/* ==================== Reset & Base ==================== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#09090b;--fg:#fafafa;
  --primary:#6366f1;--primary-light:#818cf8;--primary-dark:#4f46e5;
  --accent:#f472b6;--accent2:#34d399;
  --surface:#18181b;--surface2:#27272a;--surface3:#3f3f46;
  --border:#3f3f46;--muted:#a1a1aa;
  --radius:12px;
}
body{background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;line-height:1.6;overflow-x:hidden;-webkit-tap-highlight-color:transparent;padding-top:56px}
@media(min-width:640px){body{padding-top:64px}}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;width:100%;outline:none;resize:none}
input:focus,textarea:focus,select:focus{border-color:var(--primary)}
::placeholder{color:var(--muted);opacity:.5}
::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--surface)}::-webkit-scrollbar-thumb{background:var(--surface3);border-radius:3px}

/* ==================== Utilities ==================== */
.container{max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
.gradient-text{background:linear-gradient(135deg,#6366f1,#f472b6,#34d399);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-weight:600;font-size:14px;transition:all .2s}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.btn-primary:hover{opacity:.9}
.btn-outline{border:1px solid var(--border);color:var(--fg)}
.btn-outline:hover{background:var(--surface2)}
.btn-sm{padding:8px 16px;font-size:13px}
.glow{box-shadow:0 0 20px rgba(99,102,241,.3),0 0 60px rgba(99,102,241,.1)}
.glass{background:rgba(24,24,27,.85);backdrop-filter:blur(12px);border-bottom:1px solid rgba(63,63,70,.5)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;transition:all .3s}
.card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-2px)}
.tag{font-size:10px;font-weight:700;padding:2px 8px;border-radius:99px}
.badge{font-size:11px;padding:4px 12px;border-radius:99px;font-weight:500}
.hidden{display:none!important}
.text-muted{color:var(--muted)}.text-sm{font-size:13px}.text-xs{font-size:12px}
.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mb-8{margin-bottom:32px}
.mt-4{margin-top:16px}.mt-6{margin-top:24px}

/* ==================== Animations ==================== */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes blink{0%,50%{opacity:1}51%,100%{opacity:0}}
.anim-up{animation:fadeUp .5s ease both}.anim-in{animation:fadeIn .5s ease both}
.d1{animation-delay:.1s}.d2{animation-delay:.2s}.d3{animation-delay:.3s}.d4{animation-delay:.4s}.d5{animation-delay:.5s}.d6{animation-delay:.6s}.d7{animation-delay:.7s}.d8{animation-delay:.8s}
.shimmer-bar{height:16px;border-radius:8px;background:linear-gradient(90deg,var(--surface2) 25%,var(--surface3) 50%,var(--surface2) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
.typing-cursor::after{content:'|';animation:blink 1s infinite;color:var(--primary-light);margin-left:2px}

/* ==================== Nav ==================== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:56px}
@media(min-width:640px){.nav{height:64px}}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 16px;height:100%;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700}
.nav-logo .icon-box{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center}
.nav-links{display:none;align-items:center;gap:4px}
@media(min-width:768px){.nav-links{display:flex}}
.nav-link{padding:8px 14px;border-radius:8px;font-size:13px;font-weight:500;color:var(--muted);transition:all .2s;display:inline-block}
.nav-link:hover,.nav-link.active{color:var(--primary-light);background:rgba(99,102,241,.1)}
.nav-right{display:none;align-items:center;gap:12px}
@media(min-width:768px){.nav-right{display:flex}}
.nav-member{color:#fbbf24;font-size:13px;font-weight:500;padding:8px 14px;border-radius:8px}
.nav-member:hover{background:rgba(251,191,36,.1)}
.nav-auth{padding:8px 20px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-size:13px;font-weight:500}
.hamburger{display:flex;padding:8px;border-radius:8px;color:var(--muted)}
@media(min-width:768px){.hamburger{display:none}}
.hamburger svg{width:22px;height:22px}
.mobile-menu{position:fixed;inset:0;z-index:99;display:none}
.mobile-menu.open{display:block}
.mobile-menu-bg{position:absolute;inset:0;background:rgba(0,0,0,.6)}
.mobile-menu-body{position:absolute;top:56px;left:0;right:0;bottom:0;background:var(--bg);overflow-y:auto;padding:16px}
.mobile-menu-item{display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;color:var(--fg);width:100%}
.mobile-menu-item:hover{background:var(--surface2)}
.mobile-menu-item.highlight{color:#fbbf24}
.mobile-menu-divider{height:1px;background:var(--border);margin:12px 0}
.mobile-menu-auth{width:100%;padding:14px;border-radius:var(--radius);background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-size:14px;font-weight:500;margin-top:12px}

