:root{--color-primary:#a78bfa;--color-bg-primary:#fff;--color-text-primary:hsl(240,20%,15%);--gradient-primary:linear-gradient(135deg,#a78bfa,#c4b5fd);--spacing-sm:.75rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--font-family:'Inter',sans-serif;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--radius-lg:.75rem;--radius-xl:1rem;--shadow-sm:0 1px 2px rgba(167,139,250,.05);--shadow-lg:0 10px 15px -3px rgba(167,139,250,.1);--transition-base:250ms cubic-bezier(.4,0,.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);background:#f8f9fc;color:var(--color-text-primary)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.global-header{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:100}.header-content{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) 0}.logo{display:flex;align-items:center;gap:var(--spacing-sm)}.logo-text{font-size:var(--font-size-lg);font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.main-nav{display:flex;gap:var(--spacing-sm)}.nav-item{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);text-decoration:none;color:#64748b;transition:all var(--transition-base)}.nav-item.active{color:var(--color-primary);font-weight:600;background:rgba(167,139,250,.08)}.nav-item.disabled{opacity:.5;cursor:not-allowed}.badge{font-size:.75rem;padding:2px 8px;border-radius:999px;background:#e5e7eb;color:#64748b;margin-left:4px}.main-content{padding:var(--spacing-2xl) 0;min-height:calc(100vh - 80px)}.page-header{text-align:center;margin-bottom:var(--spacing-2xl)}.page-title{font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.page-subtitle{color:#64748b;margin-top:var(--spacing-sm)}.dropzone{border:2px dashed #cbd5e1;border-radius:var(--radius-xl);padding:var(--spacing-2xl);background:#fff;cursor:pointer;transition:all var(--transition-base);text-align:center}.dropzone:hover{border-color:var(--color-primary);box-shadow:var(--shadow-lg)}.dropzone-title{font-size:var(--font-size-xl);margin-bottom:var(--spacing-sm)}.dropzone-text{color:#64748b}.dropzone-hint{font-size:.875rem;color:#94a3b8;margin-top:var(--spacing-sm)}.thumbnail-section{animation:slideUp .35s ease-out}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.section-header{text-align:center;margin-bottom:var(--spacing-xl)}.section-title{font-size:var(--font-size-2xl);font-weight:700}.section-subtitle{color:#64748b;font-size:.875rem}.thumbnail-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.thumbnail-item{position:relative;aspect-ratio:1;background:#fff;border:2px solid #e5e7eb;border-radius:var(--radius-lg);overflow:hidden;cursor:grab;transition:all var(--transition-base)}.thumbnail-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--color-primary)}.thumbnail-image{width:100%;height:100%;object-fit:cover}.thumbnail-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,transparent,rgba(0,0,0,.7));display:flex;flex-direction:column;justify-content:space-between;padding:var(--spacing-sm);opacity:0;transition:opacity var(--transition-base)}.thumbnail-item:hover .thumbnail-overlay{opacity:1}.thumbnail-delete{align-self:flex-end;width:32px;height:32px;border:none;border-radius:8px;background:rgba(255,255,255,.95);color:#ef4444;cursor:pointer;font-size:20px;transition:all .15s}.thumbnail-delete:hover{background:#ef4444;color:#fff}.thumbnail-name{color:#fff;font-size:.75rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thumbnail-order{position:absolute;top:8px;left:8px;width:28px;height:28px;border-radius:8px;background:var(--gradient-primary);color:#fff;font-size:.875rem;font-weight:700;display:flex;align-items:center;justify-content:center}.action-bar{display:flex;justify-content:center;gap:var(--spacing-md)}.btn{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);border:none;border-radius:var(--radius-lg);font-family:var(--font-family);font-size:var(--font-size-base);font-weight:600;cursor:pointer;transition:all var(--transition-base)}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn-secondary{background:#fff;color:var(--color-text-primary);border:2px solid #e5e7eb}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary)}.loading-overlay{position:fixed;inset:0;background:rgba(248,249,252,.95);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;z-index:200}.loading-overlay.active{display:flex}.spinner{width:64px;height:64px;border:4px solid #e5e7eb;border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto var(--spacing-lg)}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:var(--font-size-xl);font-weight:600}.toast-container{position:fixed;top:var(--spacing-xl);right:var(--spacing-xl);z-index:300;display:flex;flex-direction:column;gap:var(--spacing-sm)}.toast{min-width:300px;padding:var(--spacing-md) var(--spacing-lg);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:var(--spacing-md);animation:slideIn .25s ease-out}@keyframes slideIn{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}.toast.success{border-left:4px solid #10b981}.toast.error{border-left:4px solid #ef4444}.toast.warning{border-left:4px solid #f59e0b}.toast-icon{width:24px;flex-shrink:0;font-weight:700;font-size:18px}.toast-message{flex:1;font-size:.875rem;font-weight:500}