c3{bottom:10px;left:60px;width:240px;animation-delay:2.4s;}
.floaty-card .fc-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:12px;}
.floaty-card h4{font-size:.95rem;margin-bottom:4px;}
.floaty-card p{font-size:.78rem;}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}
@media(prefers-reduced-motion:reduce){.floaty-card{animation:none;}}

/* ---------- Section headers ---------- */
.section{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:30px;gap:20px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);}
.section-head p{max-width:480px;margin-top:8px;}

/* ---------- Search ---------- */
.search-overlay{
  position:fixed;inset:0;background:rgba(15,17,25,0.45);backdrop-filter:blur(4px);
  display:none;align-items:flex-start;justify-content:center;padding-top:12vh;z-index:200;
}
.search-overlay.open{display:flex;}
.search-panel{width:min(600px,92vw);max-height:70vh;display:flex;flex-direction:column;overflow:hidden;}
.search-input-row{display:flex;align-items:center;gap:12px;padding:18px 22px;border-bottom:1px solid var(--surface-border);}
.search-input-row input{
  flex:1;border:none;background:transparent;font-size:1.05rem;color:var(--text);outline:none;font-family:var(--font-body);
}
.search-results{overflow-y:auto;padding:10px;}
.search-result-item{
  display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:14px;transition:background .15s ease;
}
.search-result-item:hover{background:var(--bg-alt);}
.search-result-item .sri-icon{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:1.05rem;flex-shrink:0;}
.search-result-item .sri-text h5{font-size:.92rem;margin-bottom:2px;}
.search-result-item .sri-text p{font-size:.78rem;}
.search-empty{padding:40px 20px;text-align:center;color:var(--text-faint);}

/* ---------- Category chips ---------- */
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px;}
.chip{
  padding:9px 18px;border-radius:999px;background:var(--surface-solid);border:1px solid var(--surface-border);
  font-size:.85rem;font-weight:600;color:var(--text-dim);transition:all .2s ease;
}
.chip:hover{transform:translateY(-1px);}
.chip.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(79,109,245,0.3);}

/* ---------- Card grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;}
.tool-card,.game-card{
  padding:24px;display:flex;flex-direction:column;gap:14px;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease;position:relative;
}
.tool-card:hover,.game-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift);}
.card-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.35rem;color:#fff;}
.tool-card h3,.game-card h3{font-size:1.05rem;}
.tool-card p,.game-card p{font-size:.85rem;}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px;}
.card-cat{font-size:.72rem;font-weight:700;letter-spacing:.02em;color:var(--text-faint);}
.card-open{font-size:.85rem;font-weight:700;color:var(--accent);display:flex;align-items:center;gap:4px;}
.card-open svg{transition:transform .2s ease;}
.tool-card:hover .card-open svg{transform:translateX(3px);}

/* ---------- Workspace ---------- */
.workspace{display:none;padding:40px 0 80px;}
.workspace.open{display:block;}
.ws-back{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;color:var(--text-dim);margin-bottom:24px;}
.ws-back:hover{color:var(--accent);}
.ws-head{display:flex;align-items:center;gap:16px;margin-bottom:28px;}
.ws-head .card-icon{width:56px;height:56px;font-size:1.6rem;}
.ws-head h2{font-size:1.5rem;}
.ws-body{padding:32px;}
.ws-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--text-dim);margin-bottom:8px;}
.field input[type=text],.field input[type=number],.field input[type=date],.field input[type=password],
.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--surface-border);
  background:var(--surface-solid);color:var(--text);font-size:.92rem;font-family:var(--font-body);outline:none;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(79,109,245,0.12);}
.field textarea{resize:vertical;min-height:120px;}
.field-row{display:flex;gap:14px;}
.field-row .field{flex:1;}
input[type=range]{width:100%;accent-color:var(--accent);}
.checkbox-row{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--text-dim);}
.dropzone{
  border:2px dashed var(--surface-border);border-radius:var(--radius-md);padding:40px 20px;text-align:center;
  color:var(--text-faint);transition:all .2s ease;cursor:pointer;
}
.dropzone.drag{border-color:var(--accent);background:rgba(79,109,245,0.06);color:var(--accent);}
.result-area{margin-top:20px;padding:20px;border-radius:var(--radius-md);background:var(--bg-alt);min-height:60px;}
.result-row{display:flex;justify-content:space-between;padding:8px 0;font-size:.88rem;border-bottom:1px solid var(--surface-border);}
.result-row:last-child{border-bottom:none;}
.result-row strong{color:var(--text);}
.action-row{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap;}
.stat-big{font-family:var(--font-display);font-size:2.6rem;font-weight:700;}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.72rem;font-weight:700;background:rgba(79,109,245,0.12);color:var(--accent);}
.badge.demo{background:rgba(245,158,11,0.14);color:#b45309;}
.note-box{padding:14px 16px;border-radius:14px;background:rgba(79,109,245,0.07);border:1px solid rgba(79,109,245,0.15);font-size:.84rem;color:var(--text-dim);margin-top:16px;}
.color-swatch-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;}
.color-swatch{width:32px;height:32px;border-radius:9px;border:1px solid var(--surface-border);cursor:pointer;}
.preview-img{max-width:100%;border-radius:14px;margin-top:14px;box-shadow:var(--shadow-soft);}

