/* CndCode v4 MEGA - Next-Level Styles */
:root{--bg:#050508;--bg-2:#0a0a10;--surface:#12121c;--surface-2:#1a1a28;--border:rgba(255,255,255,.06);--border-2:rgba(255,255,255,.12);--text:#f0f2f7;--text-2:#c8cad3;--muted:#6b7280;--brand:#8b5cf6;--brand-2:#06b6d4;--brand-3:#ec4899;--ok:#10b981;--warn:#f59e0b;--err:#ef4444;--r:16px;--shadow:0 25px 50px -12px rgba(0,0,0,.5)}
[data-theme="light"]{--bg:#fafbfc;--bg-2:#ffffff;--surface:#ffffff;--surface-2:#f3f4f6;--border:rgba(0,0,0,.08);--border-2:rgba(0,0,0,.14);--text:#111827;--text-2:#374151;--muted:#6b7280;--shadow:0 20px 40px -10px rgba(0,0,0,.12)}
*{margin:0;padding:0;box-sizing:border-box}
html,body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh;overflow-x:hidden}
::selection{background:var(--brand);color:#fff}
.particles{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.particle{position:absolute;width:4px;height:4px;background:var(--brand);border-radius:50%;opacity:.3;animation:float 20s infinite}
@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-100vh) translateX(50px)}}
.shell{position:relative;z-index:1;max-width:1400px;margin:0 auto;padding:20px}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);backdrop-filter:blur(20px);margin-bottom:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem}
.logo-icon{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;font-size:1rem}
.nav-actions{display:flex;gap:8px}
.btn{padding:8px 16px;border-radius:10px;border:1px solid var(--border);background:transparent;color:var(--text-2);font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:6px}
.btn:hover{background:var(--surface-2);border-color:var(--border-2);color:var(--text)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));border:none;color:#fff}
.btn-primary:hover{filter:brightness(1.1)}
.hero{text-align:center;padding:60px 20px 40px}
.hero h1{font-size:clamp(2.5rem,6vw,4rem);font-weight:800;letter-spacing:-2px;line-height:1.1;background:linear-gradient(135deg,var(--text),var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:16px}
.hero p{font-size:1.1rem;color:var(--muted);max-width:600px;margin:0 auto}
.dropzone{margin:40px auto;max-width:900px;position:relative;perspective:1000px;transform-style:preserve-3d;transition:all .4s cubic-bezier(.22,1,.36,1)}
.dropzone::before{content:"";position:absolute;inset:-3px;border-radius:28px;background:conic-gradient(from 0deg,var(--brand),var(--brand-2),var(--brand-3),var(--brand));animation:rotateBorder 8s linear infinite;z-index:0;opacity:0;transition:opacity .4s}
.dropzone:hover::before,.dropzone.active::before{opacity:1}
@keyframes rotateBorder{to{transform:rotate(360deg)}}
.dropzone-inner{position:relative;z-index:1;background:linear-gradient(135deg,rgba(12,12,20,.95),rgba(20,20,32,.95));backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:24px;padding:60px 40px;text-align:center;cursor:pointer;border:2px dashed var(--border);transition:all .4s cubic-bezier(.22,1,.36,1);overflow:hidden}
.dropzone:hover .dropzone-inner{transform:translateY(-8px) rotateX(2deg);border-color:var(--brand);box-shadow:0 30px 60px rgba(0,0,0,.4),0 0 80px rgba(139,92,246,.2)}
.dropzone.active .dropzone-inner{transform:scale(1.02);border-color:var(--brand);background:linear-gradient(135deg,rgba(139,92,246,.15),rgba(6,182,212,.15))}
.dropzone-inner::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(139,92,246,.1),transparent 70%);animation:pulse 3s ease-in-out infinite;opacity:0;transition:opacity .4s}
.dropzone:hover .dropzone-inner::before{opacity:1}
@keyframes pulse{0%,100%{transform:scale(1);opacity:.3}50%{transform:scale(1.1);opacity:.6}}
.dropzone-content{position:relative;z-index:2}
.drop-icon{width:90px;height:90px;border-radius:22px;margin:0 auto 24px;display:grid;place-items:center;position:relative;background:linear-gradient(135deg,rgba(139,92,246,.3),rgba(6,182,212,.25));border:2px solid rgba(255,255,255,.1);box-shadow:0 10px 40px rgba(139,92,246,.3),inset 0 0 30px rgba(139,92,246,.2);animation:float 4s ease-in-out infinite;transition:all .4s}
.dropzone:hover .drop-icon{transform:scale(1.1) rotateY(10deg);box-shadow:0 15px 50px rgba(139,92,246,.5),inset 0 0 40px rgba(139,92,246,.3)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.drop-icon::after{content:"";position:absolute;inset:-20px;background:radial-gradient(circle,rgba(139,92,246,.4),transparent 70%);filter:blur(20px);z-index:-1;animation:glow 2s ease-in-out infinite alternate}
@keyframes glow{from{opacity:.5;transform:scale(.9)}to{opacity:1;transform:scale(1.1)}}
.drop-icon svg{width:40px;height:40px;color:#fff;filter:drop-shadow(0 2px 8px rgba(139,92,246,.6))}
.dropzone h2{font-size:1.6rem;font-weight:800;letter-spacing:-1px;margin-bottom:10px;background:linear-gradient(135deg,#fff,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;position:relative;z-index:2}
.dropzone h2 kbd{font-family:'JetBrains Mono',monospace;font-size:.65em;padding:4px 10px;border-radius:8px;border:1px solid var(--border-2);background:rgba(139,92,246,.15);color:var(--brand);margin:0 4px;box-shadow:0 2px 8px rgba(139,92,246,.2)}
