:root{--bg-color:#0d0d0d;--container-bg:#171717;--glass-bg:rgba(255,255,255,0.03);--glass-border:rgba(255,255,255,0.08);--primary-color:#1a73e8;--primary-hover:#1557b0;--secondary-color:#3c4043;--text-primary:#e8eaed;--text-secondary:#9aa0a6;--accent-color:#8ab4f8;--success-color:#81c995;--marker-a-color:#1a73e8;--marker-b-color:#1a73e8;--transition-speed:0.3s;--border-radius:12px;--container-width:1000px}
*{margin:0;padding:0;box-sizing:border-box}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--secondary-color)}
body{font-family:'Inter',sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.4;font-size:14px;transition:background-color var(--transition-speed),color var(--transition-speed)}
h1,h2,h3{font-family:'Outfit',sans-serif;font-weight:700}
.container{max-width:var(--container-width);margin:0 auto;padding:20px}
.glass{background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:var(--border-radius)}
.main-header{padding:8px 0;margin-bottom:15px;background:radial-gradient(circle at center,rgba(240,62,110,0.05),transparent 70%);border-bottom:1px solid var(--glass-border)}
.header-content{display:flex;justify-content:center;align-items:center;text-align:center}
.brand{display:flex;flex-direction:column;align-items:center;gap:0}
.logo{font-size:1.6rem;line-height:1.1}
.logo a{text-decoration:none;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block}
.logo span{font-weight:400}
.slogan{font-size:.7rem;color:var(--text-secondary);font-weight:500;letter-spacing:.2px;margin:0}
#app-section{padding-bottom:50px}
.input-container{display:flex;flex-direction:column;gap:8px;width:100%;max-width:800px;margin:0 auto 15px auto;box-sizing:border-box}
.input-label{font-size:.85rem;color:var(--text-secondary);letter-spacing:.5px;text-transform:none}
.input-wrapper{position:relative;display:flex;width:100%}
input[type="text"]{flex:1;background:#212121;border:1px solid var(--glass-border);border-radius:10px;padding:18px 56px 18px 20px;color:var(--text-primary);font-size:1rem;font-weight:700;outline:none;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:inset 0 2px 4px rgba(0,0,0,.2)}
input[type="text"]:focus{border-color:var(--primary-color);background:#2a2a2a;box-shadow:0 0 0 4px rgba(240,62,110,.1),inset 0 2px 4px rgba(0,0,0,.2);transform:translateY(-1px)}
input[type="text"]::placeholder{color:#555;font-weight:700}
.clear-btn{position:absolute;right:14px;top:50%;transform:translateY(-50%);background:transparent;border:none;color:var(--text-secondary);width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);z-index:5;opacity:.7}
.clear-btn:hover{background:rgba(255,255,255,.08);color:var(--primary-color);opacity:1}
.clear-btn i{width:18px;height:18px;stroke-width:3px}
.clear-btn.hidden{display:none}
.main-layout-grid{display:flex;flex-direction:column;align-items:center;gap:15px;width:100%;max-width:800px;margin:0 auto 20px auto;box-sizing:border-box}
.main-column{width:100%;min-width:0}
.player-section{padding:0}
#player-container{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:8px;overflow:hidden;margin-bottom:40px;box-shadow:0 10px 30px rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center}
.spinner-container{position:absolute;z-index:10;display:flex;align-items:center;justify-content:center;background:var(--bg-color);width:100%;height:100%;transition:opacity .3s}
.spinner-container.hidden{opacity:0;pointer-events:none}
.spinner{width:40px;height:40px;border:4px solid var(--glass-border);border-top:4px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}
#player{width:100%;height:100%}
.progress-bar-container{width:94%;margin-left:auto;margin-right:auto;margin-bottom:15px}
.progress-bar{position:relative;height:10px;margin-bottom:12px;cursor:pointer;overflow:visible}
.progress-rail{position:relative;width:100%;height:100%;background:var(--secondary-color);border-radius:5px;overflow:hidden}