/* ---------- Toast ---------- */
.toast-stack{position:fixed;bottom:24px;right:24px;z-index:300;display:flex;flex-direction:column;gap:10px;max-width:340px;}
.toast{
  padding:14px 18px;border-radius:14px;font-size:.88rem;display:flex;align-items:center;gap:10px;
  animation:toastin .25s ease;
}
@keyframes toastin{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}
.toast.success{border-left:4px solid var(--success);}
.toast.error{border-left:4px solid var(--danger);}
.toast.info{border-left:4px solid var(--accent);}

/* ---------- Footer ---------- */
.site-footer{padding:56px 0 30px;border-top:1px solid var(--surface-border);margin-top:60px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:32px;margin-bottom:40px;}
.footer-col h5{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);margin-bottom:14px;}
.footer-col a,.footer-col button{display:block;background:none;border:none;padding:0;text-align:left;color:var(--text-dim);font-size:.88rem;margin-bottom:10px;}
.footer-col a:hover,.footer-col button:hover{color:var(--accent);}
.footer-bottom{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-faint);flex-wrap:wrap;gap:10px;}

/* ---------- Modal ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(15,17,25,0.45);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:250;padding:20px;}
.modal-overlay.open{display:flex;}
.modal-box{width:min(480px,100%);padding:30px;max-height:80vh;overflow-y:auto;}
.modal-box h3{margin-bottom:14px;}
.modal-close{position:absolute;top:18px;right:18px;}

/* Calculator */
.calc{max-width:340px;margin:0 auto;}
.calc-display{font-family:var(--font-display);font-size:2.4rem;text-align:right;padding:20px 6px;word-break:break-all;min-height:70px;}
.calc-pad{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.calc-btn{padding:18px 0;border-radius:16px;border:none;background:var(--surface-solid);box-shadow:var(--shadow-soft);font-size:1.15rem;font-weight:600;transition:transform .1s ease;}
.calc-btn:active{transform:scale(.94);}
.calc-btn.op{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;}
.calc-btn.span2{grid-column:span 2;}

/* Game canvas */
.game-stage{position:relative;border-radius:var(--radius-md);overflow:hidden;background:var(--bg-alt);}
.game-stage canvas{display:block;width:100%;touch-action:none;}
.game-hud{display:flex;justify-content:space-between;align-items:center;padding:10px 6px;font-size:.9rem;font-weight:600;}
.game-overlay{position:absolute;inset:0;background:rgba(15,17,25,0.55);color:#fff;display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:20px;}
.game-overlay.show{display:flex;}
.game-overlay h3{color:#fff;}

/* Skeleton / loader */
.spinner{width:22px;height:22px;border-radius:50%;border:3px solid rgba(79,109,245,0.2);border-top-color:var(--accent);animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.loading-line{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:.88rem;}

/* Utility */
.hidden{display:none !important;}
.text-center{text-align:center;}
.mt-16{margin-top:16px;}
.flex-between{display:flex;justify-content:space-between;align-items:center;}
.flex-gap{display:flex;gap:10px;align-items:center;}
.w-full{width:100%;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}