/* Vengeance-inspired dark UI */
:root{--bg:#07070f;--surface:#10121c;--surface-2:#161923;--surface-3:#1c1f2b;--border:#232639;--border-hover:#353955;--text:#e9eaf6;--text-dim:#8e92ad;--primary:#7c5cff;--primary-glow:rgba(124,92,255,.35);--accent:#ff5c8a;--green:#00d26a;--orange:#ff7e47;--yellow:#ffc048;--red:#ff4757;--font:system-ui,-apple-system,"Segoe UI",sans-serif;--radius:14px;--radius-sm:10px;--shadow:0 20px 60px rgba(0,0,0,.55)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55;min-height:100vh;overflow-x:hidden}
a,button,.card,.btn{transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease}
body::before{content:"";position:fixed;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);opacity:0;z-index:200;pointer-events:none}
body.is-loading::before{opacity:1;animation:slideTop 1.6s infinite}
@keyframes slideTop{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.page{max-width:1400px;margin:0 auto;padding:28px 22px 100px}
.navbar{background:rgba(16,18,28,.65);border-bottom:1px solid var(--border);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);position:sticky;top:0;z-index:70}
.nav-inner{max-width:1400px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{color:var(--text);text-decoration:none;font-weight:800;font-size:18px;letter-spacing:-.4px}
.nav-logo span{color:var(--primary)}
.nav-links{display:flex;gap:14px;align-items:center}
.nav-email{font-size:13px;color:var(--text-dim)}
.nav-logout{color:var(--accent);text-decoration:none;font-size:13px;font-weight:600}
.nav-logout:hover{text-shadow:0 0 10px rgba(255,92,138,.6)}
.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 64px)}
.auth-card{width:100%;max-width:420px;background:linear-gradient(180deg,rgba(16,18,28,.9),rgba(16,18,28,.7));border:1px solid var(--border);border-radius:16px;padding:28px 24px;box-shadow:var(--shadow);backdrop-filter:blur(8px);animation:floatUp .6s ease both}
@keyframes floatUp{from{opacity:0;transform:translateY(24px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
.auth-card:hover{border-color:var(--border-hover);transform:translateY(-2px) scale(1.002)}
.auth-card h1{font-size:22px;margin-bottom:6px;font-weight:800;letter-spacing:-.3px}
.auth-subtitle{color:var(--text-dim);font-size:13px;margin-bottom:20px}
.auth-form label{display:block;margin-bottom:12px}
.auth-form label span{display:block;font-size:12px;color:var(--text-dim);margin-bottom:5px;font-weight:700;letter-spacing:.3px;text-transform:uppercase}
.auth-form input{width:100%;padding:10px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:14px}
.auth-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.btn-full{width:100%;text-align:center;justify-content:center}
.auth-footer{margin-top:16px;text-align:center;font-size:13px;color:var(--text-dim)}
.auth-footer a{color:var(--primary);text-decoration:none;font-weight:600}
.alert{background:rgba(255,71,87,.12);border:1px solid rgba(255,71,87,.45);color:#ff8a96;border-radius:10px;padding:10px 14px;margin-bottom:14px;font-size:13px}
.demo-hint{margin-top:18px;padding-top:14px;border-top:1px solid var(--border);font-size:12px;color:var(--text-dim)}
.demo-hint summary{cursor:pointer;color:var(--text);font-weight:700}
.demo-hint ul{margin-top:8px;padding-left:18px}
.demo-hint li{margin-bottom:5px}
.demo-hint code{background:var(--surface-2);padding:2px 6px;border-radius:4px;color:var(--text);font-size:12px}
.login-banner{background:linear-gradient(120deg,rgba(124,92,255,.2),rgba(255,92,138,.1));border:1px solid rgba(124,92,255,.4);border-radius:16px;padding:16px 20px;margin-bottom:28px;position:relative;overflow:hidden}
.login-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.08),transparent);transform:translateX(-100%);animation:sheen 2.8s infinite}
@keyframes sheen{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.login-banner-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:14px;position:relative;z-index:1}
.login-banner strong{color:var(--primary)}
.type-gradient{background:linear-gradient(180deg,#fff 30%,#b8b9d1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.level-section{margin-bottom:56px}
.level-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;margin-bottom:18px;border-bottom:1px solid var(--border)}
.level-header h2{font-size:20px;display:flex;align-items:center;gap:10px;font-weight:800}