.progress-fill{position:absolute;height:100%;background:var(--primary-color);border-radius:5px;width:0%;box-shadow:0 0 10px rgba(26,115,232,.3)}
.loop-highlight{position:absolute;height:100%;background:rgba(26,115,232,.2);z-index:1;pointer-events:none;border-left:2px solid var(--primary-color);border-right:2px solid var(--primary-color)}
.marker{position:absolute;top:50%;width:30px;height:60px;display:flex;flex-direction:column;align-items:center;z-index:6;transition:left .15s cubic-bezier(.4,0,.2,1);cursor:ew-resize;transform:translate(-50%,-50%);touch-action:none}
.marker::after{content:'';position:absolute;top:50%;left:50%;width:14px;height:14px;background:currentColor;border:2px solid var(--bg-color);border-radius:50%;box-shadow:0 2px 5px rgba(0,0,0,.5);transform:translate(-50%,-50%)}
.marker-label{position:absolute;top:-12px;left:50%;transform:translateX(-50%);white-space:nowrap;width:max-content;font-size:11px;font-weight:800;padding:3px 6px;background:var(--bg-color);border-radius:4px;border:1px solid currentColor;user-select:none;box-shadow:0 2px 4px rgba(0,0,0,.3);z-index:10}
.features-panel{margin-top:25px;padding:20px;background:rgba(26,26,26,.4);border-radius:16px;border:1px solid var(--glass-border)}
.marker-line{position:absolute;top:50%;left:50%;width:2px;height:30px;background:currentColor;opacity:.8;transform:translate(-50%,-50%);pointer-events:none}
.marker-triangle{display:none}
.marker-a{color:var(--marker-a-color)}
.marker-a .marker-triangle{border-top-color:var(--marker-a-color);filter:drop-shadow(0 0 5px rgba(255,165,0,.5))}
.marker-b{color:var(--marker-b-color)}
.marker-b .marker-triangle{border-top-color:var(--marker-b-color);filter:drop-shadow(0 0 5px rgba(0,0,255,.5))}
.hidden{display:none}
#seek-slider{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer;z-index:3}
.time-display{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-secondary);font-variant-numeric:tabular-nums}
.controls-grid{display:flex;flex-direction:column;gap:15px;align-items:center;padding-top:10px}
.main-row{gap:10px}
.main-row{background:rgba(255,255,255,.02);padding:8px 12px;border-radius:10px;border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap}
.group{display:flex;align-items:center;gap:6px}
.editor-deck{display:flex;align-items:center;justify-content:center;gap:12px;background:rgba(23,23,23,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:40px;padding:6px 16px;margin:10px auto 20px auto;width:fit-content;max-width:96%;box-shadow:0 10px 40px rgba(0,0,0,.6);flex-wrap:nowrap;transition:all .3s cubic-bezier(.4,0,.2,1)}
@media (max-width:800px){.editor-deck{gap:8px;padding:6px 12px}.deck-group{gap:4px}}
@media (max-width:680px){.editor-deck{flex-wrap:wrap;border-radius:20px;padding:12px;gap:16px;justify-content:center}.deck-divider{display:none}.deck-group{background:rgba(255,255,255,.03);padding:4px 8px;border-radius:12px}}
@media (max-width:420px){.editor-deck{gap:12px;padding:10px 4px}.deck-group{gap:2px;background:transparent;padding:0}.deck-btn{width:36px;height:36px}.deck-btn.btn-main{width:40px;height:40px}.speed-stepper{height:36px;padding:0 4px}}
.deck-group{display:flex;align-items:center;gap:8px}
.deck-btn{background:transparent;border:none;color:var(--text-primary);width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:color .2s ease,background-color .2s ease,box-shadow .2s ease}
.deck-btn:hover{color:var(--primary-color)}
.deck-btn.btn-main{background:var(--primary-color);color:#fff;width:44px;height:44px}
.deck-btn.btn-main:hover{background:var(--primary-hover);box-shadow:0 0 15px rgba(26,115,232,.4)}
.deck-btn.btn-setter{font-weight:800;font-size:13px;background:rgba(255,255,255,.05);border:1px solid var(--glass-border)}
.deck-btn.btn-setter:hover{border-color:var(--primary-color)}
#toggle-loop-btn.active{color:var(--primary-color);background:rgba(26,115,232,.15);box-shadow:inset 0 0 0 1px var(--primary-color)}
