*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #0b0f19;--color-surface: rgba(25, 33, 50, .6);--color-surface-hover: rgba(35, 45, 65, .8);--color-white: #ffffff;--color-text-main: #f8fafc;--color-text-muted: #94a3b8;--color-primary: #8b5cf6;--color-primary-dark: #7c3aed;--color-primary-light: #a78bfa;--color-secondary: #ec4899;--color-accent: #3b82f6;--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--color-border: rgba(255, 255, 255, .08);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 5rem;--radius-sm: .375rem;--radius-md: .75rem;--radius-lg: 1.25rem;--radius-xl: 2rem;--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .3);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .4);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .5);--glow-primary: 0 0 20px rgba(139, 92, 246, .4);--glow-secondary: 0 0 20px rgba(236, 72, 153, .4);--transition: all .3s cubic-bezier(.4, 0, .2, 1)}body{font-family:var(--font-family);font-size:16px;line-height:1.6;color:var(--color-text-main);background-color:var(--color-bg);background-image:radial-gradient(circle at 15% 50%,rgba(139,92,246,.15) 0%,transparent 50%),radial-gradient(circle at 85% 30%,rgba(236,72,153,.1) 0%,transparent 50%);background-attachment:fixed;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;width:100%}.app{min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;width:100%}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-md)}.glass{background:var(--color-surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--color-border);box-shadow:var(--shadow-md)}.gradient-text{background:linear-gradient(135deg,#a78bfa,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header{position:sticky;top:0;z-index:100;background:#0b0f19cc;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border);padding:var(--space-md) 0}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;color:var(--color-white);display:flex;align-items:center;gap:var(--space-xs)}.logo span{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.nav{display:flex;gap:var(--space-xl)}.nav-link{color:var(--color-text-muted);font-weight:500;text-decoration:none;transition:var(--transition);position:relative}.nav-link:hover{color:var(--color-white)}.nav-link:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--color-primary);transition:var(--transition)}.nav-link:hover:after{width:100%}.hero{padding:var(--space-3xl) 0 var(--space-2xl);text-align:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(139,92,246,.15) 0%,transparent 60%);z-index:-1;pointer-events:none}.hero-content{max-width:800px;margin:0 auto}.hero-title{font-size:3.5rem;font-weight:800;margin-bottom:var(--space-md);line-height:1.1;letter-spacing:-.02em}.hero-subtitle{font-size:1.25rem;color:var(--color-text-muted);line-height:1.6;max-width:600px;margin:0 auto}.main-content{flex:1;padding:0 0 var(--space-3xl)}.upload-zone{margin-bottom:var(--space-2xl);position:relative;z-index:10}.upload-box{background:#11182799;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:2px dashed rgba(139,92,246,.3);border-radius:var(--radius-xl);padding:var(--space-3xl) var(--space-xl);text-align:center;transition:var(--transition);cursor:pointer;position:relative;overflow:hidden}.upload-box:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at center,rgba(139,92,246,.1) 0%,transparent 70%);opacity:0;transition:var(--transition)}.upload-box:hover:not(.disabled){border-color:var(--color-primary);transform:translateY(-4px);box-shadow:var(--glow-primary)}.upload-box:hover:not(.disabled):before{opacity:1}.upload-box.drag-active{border-color:var(--color-secondary);background:#ec48990d;transform:scale(1.02);box-shadow:var(--glow-secondary)}.upload-box.disabled{opacity:.5;cursor:not-allowed}.upload-content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:var(--space-md)}.upload-icon{color:var(--color-primary);filter:drop-shadow(0 0 8px rgba(139,92,246,.5))}.upload-title{font-size:1.5rem;font-weight:700;color:var(--color-white)}.upload-subtitle{color:var(--color-text-muted);font-size:1.125rem}.upload-info{font-size:.875rem;color:var(--color-text-muted);background:#ffffff0d;padding:4px 12px;border-radius:20px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:.875rem 