:root{--color-primary: #f97316;--color-primary-dark: #ea580c;--color-primary-light: #fed7aa;--color-secondary: #14b8a6;--color-secondary-dark: #0d9488;--color-secondary-light: #ccfbf1;--color-bg: #f8fafc;--color-surface: #ffffff;--color-text: #1e293b;--color-text-secondary: #64748b;--color-border: #e2e8f0;--color-danger: #ef4444;--color-warning: #f59e0b;--color-info: #3b82f6;--radius: 12px;--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .06);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1)}@media(prefers-color-scheme:dark){:root{--color-bg: #0f172a;--color-surface: #1e293b;--color-text: #f1f5f9;--color-text-secondary: #94a3b8;--color-border: #334155;--color-primary-light: #431407;--color-secondary-light: #042f2e;--shadow: 0 1px 3px rgba(0, 0, 0, .4), 0 1px 2px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .5)}}html.dark{--color-bg: #0f172a;--color-surface: #1e293b;--color-text: #f1f5f9;--color-text-secondary: #94a3b8;--color-border: #334155;--color-primary-light: #431407;--color-secondary-light: #042f2e;--shadow: 0 1px 3px rgba(0, 0, 0, .4), 0 1px 2px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .5)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6}.loading{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.2rem;color:var(--color-text-secondary)}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--color-surface);border-right:1px solid var(--color-border);padding:1.5rem 0;display:flex;flex-direction:column}.sidebar-logo{padding:0 1.5rem 1.5rem;font-size:1.5rem;font-weight:700;color:var(--color-primary);border-bottom:1px solid var(--color-border);margin-bottom:1rem}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:.25rem;padding:0 .75rem}.sidebar-link{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:8px;text-decoration:none;color:var(--color-text-secondary);font-weight:500;font-size:.95rem;transition:all .15s}.sidebar-link:hover{background:var(--color-primary-light);color:var(--color-primary-dark)}.sidebar-link.active{background:var(--color-primary);color:#fff}.sidebar-group{display:flex;flex-direction:column}.sidebar-group-toggle{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:8px;border:none;background:none;color:var(--color-text-secondary);font-weight:500;font-size:.95rem;cursor:pointer;width:100%;transition:all .15s}.sidebar-group-toggle:hover{background:var(--color-primary-light);color:var(--color-primary-dark)}.sidebar-group-toggle.open{color:var(--color-primary-dark);font-weight:600}.sidebar-chevron{transition:transform .2s}.sidebar-chevron.rotated{transform:rotate(180deg)}.sidebar-group-children{display:flex;flex-direction:column;gap:.125rem;padding-left:.5rem}.sidebar-link-child{font-size:.875rem;padding:.5rem .75rem .5rem 1.5rem}.sidebar-footer{padding:1rem 1.5rem;border-top:1px solid var(--color-border)}.main-content{flex:1;padding:2rem;overflow-y:auto}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.card-title{font-size:1.1rem;font-weight:600}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.6rem 1.2rem;border:none;border-radius:8px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .15s}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-border);color:var(--color-text)}.btn-danger{background:var(--color-danger);color:#fff}.btn-sm{padding:.4rem .8rem;font-size:.85rem}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.4rem;font-weight:500;font-size:.9rem;color:var(--color-text-secondary)}.form-input{width:100%;padding:.6rem .8rem;border:1px solid var(--color-border);border-radius:8px;font-size:.95rem;font-family:inherit;transition:border-color .15s}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{display:flex;align-items:center;gap:1rem}.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center}.stat-value{font-size:1.5rem;font-weight:700}.stat-label{font-size:.85rem;color:var(--color-text-secondary)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--color-border)}.table th{font-weight:600;color:var(--color-text-secondary);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.media-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.media-card{display:flex;flex-direction:column;gap:.75rem}.media-image{width:100%;height:180px;object-fit:cover;border-radius:10px;border:1px solid var(--color-border)}.media-meta{display:flex;flex-direction:column;gap:.2rem}.media-title{font-weight:600}.media-subtitle{font-size:.85rem;color:var(--color-text-secondary)}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#d1fae5,#f8fafc)}.auth-card{width:100%;max-width:440px;padding:2.5rem}.auth-title{font-size:1.8rem;font-weight:700;text-align:center;margin-bottom:.5rem;color:var(--color-primary)}.auth-subtitle{text-align:center;color:var(--color-text-secondary);margin-bottom:2rem}.auth-footer{text-align:center;margin-top:1.5rem;font-size:.9rem;color:var(--color-text-secondary)}.auth-footer a{color:var(--color-primary);text-decoration:none;font-weight:500}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.page-header-left{display:flex;align-items:center;gap:.5rem}.btn-back{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:8px;background:var(--color-gray-100, #f3f4f6);color:var(--color-gray-700, #374151);cursor:pointer;transition:background .15s;flex-shrink:0}.btn-back:hover{background:var(--color-gray-200, #e5e7eb)}.page-title{font-size:1.5rem;font-weight:700}.chat-container{display:flex;flex-direction:column;height:calc(100vh - 6rem)}.chat-messages{flex:1;overflow-y:auto;padding:1rem 0}.chat-message{display:flex;gap:.75rem;margin-bottom:1rem;max-width:80%}.chat-message.user{margin-left:auto;flex-direction:row-reverse}.chat-bubble{padding:.75rem 1rem;border-radius:12px;font-size:.95rem;line-height:1.5}.chat-message.assistant .chat-bubble{background:var(--color-primary-light);color:var(--color-text)}.chat-message.user .chat-bubble{background:var(--color-primary);color:#fff}.typing-cursor{display:inline-block;width:2px;height:1em;background:currentColor;margin-left:2px;vertical-align:text-bottom;animation:blink-cursor .7s step-end infinite}@keyframes blink-cursor{0%,to{opacity:1}50%{opacity:0}}.chat-input-area{display:flex;gap:.75rem;padding-top:1rem;border-top:1px solid var(--color-border)}.chat-input-area input{flex:1}@media(max-width:768px){.sidebar{display:none}.main-content{padding:1rem}}@keyframes spin-anim{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spin{animation:spin-anim 1s linear infinite}