.dropzone .sub{color:var(--muted);font-size:1rem;position:relative;z-index:2;margin-top:8px}
.dropzone .sub b{color:var(--brand);font-weight:700;text-shadow:0 0 20px rgba(139,92,246,.5)}
.chips{margin-top:28px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.chip{font-size:.8rem;font-weight:600;padding:8px 16px;border-radius:24px;background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(6,182,212,.12));border:1px solid var(--border-2);color:var(--text-2);transition:all .3s cubic-bezier(.22,1,.36,1);cursor:pointer;animation:chipBounce .6s ease-out backwards}
.chip:nth-child(1){animation-delay:.1s}
.chip:nth-child(2){animation-delay:.2s}
.chip:nth-child(3){animation-delay:.3s}
.chip:nth-child(4){animation-delay:.4s}
.chip:nth-child(5){animation-delay:.5s}
@keyframes chipBounce{0%{opacity:0;transform:translateY(20px) scale(.8)}60%{transform:translateY(-5px) scale(1.05)}100%{opacity:1;transform:translateY(0) scale(1)}}
.chip:hover{transform:translateY(-4px) scale(1.05);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 24px rgba(139,92,246,.4);border-color:transparent}
.dropzone.active::after{content:"Drop files here! 🎯";position:absolute;inset:0;z-index:10;display:grid;place-items:center;font-size:1.8rem;font-weight:800;color:var(--brand);background:rgba(139,92,246,.1);backdrop-filter:blur(10px);border-radius:24px;animation:fadeIn .3s}
@keyframes confetti{0%{transform:translateY(0) rotate(0deg);opacity:1}100%{transform:translateY(-100vh) rotate(720deg);opacity:0}}
.confetti{position:fixed;width:10px;height:10px;background:var(--brand);border-radius:50%;pointer-events:none;z-index:999;animation:confetti 2s ease-out forwards}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:30px 0}
.stat-card{padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);transition:all .3s}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-2)}
.stat-label{font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin-bottom:8px}
.stat-value{font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.files-section{margin-top:40px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.section-title{font-size:1.5rem;font-weight:700}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.search-box{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--surface);border:1px solid var(--border);border-radius:10px}
.search-box input{background:transparent;border:none;outline:none;color:var(--text);font-size:.9rem;width:200px}
.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.file-card{padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);transition:all .3s;animation:slideUp .4s}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.file-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--border-2)}
.file-header{display:flex;gap:12px;margin-bottom:12px}
.file-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,rgba(139,92,246,.15),rgba(6,182,212,.15));display:grid;place-items:center;font-size:1.5rem}
.file-info{flex:1;min-width:0}
.file-name{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-meta{font-size:.8rem;color:var(--muted);margin-top:4px}
.file-preview{height:140px;border-radius:12px;background:var(--surface-2);margin:12px 0;overflow:hidden;display:grid;place-items:center}
.file-preview img,.file-preview video{width:100%;height:100%;object-fit:cover}
.file-url{padding:10px;background:var(--bg-2);border:1px solid var(--border);border-radius:8px;font-family:'JetBrains Mono',monospace;font-size:.75rem;color:var(--brand);word-break:break-all;margin:12px 0}
.file-actions{display:flex;gap:6px;flex-wrap:wrap}
.file-actions .btn{flex:1;min-width:0;font-size:.8rem;padding:8px 12px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.8);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal.show{display:flex;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-content{background:var(--surface);border:1px solid var(--border-2);border-radius:20px;padding:30px;max-width:500px;width:100%;box-shadow:var(--shadow)}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.modal-title{font-size:1.3rem;font-weight:700}
.close-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:transparent;cursor:pointer;display:grid;place-items:center}
.toast{position:fixed;bottom:20px;right:20px;padding:16px 20px;background:var(--surface);border:1px solid var(--border-2);border-radius:12px;box-shadow:var(--shadow);z-index:200;transform:translateX(400px);transition:transform .3s}
.toast.show{transform:translateX(0)}
.toast.success{border-color:var(--ok);background:rgba(16,185,129,.1)}
.toast.error{border-color:var(--err);background:rgba(239,68,68,.1)}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state-icon{font-size:4rem;margin-bottom:16px;opacity:.5}
@media (max-width:768px){.hero h1{font-size:2rem}.file-grid{grid-template-columns:1fr}.toolbar{width:100%}.search-box input{width:100%}}