1.75rem;font-size:1rem;font-weight:600;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1;position:relative;overflow:hidden}.btn:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(rgba(255,255,255,.2),transparent,transparent);transform:rotate(45deg);transition:var(--transition);opacity:0}.btn:hover:not(:disabled):after{opacity:1;transform:rotate(45deg) translate(50%,50%)}.btn:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(1)}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:var(--color-white);box-shadow:0 4px 15px #7c3aed66}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #7c3aed99}.btn-secondary{background:#ffffff0d;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--color-white);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:#ffffff1a;border-color:#fff3;transform:translateY(-2px)}.btn-success{background:linear-gradient(135deg,var(--color-success),#059669);color:var(--color-white);box-shadow:0 4px 15px #10b98166}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #10b98199}.btn-icon{width:40px;height:40px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-md);background:#ffffff0d;border:1px solid var(--color-border);cursor:pointer;transition:var(--transition);color:var(--color-text-muted)}.btn-icon:hover{background:#ffffff1a;transform:scale(1.1);color:var(--color-white)}.btn-download:hover{color:var(--color-success);border-color:var(--color-success);background:#10b9811a}.btn-remove:hover{color:var(--color-error);border-color:var(--color-error);background:#ef44441a}.format-selector{display:flex;align-items:center;justify-content:center;gap:var(--space-lg);margin:var(--space-xl) auto var(--space-3xl);padding:var(--space-xl);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);max-width:700px}.format-box{display:flex;flex-direction:column;align-items:center;gap:var(--space-sm);flex:1}.format-label{font-size:.875rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.1em;font-weight:600}.format-value{font-size:1.25rem;font-weight:700;color:var(--color-white);padding:.5rem 1rem;background:#0003;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.05)}select.format-value{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;padding-right:2.5rem;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;background-size:1rem;transition:var(--transition)}select.format-value:hover,select.format-value:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px #8b5cf633;outline:none}select.format-value option{background:#111827;color:#fff}.format-arrow{color:var(--color-primary);font-size:2rem;display:flex;align-items:center;justify-content:center;background:#8b5cf61a;width:48px;height:48px;border-radius:50%;box-shadow:var(--glow-primary)}.file-list{margin:var(--space-2xl) 0}.file-list-header{margin-bottom:var(--space-lg);display:flex;justify-content:space-between;align-items:center}.file-list-header h3{font-size:1.25rem;font-weight:700;color:var(--color-white);display:flex;align-items:center;gap:var(--space-sm)}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-xl)}.file-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:relative}.file-card:hover{transform:translateY(-4px);border-color:#fff3;box-shadow:var(--shadow-lg),0 0 15px #ffffff0d}.file-preview{position:relative;width:100%;height:200px;background:#000;overflow:hidden}.file-preview img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.file-card:hover .file-preview img{transform:scale(1.05)}.file-preview:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(to bottom,#0000 50%,#0b0f19);pointer-events:none}.status-badge{position:absolute;top:var(--space-md);right:var(--space-md);display:flex;align-items:center;gap:var(--space-xs);padding:.375rem .875rem;border-radius:2rem;font-size:.75rem;font-weight:700;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.1);box-shadow:0 4px 10px #0000004d;text-transform:uppercase;letter-spacing:.05em;z-index:2}.status-pending{color:var(--color-text-muted)}.status-converting{color:var(--color-warning);border-color:#f59e0b4d}.status-success{color:var(--color-success);border-color:#10b9814d;box-shadow:0 0 10px #10b9814d}.status-error{color:var(--color-error);border-color:#ef44444d}.file-info{padding:var(--space-md);position:relative;z-index:2;margin-top:-2rem}.file-name{font-weight:600;color:var(--color-white);font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:var(--space-sm);text-shadow:0 2px 4px rgba(0,0,0,.5)}.file-meta{display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:var(--color-text-muted)}.file-size-group{display:flex;align-items:center;gap:var(--space-xs)}.compression-ratio{color:var(--color-success);font-weight:700;background:#10b98126;padding:.2rem .5rem;border-radius:var(--radius-sm);border:1px solid rgba(16,185,129,.3)}.file-actions{display:flex;gap:var(--space-sm);padding:var(--space-md);padding-top:var(--space-xs);justify-content:flex-end;border-top:1px solid rgba(255,255,255,.05);margin-top:var(--space-sm)}.action-buttons{display:flex;gap:var(--space-md);justify-content:center;margin-top:var(--space-2xl);flex-wrap:wrap;padding:var(--space-lg);background:#0003;border-radius:var(--radius-xl);border:1px solid rgba(255,255,255,.05)}.info-section{background:#11182766;padding:var(--space-3xl) 0;border-top:1px solid var(--color-border);position:relative}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-2xl)}.info-card{text-align:center;padding:var(--space-xl);background:#ffffff05;border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-xl);transition:var(--transition)}.info-card:hover{transform:translateY(-5px);background:#ffffff0a;border-color:#8b5cf64d;box-shadow:0 10px 30px -10px #8b5cf626}.info-icon{color:var(--color-primary);margin-bottom:var(--space-lg);display:inline-flex;padding:var(--space-md);background:#8b5cf61a;border-radius:50%;box-shadow:inset 0 0 20px #8b5cf633}.info-card h3{font-size:1.25rem;margin-bottom:var(--space-sm);color:var(--color-white);font-weight:700}.info-card p{color:var(--color-text-muted);line-height:1.6;font-size:.95rem}.footer{background:#06090f;color:var(--color-text-muted);padding:var(--space-2xl) 0;margin-top:auto;border-top:1px solid var(--color-border)}.footer-content{display:flex;justify-content:space-between;align-items:center}.footer-nav{display:flex;gap:var(--space-lg)}.footer-nav a{color:var(--color-text-muted);text-decoration:none;transition:var(--transition)}.footer-nav a:hover{color:var(--color-white)}.toast{position:fixed;bottom:var(--space-xl);right:var(--space-xl);background:#111827e6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:var(--space-md) var(--space-lg);border-radius:var(--radius-lg);box-shadow:0 10px 40px #00000080;border:1px solid var(--color-border);display:flex;align-items:center;gap:var(--space-md);z-index:1000;animation:slideIn .4s cubic-bezier(.175,.885,.32,1.275);max-width:400px}.toast-show{display:flex}.toast-success{border-left:4px solid var(--color-success)}.toast-error{border-left:4px solid var(--color-error)}.toast-icon{flex-shrink:0}.toast-success .toast-icon{color:var(--color-success)}.toast-error .toast-icon{color:var(--color-error)}.toast-message{color:var(--color-white);font-weight:500}@keyframes slideIn{0%{transform:translate(120%) scale(.9);opacity:0}to{transform:translate(0) scale(1);opacity:1}}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.1);border-top-color:currentColor;border-radius:50%;animation:spin .8s cubic-bezier(.4,0,.2,1) infinite}.status-converting .spinner{border-top-color:var(--color-warning)}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.1rem}.nav{gap:var(--space-md)}.format-selector{flex-direction:column;gap:var(--space-lg);padding:var(--space-lg)}.format-box{width:100%}.format-arrow{transform:rotate(90deg)}.file-grid,.info-grid{grid-template-columns:1fr}.footer-content{flex-direction:column;gap:var(--space-lg);text-align:center}.action-buttons{flex-direction:column}.action-buttons .btn{width:100%}.toast{bottom:var(--space-md);right:var(--space-md);left:var(--space-md);max-width:none}}@media (max-width: 480px){.header-content{flex-direction:column;gap:var(--space-md)}.logo{font-size:1.25rem}.upload-box{padding:var(--space-2xl) var(--space-lg)}.file-preview{height:160px}.hero-title{font-size:2rem}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--color-bg)}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#fff3}