.level-starters .level-header{border-bottom-color:rgba(255,192,72,.45)}
.level-movers .level-header{border-bottom-color:rgba(255,126,71,.45)}
.level-flyers .level-header{border-bottom-color:rgba(124,92,255,.45)}
.badge-group{display:flex;gap:8px}
.badge{font-size:11px;color:var(--text-dim);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:5px 14px;font-weight:700;transition:.2s}
.badge:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 20px rgba(124,92,255,.25)}
.test-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.test-card{background:linear-gradient(180deg,rgba(16,18,28,.9),rgba(16,18,28,.65));border:1px solid var(--border);border-radius:16px;padding:18px;display:block;text-decoration:none;color:var(--text);position:relative;overflow:hidden;transform-style:preserve-3d;perspective:600px;animation:floatUp .55s ease both}
.test-card::before{content:"";position:absolute;inset:0;background:radial-gradient(620px circle at var(--mouse-x,50%) var(--mouse-y,50%),rgba(124,92,255,.18),transparent 45%),linear-gradient(180deg,rgba(255,255,255,.03),transparent 40%);opacity:0;transition:opacity .3s;pointer-events:none;z-index:0}
.test-card::after{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(180deg,rgba(124,92,255,0),rgba(124,92,255,.05));opacity:0;transition:opacity .3s;pointer-events:none;z-index:0}
.test-card:hover::before{opacity:1}
.test-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 22px 50px rgba(0,0,0,.5),0 0 0 1px rgba(124,92,255,.4) inset}
.test-card.done{border-color:rgba(0,210,106,.35)}
.test-card.done:hover{border-color:var(--green);box-shadow:0 22px 50px rgba(0,0,0,.5),0 0 30px rgba(0,210,106,.25)}
.test-card>*{position:relative;z-index:1}
.test-card-header{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.test-num{font-weight:800;font-size:16px;letter-spacing:-.2px}
.test-badge-audio{font-size:11px;background:rgba(124,92,255,.2);color:#a29bfe;border-radius:999px;padding:3px 10px;font-weight:700}
.test-badge-key{font-size:11px;background:rgba(0,210,106,.12);color:#5effaa;border-radius:999px;padding:3px 10px;font-weight:700}
.done-badge{font-size:11px;background:rgba(0,210,106,.15);color:var(--green);border-radius:999px;padding:3px 10px;font-weight:700}
.audio-preview{list-style:none;padding:0;margin:10px 0 0;display:flex;flex-wrap:wrap;gap:5px}
.track-tag{font-size:10px;background:var(--surface-2);color:var(--text-dim);border:1px solid var(--border);border-radius:999px;padding:3px 8px;max-width:100%;overflow:hidden;text-overflow:ellipsis}
.test-card-footer{margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}
.open-arrow{font-size:12px;color:var(--primary);font-weight:700}
.test-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--border)}
.test-title-area h1{font-size:24px;font-weight:800;letter-spacing:-.3px}
.test-subtitle{color:var(--text-dim);font-size:13px;margin-top:2px}
.test-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.status-badge{font-size:12px;padding:4px 12px;border-radius:999px;font-weight:700}
.status-badge.done{background:rgba(0,210,106,.12);color:var(--green);border:1px solid rgba(0,210,106,.35)}
.status-badge.in-progress{background:rgba(124,92,255,.12);color:#a29bfe;border:1px solid rgba(124,92,255,.35)}
.test-main{display:grid;grid-template-columns:320px 1fr;gap:20px;align-items:start}
@media (max-width:920px){.test-main{grid-template-columns:1fr}}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;border:none;font-size:13px;font-weight:700;cursor:pointer;text-decoration:none;position:relative;overflow:hidden}
.btn::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,rgba(255,255,255,.18),transparent);transform:translateX(-100%);transition:transform .45s}
.btn:hover::before{transform:translateX(100%)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--primary);color:white;box-shadow:0 14px 28px var(--primary-glow)}
.btn-primary:hover{box-shadow:0 18px 36px var(--primary-glow);filter:brightness(1.08)}
.btn-secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--border-hover);background:var(--surface-3)}
.btn-ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost-small{padding:8px 14px;font-size:12px;color:var(--primary);border:1px solid rgba(124,92,255,.5);border-radius:999px;text-decoration:none;font-weight:700;background:rgba(124,92,255,.08)}
