:root{
  --bg:#0a0014;
  --bg-2:#13002a;
  --panel:#1a0533;
  --panel-2:#240a48;
  --border:rgba(255,255,255,0.08);
  --text:#f4eaff;
  --muted:#a89bc0;
  --neon-pink:#ff2bd6;
  --neon-cyan:#00f0ff;
  --neon-purple:#a855f7;
  --neon-green:#39ff88;
  --gradient:linear-gradient(135deg,#ff2bd6 0%,#a855f7 50%,#00f0ff 100%);
  --shadow-neon:0 0 24px rgba(255,43,214,0.35),0 0 48px rgba(168,85,247,0.2);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,sans-serif;min-height:100%;line-height:1.5;-webkit-font-smoothing:antialiased}
body{
  background:
    radial-gradient(900px 600px at 10% -10%, rgba(255,43,214,0.18), transparent 60%),
    radial-gradient(800px 500px at 90% 10%, rgba(0,240,255,0.14), transparent 60%),
    radial-gradient(700px 400px at 50% 100%, rgba(168,85,247,0.18), transparent 60%),
    var(--bg);
  background-attachment:fixed;
}
a{color:var(--neon-cyan);text-decoration:none}
a:hover{color:var(--neon-pink)}
button{cursor:pointer;font-family:inherit;font-size:inherit;border:none;background:none;color:inherit}

/* NAV */
.topnav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;backdrop-filter:blur(14px);
  background:rgba(10,0,20,0.7);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:20px;letter-spacing:0.5px}
.brand svg{color:var(--neon-pink);filter:drop-shadow(0 0 8px rgba(255,43,214,0.6))}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--muted);font-weight:500;font-size:15px;transition:color .2s}
.nav-links a.active,.nav-links a:hover{color:var(--text)}
.nav-user{color:var(--neon-cyan);font-size:14px;font-weight:600}
.nav-cta{background:var(--gradient);color:#fff !important;padding:8px 18px;border-radius:999px;font-weight:600;box-shadow:var(--shadow-neon)}
.nav-cta:hover{transform:translateY(-1px)}
.nav-cta-ghost{border:1px solid var(--border);padding:7px 16px;border-radius:999px}
.nav-toggle{display:none;color:var(--text)}
@media(max-width:780px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(10,0,20,0.97);flex-direction:column;padding:16px;border-bottom:1px solid var(--border);gap:14px}
  .nav-links.open{display:flex}
}

.main{min-height:calc(100vh - 130px)}

/* ALERTS */
.alert-error{background:rgba(255,80,80,0.12);border:1px solid rgba(255,80,80,0.4);color:#ffb3b3;padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:14px}
.alert-ok{background:rgba(57,255,136,0.1);border:1px solid rgba(57,255,136,0.4);color:#9cffc7;padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:14px}

/* BUTTONS */
.btn-primary{
  background:var(--gradient);color:#fff;font-weight:700;
  padding:14px 24px;border-radius:12px;width:100%;
  box-shadow:var(--shadow-neon);transition:transform .15s,filter .15s;font-size:15px;
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.1)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;filter:grayscale(.3)}
.btn-ghost{border:1px solid var(--border);padding:12px 20px;border-radius:12px;color:var(--text);font-weight:600}
.btn-ghost:hover{border-color:var(--neon-pink)}
.btn-danger{background:rgba(255,80,80,0.15);border:1px solid rgba(255,80,80,0.5);color:#ffb3b3;padding:8px 14px;border-radius:10px;font-size:13px;font-weight:600}
.btn-danger:hover{background:rgba(255,80,80,0.25)}
.btn-icon{width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,0.06);border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;color:var(--text)}
.btn-icon:hover{background:rgba(255,255,255,0.12);color:var(--neon-cyan)}

/* AUTH */
.auth-wrap{display:flex;align-items:center;justify-content:center;padding:60px 20px;min-height:calc(100vh - 130px)}
.auth-card{width:100%;max-width:420px;background:rgba(26,5,51,0.85);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:24px;padding:40px 32px;box-shadow:0 25px 60px rgba(0,0,0,0.5),var(--shadow-neon)}
.auth-logo{display:flex;justify-content:center;color:var(--neon-pink);margin-bottom:16px;filter:drop-shadow(0 0 12px rgba(255,43,214,0.5))}
.auth-card h1{font-size:28px;text-align:center;margin-bottom:6px;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.auth-sub{text-align:center;color:var(--muted);margin-bottom:24px;font-size:14px}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-form label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);font-weight:500}
.auth-form input{background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);font-size:15px;transition:border-color .2s,box-shadow .2s}
.auth-form input:focus{outline:none;border-color:var(--neon-pink);box-shadow:0 0 0 3px rgba(255,43,214,0.15)}
.auth-switch{text-align:center;margin-top:18px;color:var(--muted);font-size:14px}