#full-video-loop-btn.active{color:var(--success-color);background:rgba(129,201,149,.15);box-shadow:inset 0 0 0 1px var(--success-color)}
.deck-btn svg{width:20px!important;height:20px!important}
.deck-divider{width:1px;height:24px;background:var(--glass-border);margin:0 4px}
.speed-stepper{display:flex;align-items:center;background:rgba(255,255,255,.05);border-radius:20px;padding:0 8px;height:38px;gap:4px;box-sizing:border-box;border:1px solid transparent}
.stepper-btn{background:transparent;border:none;color:var(--text-secondary);width:30px;height:100%;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:color .2s}
.stepper-btn:hover{color:var(--text-primary)}
.stepper-btn svg{width:14px!important;height:14px!important}
#speed-display{font-size:.85rem;font-weight:700;color:var(--primary-color);min-width:48px;text-align:center}
.features-panel{display:flex;flex-direction:column;height:400px;overflow:hidden;background:var(--container-bg);border-radius:12px;margin-top:15px;contain:layout style;will-change:transform}
.tabs-nav{display:flex;background:var(--glass-bg);border-bottom:1px solid var(--glass-border)}
.tab-btn{flex:1;padding:8px 4px;background:transparent;border:none;color:var(--text-secondary);font-family:inherit;font-weight:600;font-size:.8rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:4px;transition:all .2s}
.tab-btn svg{width:14px!important;height:14px!important}
.tab-btn:hover{color:var(--text-primary);background:rgba(255,255,255,.05)}
.tab-btn.active{color:var(--primary-color);border-bottom:2px solid var(--primary-color)}
.tabs-content{flex:1;padding:10px;overflow-y:auto}
.tab-panel{display:none;height:100%;flex-direction:column}
.tab-panel.active{display:flex}
.tab-panel h3{font-size:.95rem;margin-bottom:12px;color:var(--text-primary)}
.speed-stepper{display:flex;align-items:center;background:var(--secondary-color);border-radius:6px;padding:2px;height:32px;box-sizing:border-box}
#speed-display{font-size:.8rem;font-weight:600;color:var(--text-primary);min-width:42px;text-align:center;user-select:none;line-height:normal}
.speed-stepper .btn-sm{background:transparent;border:none;padding:0 8px;height:100%;min-height:auto;display:flex;align-items:center}
.speed-stepper .btn-sm:hover{background:rgba(255,255,255,.05)}
.volume-control{display:flex;align-items:center;gap:8px;width:100px}
.volume-control input[type="range"]{width:100%}
.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.panel-header h3{margin-bottom:0}
.panel-actions{display:flex;gap:8px;align-items:center}
.panel-actions .btn-sm{display:flex;align-items:center;justify-content:center;cursor:pointer;width:32px;height:32px;padding:0;background:var(--secondary-color);border:1px solid var(--glass-border);border-radius:6px;color:var(--text-primary);transition:all .2s}
.panel-actions .btn-sm:hover{background:var(--primary-color);border-color:var(--primary-color);color:#fff}
.panel-actions .btn-sm i{width:16px;height:16px}
.presets-list{list-style:none}
.preset-item{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;background:var(--secondary-color);border-radius:4px;margin-bottom:6px;font-size:.85rem}
.preset-info{flex:1;cursor:pointer}
.preset-info:hover .preset-name{color:var(--primary-color)}
.preset-name{font-weight:600;margin-bottom:2px}
.preset-time{font-size:.75rem;color:var(--text-secondary);opacity:.8}
.btn-delete{cursor:pointer;background:transparent;border:none;color:var(--text-primary);transition:color .2s}
.btn-delete:hover{color:#ff4444}
#notes-area{flex:1;background:var(--container-bg);border:1px solid var(--glass-border);border-radius:8px;padding:10px;color:var(--text-primary);resize:none;outline:none;font-size:.9rem;min-height:200px}
.options-list{display:flex;flex-direction:column;gap:15px}
.divider{border:none;border-top:1px solid var(--glass-border);margin:5px 0}
.action-buttons{display:flex;flex-direction:column;gap:12px;margin-top:15px}