/* ==================== Footer ==================== */
.footer{border-top:1px solid var(--border);padding:20px 0;font-size:12px;color:var(--muted)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:8px}
@media(min-width:640px){.footer-inner{flex-direction:row;justify-content:space-between}}
.footer-logo{display:flex;align-items:center;gap:6px}
.footer-logo .icon-box{width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:11px}

/* ==================== Tool Page Common ==================== */
.tool-page-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
@media(min-width:640px){.tool-page-header{margin-bottom:32px}}
.tool-page-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.tool-page-header h1{font-size:20px;font-weight:700}
@media(min-width:640px){.tool-page-header h1{font-size:24px}}
.tool-page-header .desc{font-size:12px;color:var(--muted)}
@media(min-width:640px){.tool-page-header .desc{font-size:13px}}
.tool-layout{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:1024px){.tool-layout{grid-template-columns:2fr 3fr}}
.tool-panel{border-radius:16px;background:var(--surface);border:1px solid var(--border);padding:16px}
@media(min-width:640px){.tool-panel{padding:24px}}
.form-label{display:block;font-size:13px;font-weight:500;margin-bottom:8px}
.form-label .required{color:var(--accent)}
.option-grid{display:grid;gap:8px}
.option-grid.cols-2{grid-template-columns:1fr 1fr}
.option-grid.cols-3{grid-template-columns:1fr 1fr 1fr}
.option-btn{padding:10px 12px;border-radius:var(--radius);font-size:13px;font-weight:500;background:var(--surface2);border:1px solid var(--border);text-align:center;transition:all .2s;cursor:pointer}
.option-btn:hover{border-color:var(--surface3)}
.option-btn.active{background:rgba(99,102,241,.15);border-color:rgba(99,102,241,.4);color:var(--primary-light)}
.chip-group{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:6px 12px;border-radius:8px;font-size:12px;font-weight:500;background:var(--surface2);color:var(--muted);transition:all .2s;cursor:pointer}
.chip:hover{color:var(--fg)}
.chip.active{background:rgba(99,102,241,.15);color:var(--primary-light)}
.chip.accent{background:rgba(244,114,182,.15);color:var(--accent)}
.generate-btn{width:100%;padding:14px;border-radius:var(--radius);font-size:14px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .2s;margin-top:20px}
.generate-btn:disabled{opacity:.5;cursor:not-allowed}
.generate-btn.purple{background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#fff}
.generate-btn.blue{background:linear-gradient(135deg,#3b82f6,#4f46e5);color:#fff}
.generate-btn.pink{background:linear-gradient(135deg,#ec4899,#e11d48);color:#fff}
.generate-btn.teal{background:linear-gradient(135deg,#14b8a6,#0891b2);color:#fff}
.result-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:200px;color:var(--muted);text-align:center;padding:40px 20px}
@media(min-width:640px){.result-empty{min-height:300px}}
.result-empty .empty-icon{font-size:48px;opacity:.2;margin-bottom:16px}
.result-item{padding:14px;border-radius:var(--radius);background:var(--surface2);border:1px solid transparent;transition:all .2s;margin-bottom:10px}
.result-item:hover{border-color:rgba(99,102,241,.3)}
.result-title-text{font-size:13px;font-weight:500;line-height:1.5;flex:1}
.result-actions{display:flex;gap:4px;flex-shrink:0}
.result-actions button{padding:6px;border-radius:8px;color:var(--muted);transition:all .2s}
.result-actions button:hover{background:var(--surface3);color:var(--fg)}
.stars{display:flex;gap:2px;margin-top:8px;align-items:center}
.star{color:var(--surface3);font-size:12px}
.star.filled{color:#fbbf24}
.technique-tag{font-size:11px;color:var(--muted);background:var(--surface3);padding:2px 8px;border-radius:99px;margin-left:10px}
.typewriter-output{font-size:13px;line-height:1.8;white-space:pre-wrap;word-break:break-word}

/* ==================== Grids ==================== */
.grid2{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.grid2{grid-template-columns:1fr 1fr}}
.grid3{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.grid3{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.grid3{grid-template-columns:1fr 1fr 1fr}}