/* ═══════════════════════════════════════════════════════════════
   V4 MEGA UPGRADES - Advanced Features
   ═══════════════════════════════════════════════════════════════ */

/* View Mode Switcher */
.view-modes{display:flex;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:4px}
.view-mode-btn{padding:8px 12px;border:none;background:transparent;color:var(--muted);cursor:pointer;border-radius:8px;transition:all .2s;font-size:.85rem}
.view-mode-btn.active{background:var(--brand);color:#fff}
.view-mode-btn:hover:not(.active){background:var(--surface-2)}

/* List View */
.file-list{display:flex;flex-direction:column;gap:12px}
.file-list .file-card{display:flex;align-items:center;gap:16px;padding:16px}
.file-list .file-icon{width:40px;height:40px;font-size:1.2rem}
.file-list .file-preview{display:none}
.file-list .file-info{flex:1}
.file-list .file-actions{flex-wrap:nowrap}

/* Timeline View */
.timeline-view{position:relative;padding-left:40px}
.timeline-view::before{content:"";position:absolute;left:20px;top:0;bottom:0;width:2px;background:var(--border-2)}
.timeline-item{position:relative;margin-bottom:30px}
.timeline-item::before{content:"";position:absolute;left:-28px;top:20px;width:16px;height:16px;border-radius:50%;background:var(--brand);border:3px solid var(--bg);z-index:2}
.timeline-date{font-size:.85rem;color:var(--muted);margin-bottom:12px;font-weight:600}

/* Upload Queue */
.upload-queue{position:fixed;bottom:20px;right:20px;width:360px;max-height:400px;background:var(--surface);border:1px solid var(--border-2);border-radius:16px;box-shadow:var(--shadow);z-index:150;overflow:hidden;transform:translateY(500px);transition:transform .3s}
.upload-queue.show{transform:translateY(0)}
.queue-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.queue-title{font-weight:700;font-size:.95rem}
.queue-items{max-height:300px;overflow-y:auto;padding:12px}
.queue-item{padding:12px;background:var(--surface-2);border-radius:10px;margin-bottom:8px}
.queue-item-header{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.queue-item-icon{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,rgba(139,92,246,.2),rgba(6,182,212,.2));display:grid;place-items:center;font-size:1rem}
.queue-item-info{flex:1;min-width:0}
.queue-item-name{font-size:.85rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.queue-item-size{font-size:.75rem;color:var(--muted)}
.queue-progress{height:4px;background:var(--border);border-radius:2px;overflow:hidden;margin-top:8px}
.queue-progress-bar{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s;border-radius:2px}
.queue-status{font-size:.75rem;margin-top:6px;display:flex;align-items:center;justify-content:space-between}
.queue-status.success{color:var(--ok)}
.queue-status.error{color:var(--err)}

/* Analytics Dashboard */
.analytics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin:30px 0}
.analytics-card{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);position:relative;overflow:hidden}
.analytics-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.analytics-label{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.analytics-value{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}
.analytics-change{font-size:.85rem;color:var(--ok);display:flex;align-items:center;gap:4px}
.analytics-change.negative{color:var(--err)}
.analytics-chart{height:80px;margin-top:16px}

/* Tags System */
.tags-container{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}
.tag{padding:4px 10px;background:var(--surface-2);border:1px solid var(--border);border-radius:20px;font-size:.75rem;color:var(--text-2);display:inline-flex;align-items:center;gap:4px;cursor:pointer;transition:all .2s}
.tag:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.tag-remove{cursor:pointer;opacity:.6}
.tag-remove:hover{opacity:1}
.tag-input{padding:8px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;font-size:.85rem;color:var(--text);outline:none;transition:border-color .2s}
.tag-input:focus{border-color:var(--brand)}

/* Favorites */
.favorite-btn{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;background:var(--surface-2);border:1px solid var(--border);display:grid;place-items:center;cursor:pointer;transition:all .2s;z-index:10}
.favorite-btn:hover{background:var(--brand);border-color:var(--brand);transform:scale(1.1)}
.favorite-btn.active{background:var(--warn);border-color:var(--warn)}