.btn-ghost-small:hover{background:rgba(124,92,255,.16);transform:translateY(-1px)}
.btn-small{padding:6px 14px;font-size:12px}
.btn-stop{background:var(--surface-2);color:var(--text-dim);border:1px solid var(--border);border-radius:999px}
.dropdown{position:relative}
.dropdown-menu{display:none;position:absolute;top:calc(100% + 8px);right:0;z-index:20;background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);min-width:220px;padding:8px;backdrop-filter:blur(10px);transform-origin:top right;animation:dropIn .22s ease both}
@keyframes dropIn{from{opacity:0;transform:scale(.92) translateY(-4px)}to{opacity:1;transform:scale(1) translateY(0)}}
.dropdown-menu a{display:block;padding:10px 14px;color:var(--text);text-decoration:none;font-size:13px;border-radius:10px}
.dropdown-menu a:hover{background:var(--primary);color:white;transform:translateX(2px)}
.audio-panel{background:linear-gradient(180deg,rgba(16,18,28,.9),rgba(16,18,28,.7));border:1px solid var(--border);border-radius:14px;padding:16px;position:sticky;top:76px;max-height:calc(100vh - 96px);overflow-y:auto;backdrop-filter:blur(8px)}
.panel-title{font-size:12px;font-weight:800;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border);letter-spacing:.3px;text-transform:uppercase}
.cd-group{margin-bottom:16px}
.cd-group:last-of-type{margin-bottom:0}
.cd-label{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-dim);margin-bottom:8px;display:flex;justify-content:space-between;font-weight:700}
.track-count{font-size:10px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:2px 8px}
.track-list{display:flex;flex-direction:column;gap:5px}
.track-row{display:flex;align-items:center;gap:10px;padding:7px 10px;background:var(--surface-2);border:1px solid transparent;border-radius:10px}
.track-row:hover{border-color:var(--border-hover);background:#1d2030}
.track-row.active{border-color:var(--primary);background:rgba(124,92,255,.1)}
.play-btn{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:white;border:none;border-radius:999px;padding:6px 12px;font-size:11px;cursor:pointer;white-space:nowrap;font-weight:700;box-shadow:0 10px 20px var(--primary-glow)}
.play-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.play-btn.active{background:var(--accent);box-shadow:0 10px 20px rgba(255,92,138,.35)}
.track-name{font-size:12px;color:var(--text-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.download-btn{background:transparent;color:var(--text-dim);border:none;cursor:pointer;font-size:13px;margin-left:auto;flex-shrink:0;padding:2px 4px;border-radius:3px}
.download-btn:hover{color:var(--yellow)}
.global-player{margin-top:18px;padding-top:14px;border-top:1px solid var(--border)}
.global-player.hidden{display:none}
.now-playing{font-size:12px;margin-bottom:10px;color:var(--text-dim)}
.np-name{color:var(--text);font-weight:700;margin-left:8px;font-size:13px}
.pdf-area{background:linear-gradient(180deg,rgba(16,18,28,.9),rgba(16,18,28,.7));border:1px solid var(--border);border-radius:14px;padding:20px;backdrop-filter:blur(8px)}
.pdf-container{background:#1c1f2b;border-radius:12px;overflow:auto;max-height:calc(100vh - 280px);display:flex;justify-content:center;padding:10px}
.pdf-controls{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--border);flex-wrap:wrap}
.page-indicator{font-size:13px;color:var(--text-dim);font-weight:700}
.empty-state,.empty-state.large{text-align:center;padding:60px 20px;color:var(--text-dim)}
.empty-state.large{font-size:15px}
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center}
.modal.hidden{display:none}
.modal-overlay{position:absolute;inset:0;background:rgba(5,5,10,.55);backdrop-filter:blur(4px)}
.modal-box{position:relative;z-index:1;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px;width:100%;max-width:340px;box-shadow:var(--shadow);animation:floatUp .3s ease both}
.modal-box h3{margin-bottom:6px;font-size:16px;font-weight:800}
.modal-hint{color:var(--text-dim);font-size:12px;margin-bottom:10px}
.modal-input{width:100%;padding:10px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:14px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}
.footer{text-align:center;padding:28px 0;color:var(--text-dim);font-size:12px}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms !important;transition-duration:.01ms !important}}