/* ============================================================
   FizzDisk site — black + blue palette, matched to the app
   App theme: customtkinter "dark" + "blue" theme.
   Colors pulled from app: bg #0d1013, accent #3b82f6, text #dfe3ea,
   err #ff6b6b. Extending with a navy family for depth.
   ============================================================ */
:root{
  --bg:        #0a0e14;
  --bg-2:      #0d1219;
  --panel:     #11161f;
  --panel-2:   #151c27;
  --panel-3:   #1a2230;
  --border:    #212a37;
  --border-2:  #2b3648;
  --accent:    #3b82f6;
  --accent-2:  #60a5fa;
  --accent-deep:#1d4ed8;
  --text:      #e6ebf4;
  --muted:     #93a1b5;
  --muted-2:   #6b7a8e;
  --ok:        #34d399;
  --err:       #ff6b6b;
  --radius:    14px;
  --maxw:      1120px;
  --font:      "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --mono:      "Cascadia Code", "JetBrains Mono", Consolas, monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(59,130,246,.10), transparent 60%),
    radial-gradient(900px 500px at 15% 10%, rgba(29,78,216,.08), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--font);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--accent-2);text-decoration:none}
code{font-family:var(--mono);font-size:.86em;background:rgba(147,161,181,.10);padding:.12em .4em;border-radius:6px;color:#c3d0e2;white-space:nowrap}
::selection{background:rgba(59,130,246,.35)}
.wrap,.nav-inner,.hero-inner,.section{max-width:var(--maxw);margin:0 auto}

/* ---------- generic ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;font-weight:600;font-size:.95rem;
  padding:.6em 1.2em;border-radius:12px;border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease, box-shadow .2s ease, background .2s;text-decoration:none}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(180deg,var(--accent-2),var(--accent));color:#fff;
  box-shadow:0 8px 24px rgba(59,130,246,.35)}
.btn-primary:hover{box-shadow:0 12px 32px rgba(59,130,246,.5)}
.btn-ghost{background:rgba(147,161,181,.06);border-color:var(--border-2);color:var(--text)}
.btn-ghost:hover{background:rgba(147,161,181,.12)}
.btn-lg{font-size:1.05rem;padding:.75em 1.5em}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:rgba(10,14,20,.75);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;
  padding:.7rem 1.5rem;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--text)}
.brand-mark{display:flex}
.brand-name{font-size:1.15rem;font-weight:700;letter-spacing:.02em}
.brand-hl{color:var(--accent-2)}
.nav-links{display:flex;gap:1.6rem;align-items:center;font-weight:500;color:var(--muted)}
.nav-links a{color:var(--muted)}.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--accent-2)}
.nav-cta{font-size:.85rem;padding:.5em 1em}
@media(max-width:720px){.nav-links{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;padding:5.5rem 1.5rem 3rem;text-align:center;overflow:hidden}
.hero-glow{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 420px at 50% 38%, rgba(59,130,246,.18), transparent 65%)}
.hero-inner{position:relative}
.pill{display:inline-block;font-size:.82rem;font-weight:600;color:var(--accent-2);
  border:1px solid rgba(59,130,246,.35);background:rgba(59,130,246,.10);
  padding:.4em 1em;border-radius:999px;margin-bottom:1.4rem;letter-spacing:.02em}
.hero h1{font-size:clamp(2.3rem,6vw,4.2rem);font-weight:800;line-height:1.05;letter-spacing:-.02em}
.hero .hl{background:linear-gradient(90deg,var(--accent-2),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:680px;margin:1.4rem auto 0;font-size:1.12rem;color:var(--muted)}
.lead strong{color:var(--text)}
.hero-cta{display:flex;gap:1rem;justify-content:center;margin-top:2rem;flex-wrap:wrap}
.hero-meta{display:flex;gap:.7rem;justify-content:center;align-items:center;
  margin-top:2.2rem;color:var(--muted-2);font-size:.85rem;flex-wrap:wrap}
.hero-meta .dot{color:var(--accent)}

/* ---------- app mock ---------- */
.mock-section{max-width:1060px;margin:0 auto;padding:1rem 1.5rem 3rem}
.mock-window{background:var(--panel);border:1px solid var(--border-2);border-radius:16px;
  box-shadow:0 30px 80px rgba(0,0,0,.55), 0 0 0 1px rgba(59,130,246,.06);
  overflow:hidden;font-family:var(--font)}
.mock-titlebar{display:flex;align-items:center;gap:1rem;padding:.6rem 1rem;
  background:linear-gradient(180deg,#161d29,#121824);border-bottom:1px solid var(--border)}
.mock-dots{display:flex;gap:.4rem}
.mock-dots i{width:11px;height:11px;border-radius:50%;background:#37404f;display:block}
.mock-dots i:nth-child(1){background:#ff5f57}
.mock-dots i:nth-child(2){background:#febc2e}
.mock-dots i:nth-child(3){background:#28c840}
.mock-title{font-size:.9rem;font-weight:600;color:var(--muted)}
.mock-badge{margin-left:auto;font-size:.72rem;font-weight:700;color:var(--ok);
  border:1px solid rgba(52,211,153,.35);background:rgba(52,211,153,.08);
  padding:.2em .7em;border-radius:999px}