.btn-full{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;font-weight:600}
.shortcuts-list{display:flex;flex-direction:column;gap:12px;margin-top:10px}
.shortcut-cat{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--primary-color);margin-top:15px;margin-bottom:5px;border-bottom:1px solid var(--glass-border);padding-bottom:4px}
.shortcut-cat:first-of-type{margin-top:5px}
kbd{background:var(--secondary-color);border:1px solid var(--glass-border);border-radius:4px;padding:2px 8px;font-size:.8rem;font-family:monospace;min-width:25px;text-align:center}
.shortcut-item span{font-size:.85rem;color:var(--text-secondary)}
#toast-container{position:fixed;bottom:20px;right:20px;z-index:2000}
.toast{background:var(--container-bg);color:#fff;padding:12px 24px;border-radius:8px;box-shadow:0 8px 32px rgba(0,0,0,.4);border-left:4px solid var(--primary-color);opacity:0;transform:translateY(20px) scale(.95);pointer-events:none;transition:opacity .3s cubic-bezier(.4,0,.2,1),transform .3s cubic-bezier(.175,.885,.32,1.275);z-index:2001}
.toast.visible{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
@keyframes toastBounce{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
.toast.bounce{animation:toastBounce .2s cubic-bezier(.4,0,.2,1)}
.toast-info{border-left-color:var(--primary-color)}
.toast-warning{border-left-color:#fbbc04}
.toast-error{border-left-color:#ea4335}
@keyframes slideIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.info-guide{width:100%;max-width:800px;margin:15px auto;padding:20px;box-sizing:border-box;color:var(--text-primary)}
.info-content-wrapper{display:flex;flex-direction:column;gap:40px}
.info-header h1{font-size:1.5rem;margin-bottom:20px;color:var(--text-primary)}
.info-header h2{font-size:1.2rem;margin-bottom:20px;color:var(--text-primary);border-bottom:1px solid var(--glass-border);padding-bottom:10px}
.info-header p{font-size:.95rem;line-height:1.6;color:rgba(255,255,255,.7)}
.info-section h2{font-size:1.2rem;margin-bottom:20px;color:var(--text-primary);border-bottom:1px solid var(--glass-border);padding-bottom:10px}
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.info-card{background:rgba(255,255,255,.02);border:1px solid var(--glass-border);border-radius:12px;padding:20px}
.info-card h3{display:flex;align-items:center;gap:8px;font-size:1rem;margin-bottom:10px;color:var(--text-primary)}
.info-card h3 i{width:16px;height:16px}
.info-card p{font-size:.85rem;line-height:1.5;color:rgba(255,255,255,.6)}
.steps-flow{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:15px}
.step-block{display:flex;flex-direction:column;gap:12px;padding:20px;background:rgba(255,255,255,.02);border:1px solid var(--glass-border);border-radius:12px;position:relative;overflow:hidden}
.step-header{display:flex;align-items:center;gap:12px}
.step-num{display:flex;align-items:center;justify-content:center;width:24px;height:24px;background:var(--primary-color);color:#fff;border-radius:50%;font-size:.75rem;font-weight:800;flex-shrink:0}
.step-header h3{font-size:.95rem;font-weight:700;color:var(--text-primary)}
.step-block p{font-size:.85rem;line-height:1.6;color:rgba(255,255,255,.6);padding-left:0}
footer{padding:40px 0;text-align:center;color:var(--text-secondary);font-size:.9rem}
.footer-content{display:flex;flex-direction:column;gap:15px;align-items:center}
.footer-links{display:flex;gap:20px}
.footer-links a{color:var(--text-secondary);text-decoration:none;font-size:.85rem;transition:color .2s}
.footer-links a:hover{color:var(--primary-color)}
@media (max-width:768px){.logo{font-size:1.6rem}}
@media (max-width:700px){.v-divider{display:none}.main-column{flex-direction:column;gap:15px;padding:0}.main-column .group{width:100%;justify-content:center;flex-wrap:wrap}.speed-stepper{width:auto}.info-guide{padding:20px;margin:20px auto}.info-header h2{font-size:1.2rem}.info-grid{grid-template-columns:1fr}.step-block p{padding-left:0;margin-top:5px}}