/* LANDING */
.hero{padding:80px 24px 60px;text-align:center;max-width:980px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,43,214,0.12);border:1px solid rgba(255,43,214,0.4);color:var(--neon-pink);padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase;margin-bottom:24px}
.hero h1{font-size:clamp(36px,7vw,72px);font-weight:900;line-height:1.05;margin-bottom:20px;letter-spacing:-1px}
.hero h1 .grad{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:clamp(16px,2vw,20px);color:var(--muted);max-width:680px;margin:0 auto 36px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-actions .btn-primary{width:auto;padding:16px 32px;font-size:16px}
.hero-actions .btn-ghost{padding:15px 30px;font-size:16px}

.features{padding:60px 24px;max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.feature{background:rgba(26,5,51,0.6);border:1px solid var(--border);border-radius:18px;padding:28px;backdrop-filter:blur(10px);transition:transform .2s,border-color .2s}
.feature:hover{transform:translateY(-4px);border-color:rgba(255,43,214,0.4)}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px;box-shadow:var(--shadow-neon)}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14px}

.how{padding:60px 24px;max-width:1100px;margin:0 auto}
.how h2{text-align:center;font-size:32px;margin-bottom:48px;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.step{text-align:center;padding:24px}
.step-num{width:56px;height:56px;border-radius:50%;background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900;margin:0 auto 16px;box-shadow:var(--shadow-neon)}
.step h4{font-size:18px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}

.cta-band{padding:80px 24px;text-align:center;background:linear-gradient(180deg,transparent,rgba(255,43,214,0.06))}
.cta-band h2{font-size:36px;margin-bottom:14px;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.cta-band p{color:var(--muted);margin-bottom:28px;font-size:17px}

/* STUDIO */
.studio{padding:24px;max-width:1200px;margin:0 auto}
.studio-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.studio-head h1{font-size:26px;font-weight:800}
.studio-head h1 .grad{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

.studio-grid{display:grid;grid-template-columns:1fr 320px;gap:20px}
@media(max-width:960px){.studio-grid{grid-template-columns:1fr}}

.panel{background:rgba(26,5,51,0.65);border:1px solid var(--border);border-radius:18px;padding:22px;backdrop-filter:blur(10px)}
.panel h3{font-size:14px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin-bottom:14px;font-weight:700}

/* Visualiseur */
.visualizer-wrap{position:relative;height:160px;border-radius:14px;background:rgba(0,0,0,0.4);overflow:hidden;border:1px solid var(--border);margin-bottom:20px}
#visualizer{width:100%;height:100%;display:block}
.rec-indicator{position:absolute;top:12px;left:12px;display:flex;align-items:center;gap:8px;color:#ff5577;font-size:13px;font-weight:600;opacity:0;transition:opacity .2s}
.rec-indicator.on{opacity:1}
.rec-dot{width:10px;height:10px;border-radius:50%;background:#ff3366;animation:pulse 1s infinite}
.timer{position:absolute;top:12px;right:14px;font-variant-numeric:tabular-nums;color:var(--text);font-weight:700;font-size:18px;background:rgba(0,0,0,0.5);padding:4px 10px;border-radius:8px}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.5}}

/* Transport */
.transport{display:flex;gap:12px;justify-content:center;align-items:center;margin-bottom:24px;flex-wrap:wrap}
.btn-record{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,#ff2bd6,#ff3366);box-shadow:0 0 30px rgba(255,43,214,0.6);color:#fff;display:flex;align-items:center;justify-content:center;transition:transform .15s}
.btn-record:hover{transform:scale(1.05)}
.btn-record.recording{background:linear-gradient(135deg,#ff3366,#ff0000);animation:recPulse 1.2s infinite}
@keyframes recPulse{0%,100%{box-shadow:0 0 30px rgba(255,43,214,0.6)}50%{box-shadow:0 0 50px rgba(255,80,80,0.9)}}
.btn-play{width:64px;height:64px;border-radius:50%;background:var(--gradient);color:#fff;box-shadow:var(--shadow-neon);display:flex;align-items:center;justify-content:center;transition:transform .15s}
.btn-play:hover{transform:scale(1.05)}
.btn-play:disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.btn-stop{width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,0.08);border:1px solid var(--border);color:var(--text);display:flex;align-items:center;justify-content:center}
.btn-stop:hover{background:rgba(255,255,255,0.15)}