.mock-source{display:flex;align-items:center;gap:.6rem;padding:.7rem 1rem;
  border-bottom:1px solid var(--border);flex-wrap:wrap;font-size:.85rem}
.mock-source label{color:var(--muted);font-weight:600}
.mock-combo{background:var(--panel-2);border:1px solid var(--border-2);padding:.35rem .7rem;
  border-radius:9px;color:var(--text);min-width:180px}
.mock-btn{background:var(--panel-3);border:1px solid var(--border-2);color:var(--text);
  padding:.32rem .7rem;border-radius:9px;font-size:.8rem;white-space:nowrap}
.mock-btn-accent{background:linear-gradient(180deg,var(--accent),var(--accent-deep));border-color:transparent;color:#fff}
.mock-btn.big{padding:.45rem 1.1rem;font-size:.85rem}
.mock-toggle{margin-left:auto;font-size:1rem;cursor:pointer}

.mock-body{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid var(--border)}
.mock-left,.mock-right{padding:1rem}
.mock-left{border-right:1px solid var(--border)}
.mock-pane-title{font-size:.75rem;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.05em;margin-bottom:.7rem}
.mock-row{display:flex;align-items:center;gap:.6rem;padding:.45rem .6rem;border-radius:8px;
  margin-bottom:.35rem;font-size:.83rem;background:var(--panel-2)}
.mock-row-sel{background:rgba(59,130,246,.13);border:1px solid rgba(59,130,246,.35)}
.mock-row .t{flex:1;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mock-row .dur{color:var(--muted-2);font-size:.72rem}
.mock-actions{display:flex;gap:.5rem;margin-top:.8rem}
.mock-stream{padding:.4rem .6rem;border-radius:8px;background:var(--panel-2);
  margin-bottom:.35rem;font-size:.8rem;color:var(--muted)}
.mock-stream b{color:var(--text);font-weight:600}
.mock-stream b:nth-child(1){color:var(--accent-2)}

.ck{width:16px;height:16px;border-radius:5px;border:1.5px solid #3a475a;display:inline-block;flex:none}
.ck.on{background:var(--accent);border-color:var(--accent);position:relative}
.ck.on::after{content:"✓";color:#fff;font-size:11px;position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;font-weight:800}
.ck.sm{width:13px;height:13px;border-radius:4px}
.ck.sm.on::after{font-size:9px}

.mock-output{margin-top:.9rem;padding-top:.6rem;border-top:1px solid var(--border)}
.mock-field{display:flex;align-items:center;gap:.5rem;margin-bottom:.45rem;font-size:.8rem}
.mock-field label{color:var(--muted);width:74px;flex:none}
.mock-entry{flex:1;background:var(--panel-2);border:1px solid var(--border-2);
  padding:.32rem .6rem;border-radius:8px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mock-chk{display:flex;align-items:center;gap:.5rem;font-size:.78rem;color:var(--muted);margin:.4rem 0}
.mock-btnrow{display:flex;gap:.6rem;margin-top:.7rem}

.mock-bar{display:flex;align-items:center;gap:1rem;padding:.85rem 1rem;border-bottom:1px solid var(--border)}
.mock-progress{flex:1;height:14px;border-radius:7px;background:var(--panel-2);border:1px solid var(--border);overflow:hidden}
.mock-progress span{display:block;height:100%;border-radius:7px;
  background:linear-gradient(90deg,var(--accent-deep),var(--accent));box-shadow:0 0 12px rgba(59,130,246,.5)}
.mock-eta{font-size:.75rem;color:var(--muted)}
.mock-log{padding:.9rem 1rem;font-family:var(--mono);font-size:.76rem;color:#9fb0c6;line-height:1.7}
.mock-ok{color:var(--ok)}

@media(max-width:760px){.mock-body{grid-template-columns:1fr}.mock-left{border-right:none;border-bottom:1px solid var(--border)}}