/* Lightbox Gallery */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.95);z-index:200;display:none;align-items:center;justify-content:center;padding:40px}
.lightbox.show{display:flex;animation:fadeIn .3s}
.lightbox-content{max-width:90vw;max-height:90vh;position:relative}
.lightbox-image{max-width:100%;max-height:90vh;border-radius:12px;box-shadow:0 30px 60px rgba(0,0,0,.5)}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;background:rgba(255,255,255,.1);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:50%;display:grid;place-items:center;cursor:pointer;transition:all .2s;font-size:1.5rem;color:#fff}
.lightbox-nav:hover{background:rgba(255,255,255,.2)}
.lightbox-prev{left:-60px}
.lightbox-next{right:-60px}
.lightbox-close{position:absolute;top:-50px;right:0;width:40px;height:40px;background:rgba(255,255,255,.1);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:50%;display:grid;place-items:center;cursor:pointer;color:#fff;font-size:1.2rem}
.lightbox-close:hover{background:rgba(255,255,255,.2)}

/* Color Theme Picker */
.theme-picker{display:flex;gap:8px;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:12px}
.theme-color{width:32px;height:32px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all .2s;position:relative}
.theme-color:hover{transform:scale(1.1)}
.theme-color.active{border-color:#fff;box-shadow:0 0 0 2px var(--brand)}
.theme-color.purple{background:linear-gradient(135deg,#8b5cf6,#06b6d4)}
.theme-color.blue{background:linear-gradient(135deg,#3b82f6,#06b6d4)}
.theme-color.green{background:linear-gradient(135deg,#10b981,#34d399)}
.theme-color.orange{background:linear-gradient(135deg,#f59e0b,#ef4444)}
.theme-color.pink{background:linear-gradient(135deg,#ec4899,#f43f5e)}

/* File Actions Menu */
.file-menu{position:absolute;top:12px;right:12px;z-index:10}
.file-menu-btn{width:32px;height:32px;border-radius:8px;background:var(--surface-2);border:1px solid var(--border);display:grid;place-items:center;cursor:pointer;transition:all .2s}
.file-menu-btn:hover{background:var(--brand);color:#fff}
.file-menu-dropdown{position:absolute;top:100%;right:0;margin-top:4px;background:var(--surface);border:1px solid var(--border-2);border-radius:10px;box-shadow:var(--shadow);min-width:160px;display:none;overflow:hidden}
.file-menu-dropdown.show{display:block;animation:slideDown .2s}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
.file-menu-item{padding:10px 14px;font-size:.85rem;cursor:pointer;transition:background .2s;display:flex;align-items:center;gap:8px}
.file-menu-item:hover{background:var(--surface-2)}

/* Bulk Selection */
.bulk-actions{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--surface);border:1px solid var(--border-2);border-radius:16px;padding:16px 24px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;z-index:150;transition:transform .3s}
.bulk-actions.show{transform:translateX(-50%) translateY(0)}
.bulk-count{font-weight:700;color:var(--brand)}
.file-checkbox{position:absolute;top:12px;left:12px;width:24px;height:24px;border-radius:6px;background:var(--surface-2);border:2px solid var(--border);cursor:pointer;display:none;align-items:center;justify-content:center;z-index:10}
.file-card:hover .file-checkbox,.file-checkbox.checked{display:flex}
.file-checkbox.checked{background:var(--brand);border-color:var(--brand)}

/* PWA Install Prompt */
.pwa-prompt{position:fixed;bottom:20px;left:20px;right:20px;max-width:400px;background:var(--surface);border:1px solid var(--border-2);border-radius:16px;padding:20px;box-shadow:var(--shadow);z-index:150;transform:translateY(200px);transition:transform .3s}
.pwa-prompt.show{transform:translateY(0)}
.pwa-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;font-size:1.5rem;margin-bottom:12px}

/* Loading States */
.skeleton{background:linear-gradient(90deg,var(--surface) 25%,var(--surface-2) 50%,var(--surface) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skeleton-card{height:300px;border-radius:var(--r)}
.skeleton-text{height:16px;border-radius:4px;margin-bottom:8px}

/* Responsive Enhancements */
@media (max-width:768px){
  .upload-queue{width:calc(100% - 40px);right:20px}
  .lightbox-nav{display:none}
  .analytics-grid{grid-template-columns:1fr}
  .view-modes{width:100%}
  .bulk-actions{left:20px;right:20px;transform:translateX(0) translateY(100px)}
  .bulk-actions.show{transform:translateX(0) translateY(0)}
}