/* Effets / Sliders */
.effects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px}
.slider-cell{background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:12px;padding:14px}
.slider-cell label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px;font-weight:600;text-transform:uppercase;letter-spacing:0.5px}
.slider-cell .val{color:var(--neon-cyan);font-weight:700;font-size:13px;float:right}
.slider-cell input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:6px;background:linear-gradient(90deg,var(--neon-pink),var(--neon-purple),var(--neon-cyan));border-radius:3px;outline:none}
.slider-cell input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;border:2px solid var(--neon-pink);cursor:pointer;box-shadow:0 0 10px rgba(255,43,214,0.6)}
.slider-cell input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:2px solid var(--neon-pink);cursor:pointer}

/* Presets */
.presets{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.preset-chip{padding:8px 14px;border-radius:999px;background:rgba(255,255,255,0.05);border:1px solid var(--border);color:var(--muted);font-size:13px;font-weight:600;transition:all .15s}
.preset-chip:hover{color:var(--text);border-color:var(--neon-pink)}
.preset-chip.active{background:var(--gradient);color:#fff;border-color:transparent;box-shadow:var(--shadow-neon)}

/* Beats */
.beats-list{display:flex;flex-direction:column;gap:8px;max-height:380px;overflow-y:auto;padding-right:6px}
.beat-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:10px;transition:all .15s;cursor:pointer}
.beat-item:hover{border-color:var(--neon-cyan)}
.beat-item.active{background:rgba(0,240,255,0.1);border-color:var(--neon-cyan);box-shadow:0 0 12px rgba(0,240,255,0.2)}
.beat-icon{width:36px;height:36px;border-radius:8px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.beat-info{flex:1;min-width:0}
.beat-name{font-size:14px;font-weight:600;color:var(--text)}
.beat-meta{font-size:12px;color:var(--muted)}
.beat-play{color:var(--neon-cyan);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(0,240,255,0.1)}

/* Save */
.save-row{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.save-row input[type=text]{flex:1;min-width:200px;background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:10px;padding:12px;color:var(--text);font-size:14px}
.save-row input[type=text]:focus{outline:none;border-color:var(--neon-pink)}

/* MES MORCEAUX */
.tracks-page{padding:30px 24px;max-width:1100px;margin:0 auto}
.tracks-page h1{font-size:30px;margin-bottom:24px;font-weight:800}
.tracks-page h1 .grad{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tracks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.track-card{background:rgba(26,5,51,0.7);border:1px solid var(--border);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:12px;transition:transform .15s,border-color .15s}
.track-card:hover{transform:translateY(-3px);border-color:rgba(255,43,214,0.4)}
.track-card-top{display:flex;align-items:center;gap:12px}
.track-cover{width:52px;height:52px;border-radius:12px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;box-shadow:0 4px 14px rgba(255,43,214,0.3)}
.track-card h3{font-size:16px;font-weight:700;margin:0}
.track-card .meta{font-size:12px;color:var(--muted)}
.track-card audio{width:100%;border-radius:8px}
.track-card-actions{display:flex;gap:8px;flex-wrap:wrap}
.empty{text-align:center;padding:80px 20px;color:var(--muted)}
.empty svg{color:var(--muted);opacity:.5;margin-bottom:16px}
.empty h2{color:var(--text);font-size:22px;margin-bottom:8px}

/* FOOTER */
.footer{padding:24px;border-top:1px solid var(--border);margin-top:40px;color:var(--muted);font-size:13px;background:rgba(0,0,0,0.3)}
.footer-inner{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-links{display:flex;gap:18px}

/* TRACK PAGE */
.track-page{padding:60px 24px;max-width:680px;margin:0 auto;text-align:center}
.track-page .cover-big{width:220px;height:220px;margin:0 auto 24px;border-radius:24px;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 25px 60px rgba(0,0,0,0.5),var(--shadow-neon)}
.track-page h1{font-size:32px;margin-bottom:8px;font-weight:800}
.track-page .artist{color:var(--muted);margin-bottom:24px;font-size:16px}
.track-page audio{width:100%;max-width:520px}

/* Scrollbars */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.1);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,43,214,0.4)}

/* Loader */
.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,0.2);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;display:inline-block;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}

/* Toast */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--panel-2);border:1px solid var(--border);padding:14px 22px;border-radius:12px;color:var(--text);font-weight:600;box-shadow:0 12px 30px rgba(0,0,0,0.5);z-index:1000;transition:transform .3s;font-size:14px}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:var(--neon-green);color:var(--neon-green)}
.toast.err{border-color:#ff5577;color:#ff8aa3}