/* ---------- sections ---------- */
.section{padding:4.5rem 1.5rem}
.section.alt{background:linear-gradient(180deg,rgba(59,130,246,.03),transparent 40%);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sec-title{text-align:center;font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.02em}
.sec-sub{text-align:center;max-width:720px;margin:1rem auto 0;color:var(--muted);font-size:1.05rem}
.sec-sub em{color:var(--accent-2);font-style:normal}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;margin-top:3rem}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid{grid-template-columns:1fr}}
.card{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--border);
  border-radius:var(--radius);padding:1.6rem;transition:transform .18s,border-color .18s,box-shadow .18s}
.card:hover{transform:translateY(-4px);border-color:rgba(59,130,246,.5);box-shadow:0 18px 40px rgba(0,0,0,.4)}
.card .ico{font-size:1.9rem;display:inline-flex;width:52px;height:52px;align-items:center;justify-content:center;
  background:rgba(59,130,246,.12);border:1px solid rgba(59,130,246,.3);border-radius:12px;margin-bottom:1rem}
.card h3{font-size:1.15rem;font-weight:700;margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.95rem}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.3rem;margin-top:3rem}
@media(max-width:800px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;position:relative}
.step .n{position:absolute;top:-1.1rem;left:1.3rem;width:2.4rem;height:2.4rem;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;
  background:linear-gradient(180deg,var(--accent-2),var(--accent-deep));box-shadow:0 6px 18px rgba(59,130,246,.4)}
.step h3{font-size:1.1rem;margin:.4rem 0 .4rem}
.step p{color:var(--muted);font-size:.92rem}
.how-note{text-align:center;margin-top:2.4rem;color:var(--muted);font-size:.95rem}

/* ---------- download ---------- */
.dl-card{max-width:860px;margin:0 auto;background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--border-2);border-radius:20px;padding:2.4rem;box-shadow:0 30px 70px rgba(0,0,0,.5)}
@media(max-width:820px){.dl-card{grid-template-columns:1fr}.dl-right{display:grid;grid-template-columns:1fr 1fr;gap:1rem}}
@media(max-width:520px){.dl-right{grid-template-columns:1fr}}
.dl-left h2{font-size:1.9rem;font-weight:800}
.dl-left>p{color:var(--muted);margin:.9rem 0 1.4rem}
.dl-list{list-style:none;margin-bottom:1.8rem}
.dl-list li{color:var(--text);font-size:.98rem;margin:.5rem 0}
.dl-list li b{color:var(--text)}
.dl-list li:first-child{margin-top:0}
.dl-cta{display:flex;gap:1rem;flex-wrap:wrap;align-items:center}
.dl-min{color:var(--muted-2);font-size:.82rem;margin-top:1.2rem}
.dl-right{display:flex;flex-direction:column;gap:1.2rem}
.dl-box{background:var(--panel-2);border:1px solid var(--border);border-radius:14px;padding:1.3rem}
.dl-box-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--accent-2);margin-bottom:.7rem}
.dl-box ul{list-style:none;color:var(--muted);font-size:.92rem}
.dl-box li{padding:.25rem 0}
.dl-box p{color:var(--muted);font-size:.9rem}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--border);padding:1.8rem 1.5rem;margin-top:2rem}
.foot-inner{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:1rem;color:var(--muted-2);font-size:.85rem}
.foot-links{display:flex;gap:1.4rem}
.foot-links a{color:var(--muted-2)}.foot-links a:hover{color:var(--text)}

/* ---------- auto-cataloging callout ---------- */
.callout{max-width:1060px;margin:0 auto;padding:0 1.5rem 2.6rem}
.callout-inner{display:flex;align-items:flex-start;gap:1.2rem;background:linear-gradient(180deg,rgba(59,130,246,.10),rgba(29,78,216,.05));border:1px solid rgba(59,130,246,.35);border-radius:16px;padding:1.5rem 1.6rem;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.callout-ico{font-size:2rem;display:flex;width:58px;height:58px;flex:none;align-items:center;justify-content:center;background:rgba(59,130,246,.16);border:1px solid rgba(59,130,246,.4);border-radius:14px}
.callout-body h3{font-size:1.2rem;font-weight:700;margin-bottom:.4rem}
.callout-body p{color:var(--muted);font-size:.97rem}
.callout-body strong{color:var(--text)}
@media(max-width:600px){.callout-inner{flex-direction:column}}

.chips{display:flex;gap:.6rem;justify-content:center;margin-top:1.4rem;flex-wrap:wrap}
.chip{font-size:.8rem;font-weight:600;color:var(--accent-2);border:1px solid rgba(59,130,246,.4);background:rgba(59,130,246,.08);padding:.35em .95em;border-radius:999px}

/* download support / reddit */
.dl-support{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:1.4rem;padding-top:1.2rem;border-top:1px solid var(--border)}
.btn-reddit{background:rgba(59,130,246,.10);border:1px solid rgba(59,130,246,.45);color:var(--accent-2);font-weight:600}
.btn-reddit:hover{background:rgba(59,130,246,.18)}
.dl-support-note{color:var(--muted);font-size:.9rem}