/* ==================== Home ==================== */
.hero{position:relative;padding:48px 0 60px;text-align:center;overflow:hidden}
@media(min-width:640px){.hero{padding:80px 0 96px}}
.hero-glow{position:absolute;top:80px;left:50%;transform:translateX(-50%);width:400px;height:400px;background:rgba(99,102,241,.08);border-radius:50%;filter:blur(120px);pointer-events:none}
.hero-glow2{position:absolute;top:160px;left:25%;width:200px;height:200px;background:rgba(244,114,182,.08);border-radius:50%;filter:blur(100px);pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:99px;background:rgba(99,102,241,.1);border:1px solid rgba(99,102,241,.2);color:var(--primary-light);font-size:12px;margin-bottom:24px}
@media(min-width:640px){.hero-badge{font-size:13px;margin-bottom:32px}}
.hero h1{font-size:28px;font-weight:800;line-height:1.2;margin-bottom:16px}
@media(min-width:640px){.hero h1{font-size:48px;margin-bottom:20px}}
@media(min-width:1024px){.hero h1{font-size:56px}}
.hero-sub{font-size:14px;color:var(--muted);max-width:560px;margin:0 auto 24px;padding:0 8px}
@media(min-width:640px){.hero-sub{font-size:17px;margin-bottom:32px}}
.hero-btns{display:flex;flex-direction:column;gap:12px;padding:0 16px;margin-bottom:32px}
@media(min-width:640px){.hero-btns{flex-direction:row;justify-content:center;padding:0;margin-bottom:48px}}
.hero-btns .btn{width:100%}
@media(min-width:640px){.hero-btns .btn{width:auto}}
.platforms{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding:0 8px}
.platforms span:first-child{font-size:12px;color:var(--muted)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:48px}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:64px}}
.stat-card{text-align:center;padding:16px;border-radius:16px;background:var(--surface);border:1px solid var(--border)}
@media(min-width:640px){.stat-card{padding:24px}}
.stat-card .stat-value{font-size:22px;font-weight:700;margin-bottom:4px}
@media(min-width:640px){.stat-card .stat-value{font-size:28px}}
.stat-card .stat-label{font-size:12px;color:var(--muted)}
.stat-card .stat-icon{margin-bottom:8px;color:var(--primary-light)}
.section-title{text-align:center;margin-bottom:32px}
@media(min-width:640px){.section-title{margin-bottom:48px}}
.section-title h2{font-size:22px;font-weight:700;margin-bottom:8px}
@media(min-width:640px){.section-title h2{font-size:30px}}
.section-title p{color:var(--muted);font-size:14px}
.tool-card{padding:24px;position:relative;display:block;cursor:pointer}
.tool-card .tool-tag{position:absolute;top:16px;right:16px}
.tool-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:22px}
.tool-card h3{font-size:15px;font-weight:600;margin-bottom:8px}
.tool-card p{font-size:13px;color:var(--muted);line-height:1.5}
.tool-arrow{font-size:13px;color:var(--primary-light);margin-top:12px;opacity:0;transition:opacity .2s}
.tool-card:hover .tool-arrow{opacity:1}
.cta-section{padding:0 0 64px}
@media(min-width:640px){.cta-section{padding:0 0 96px}}
.cta-box{position:relative;border-radius:16px;padding:32px 20px;text-align:center;border:1px solid rgba(99,102,241,.2);overflow:hidden}
@media(min-width:640px){.cta-box{padding:48px;border-radius:24px}}
.cta-box::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(99,102,241,.15),rgba(244,114,182,.08),rgba(52,211,153,.12));z-index:0}
.cta-box::after{content:'';position:absolute;inset:0;background:rgba(24,24,27,.5);z-index:1}
.cta-box>*{position:relative;z-index:2}
.cta-box h2{font-size:20px;font-weight:700;margin-bottom:12px}
@media(min-width:640px){.cta-box h2{font-size:28px;margin-bottom:16px}}
.cta-box p{color:var(--muted);margin-bottom:24px;font-size:14px}

/* ==================== Image ==================== */
.img-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.img-placeholder{border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-direction:column;color:rgba(255,255,255,.2);font-size:12px;cursor:pointer;position:relative;overflow:hidden;aspect-ratio:1;transition:all .2s}
.img-placeholder:hover{transform:scale(1.02)}
.img-placeholder.selected{outline:2px solid var(--primary);outline-offset:2px}
.img-placeholder .img-actions{position:absolute;bottom:8px;display:flex;gap:6px;opacity:1}
@media(min-width:640px){.img-placeholder .img-actions{opacity:0}.img-placeholder:hover .img-actions{opacity:1}}
.img-actions button{padding:6px 8px;border-radius:8px;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);color:#fff;font-size:11px}

/* ==================== Video ==================== */
.steps{display:flex;align-items:center;gap:4px;margin-bottom:24px;overflow-x:auto}
.step{display:flex;align-items:center;gap:4px;padding:6px 12px;border-radius:8px;font-size:12px;white-space:nowrap;color:var(--muted)}
.step.active{background:rgba(99,102,241,.15);color:var(--primary-light);font-weight:500}
.step-arrow{color:var(--muted);font-size:12px}
.scene-item{display:flex;gap:12px;padding:12px;border-radius:var(--radius);background:var(--surface2);margin-bottom:8px;animation:fadeUp .4s ease both}
.scene-num{width:32px;height:32px;border-radius:8px;background:rgba(99,102,241,.15);color:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
@media(min-width:640px){.scene-num{width:40px;height:40px;font-size:14px}}
.scene-info{flex:1;min-width:0}
.scene-title{font-size:13px;font-weight:500;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.scene-duration{font-size:11px;color:var(--muted);background:var(--surface3);padding:1px 6px;border-radius:99px}
.scene-desc,.scene-narration{font-size:12px;color:var(--muted);line-height:1.4}
.scene-narration{color:rgba(129,140,248,.6)}
.progress-bar{height:8px;border-radius:4px;background:var(--surface3);overflow:hidden;margin-top:16px}
.progress-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,#ec4899,#ef4444);transition:width .3s}
.video-preview{background:linear-gradient(180deg,#1a1a2e,#16213e);border-radius:var(--radius);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-direction:column}
.video-preview.v916{max-width:240px;aspect-ratio:9/16;margin:0 auto}
@media(min-width:640px){.video-preview.v916{max-width:280px}}
.video-preview.v169{aspect-ratio:16/9}
.video-preview .subtitle-bar{position:absolute;bottom:48px;left:0;right:0;text-align:center;padding:0 16px}
.video-preview .subtitle-bar span{background:rgba(0,0,0,.6);color:#fff;font-size:12px;padding:4px 12px;border-radius:8px}
.video-controls{position:absolute;bottom:0;left:0;right:0;padding:8px 12px;background:linear-gradient(transparent,rgba(0,0,0,.5))}
.video-timeline{height:3px;border-radius:2px;background:rgba(255,255,255,.2);margin-bottom:8px;overflow:hidden}
.video-timeline-fill{height:100%;background:#fff;border-radius:2px;transition:width .1s}
.video-ctrl-row{display:flex;align-items:center;justify-content:space-between;color:#fff;font-size:11px}
.timeline-item{padding:10px;border-radius:8px;background:var(--surface2);margin-bottom:6px;cursor:pointer;transition:all .2s;font-size:12px}
.timeline-item:hover{background:var(--surface3)}
.timeline-item.active{background:rgba(99,102,241,.15);border:1px solid rgba(99,102,241,.3)}
.timeline-head{display:flex;justify-content:space-between;margin-bottom:4px;font-weight:500}
.timeline-narration{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ==================== Audio ==================== */
.waveform{display:flex;align-items:center;gap:1px;height:48px;flex:1}
.wave-bar{flex:1;border-radius:2px;transition:background .1s}
.wave-bar.active{background:var(--primary)!important}
.voice-card{width:100%;padding:12px;border-radius:var(--radius);text-align:left;transition:all .2s;background:var(--surface2);border:1px solid var(--border);margin-bottom:8px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.voice-card:hover{border-color:var(--surface3)}
.voice-card.active{background:rgba(99,102,241,.12);border-color:rgba(99,102,241,.4)}
.voice-card .voice-name{font-size:13px;font-weight:500}
.voice-card.active .voice-name{color:var(--primary-light)}
.voice-card .voice-desc{font-size:11px;color:var(--muted)}
.voice-tags{display:flex;gap:4px}
.voice-tags span{font-size:10px;padding:2px 6px;border-radius:4px;background:var(--surface3);color:var(--muted)}

/* ==================== Pricing ==================== */
.pricing-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:48px}
@media(min-width:640px){.pricing-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.pricing-grid{grid-template-columns:repeat(4,1fr)}}
.plan-card{padding:24px;border-radius:16px;background:var(--surface);border:1px solid var(--border);position:relative;transition:all .3s}
.plan-card:hover{transform:translateY(-2px)}
.plan-card.popular{border-color:rgba(99,102,241,.5);box-shadow:0 4px 24px rgba(99,102,241,.1)}
.plan-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);padding:3px 14px;border-radius:99px;background:var(--primary);color:#fff;font-size:11px;font-weight:500}
.plan-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.plan-name{font-size:18px;font-weight:700;margin-bottom:4px}
.plan-desc{font-size:12px;color:var(--muted);margin-bottom:16px}
.plan-price{font-size:32px;font-weight:700;margin-bottom:20px}
.plan-price small{font-size:14px;font-weight:400;color:var(--muted)}
.plan-btn{width:100%;padding:10px;border-radius:var(--radius);font-size:13px;font-weight:500;margin-bottom:20px;transition:all .2s}
.plan-features{list-style:none}
.plan-features li{font-size:13px;padding:4px 0;display:flex;align-items:flex-start;gap:8px}
.plan-features .check{color:var(--accent2);flex-shrink:0}
.plan-features .na{color:var(--muted);opacity:.4;text-decoration:line-through}
.faq-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.faq-grid{grid-template-columns:1fr 1fr}}
.faq-card{padding:20px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border)}
.faq-card h3{font-size:13px;font-weight:600;margin-bottom:8px}
.faq-card p{font-size:13px;color:var(--muted);line-height:1.5}