:root{--bg-primary: #f8fafc;--bg-secondary: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #f8fafc;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-light: #eff6ff;--accent-border: #bfdbfe;--border: #e2e8f0;--border-hover: #cbd5e1;--danger: #ef4444;--danger-hover: #dc2626;--danger-light: #fef2f2;--danger-border: #fecaca;--success: #10b981;--success-light: #ecfdf5;--success-border: #a7f3d0;--warning: #f59e0b;--warning-light: #fffbeb;--warning-border: #fde68a;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -2px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .08);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 8px 10px -6px rgba(0, 0, 0, .08);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-family);min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}#root{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1040px;margin:0 auto;padding:2.5rem 1.5rem;width:100%;flex:1;display:flex;flex-direction:column}.presenter-container{max-width:1080px}.app-navbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}.navbar-brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;cursor:pointer}.navbar-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#2563eb,#38bdf8);color:#fff;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.25rem;box-shadow:0 4px 10px #2563eb40}.navbar-title{font-size:1.5rem;font-weight:800;color:var(--text-primary);letter-spacing:-.03em}.navbar-title span{color:var(--accent)}.navbar-badge{font-size:.75rem;font-weight:600;background:var(--accent-light);color:var(--accent);padding:.25rem .65rem;border-radius:9999px;border:1px solid var(--accent-border)}.hero-section{text-align:center;margin:2.5rem 0 3.5rem}.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:var(--accent-light);border:1px solid var(--accent-border);color:var(--accent);font-size:.85rem;font-weight:600;padding:.35rem 1rem;border-radius:9999px;margin-bottom:1.25rem}.hero-title{font-size:clamp(2rem,5vw,3.25rem);font-weight:900;line-height:1.15;letter-spacing:-.04em;color:var(--text-primary);margin-bottom:1rem}.hero-title span{background:linear-gradient(135deg,#2563eb,#0284c7);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.15rem;color:var(--text-secondary);max-width:620px;margin:0 auto;line-height:1.6}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.75rem;width:100%}@media (max-width: 720px){.mode-grid{grid-template-columns:1fr}}.mode-card-modern{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.25rem 2rem;cursor:pointer;text-align:left;transition:all .25s cubic-bezier(.16,1,.3,1);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;position:relative;overflow:hidden}.mode-card-modern:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-xl)}.mode-card-icon-wrap{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:1.5rem;transition:transform .2s}.mode-card-modern:hover .mode-card-icon-wrap{transform:scale(1.08)}.icon-presenter{background:#eff6ff;color:#2563eb;border:1px solid #bfdbfe}.icon-monitor{background:#f0fdf4;color:#16a34a;border:1px solid #bbf7d0}.mode-card-tag{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:.4rem}.mode-card-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:.65rem}.mode-card-desc{color:var(--text-secondary);font-size:.95rem;line-height:1.55;margin-bottom:1.75rem;flex:1}.mode-card-action{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:.95rem;color:var(--accent)}.mode-card-action svg{transition:transform .2s}.mode-card-modern:hover .mode-card-action svg{transform:translate(4px)}.page-nav-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.btn-back{display:inline-flex;align-items:center;gap:.5rem;background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);padding:.55rem 1rem;border-radius:var(--radius-sm);cursor:pointer;font-size:.875rem;font-weight:600;transition:all .2s}.btn-back:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--border-hover)}.tabs-segmented{display:inline-flex;background:#e2e8f0;padding:.35rem;border-radius:var(--radius-md);gap:.35rem;margin-bottom:1.75rem}.tab-pill{display:inline-flex;align-items:center;gap:.5rem;background:transparent;border:none;color:var(--text-secondary);padding:.6rem 1.25rem;font-size:.95rem;font-weight:600;cursor:pointer;border-radius:var(--radius-sm);transition:all .2s}.tab-pill:hover:not(.disabled):not(.active){color:var(--text-primary)}.tab-pill.active{background:var(--bg-card);color:var(--accent);box-shadow:var(--shadow-sm)}.tab-pill.disabled{opacity:.5;cursor:not-allowed}.presenter-grid-modern{display:grid;grid-template-columns:1fr 1.2fr;gap:1.75rem;align-items:start}@media (max-width: 860px){.presenter-grid-modern{grid-template-columns:1fr}}.card-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow-sm)}.card-box-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--border)}.card-box-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:.5rem}.pairing-form-modern{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem}.pairing-label{font-size:.875rem;font-weight:600;color:var(--text-secondary)}.pairing-input-row{display:flex;gap:.6rem}.pairing-input-field{flex:1;background:#f8fafc;border:2px solid var(--border);border-radius:var(--radius-md);padding:.75rem 1rem;color:var(--text-primary);font-size:1.35rem;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:800;letter-spacing:.15em;text-align:center;transition:all .2s}.pairing-input-field:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px #2563eb26}.pairing-input-field:disabled{background:#f1f5f9;cursor:not-allowed;opacity:.7}.btn-pair-submit{background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);padding:0 1.5rem;font-weight:700;font-size:.95rem;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;justify-content:center;min-width:100px}.btn-pair-submit:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 4px 12px #2563eb4d}.btn-pair-submit:disabled{background:#cbd5e1;color:#64748b;cursor:not-allowed}.monitor-list-wrap{margin-top:1rem}.monitor-list-title{font-size:.9rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.75rem;display:flex;justify-content:space-between}.monitor-items{list-style:none;display:flex;flex-direction:column;gap:.65rem}.monitor-item-card{display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border:1px solid var(--border);border-radius:var(--radius-md);padding:.75rem 1rem;transition:all .2s}.monitor-item-card:hover{background:#f1f5f9;border-color:var(--border-hover)}.monitor-card-left{display:flex;align-items:center;gap:.75rem}.status-indicator{width:10px;height:10px;border-radius:50%;position:relative}.status-indicator.online{background:var(--success);box-shadow:0 0 0 3px #10b98133}.status-indicator.connecting{background:var(--warning);box-shadow:0 0 0 3px #f59e0b33;animation:pulse-warn 1.5s infinite}.monitor-card-name{font-weight:700;font-size:.95rem;color:var(--text-primary)}.badge-live-stream{font-size:.7rem;font-weight:700;background:var(--danger-light);color:var(--danger);border:1px solid var(--danger-border);padding:.15rem .45rem;border-radius:4px}.btn-disconnect-sm{background:transparent;color:var(--danger);border:1px solid var(--danger-border);padding:.35rem .75rem;border-radius:var(--radius-sm);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .2s}.btn-disconnect-sm:hover{background:var(--danger);color:#fff;border-color:var(--danger)}.empty-monitors-placeholder{text-align:center;padding:2rem 1rem;background:#f8fafc;border:1px dashed var(--border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:.9rem}.screen-share-hero{display:flex;flex-direction:column;gap:1.25rem}.share-status-panel{background:#f8fafc;border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.5rem 1.5rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}.share-status-panel.active{background:#f0fdf4;border-color:#bbf7d0}.share-icon-wrap{width:64px;height:64px;background:var(--accent-light);color:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.75rem}.share-status-panel.active .share-icon-wrap{background:#dcfce7;color:#16a34a}.share-status-title{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.share-status-desc{font-size:.95rem;color:var(--text-secondary);max-width:400px;line-height:1.5}.btn-action-primary{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);padding:.85rem 1.75rem;font-size:1.05rem;font-weight:700;cursor:pointer;transition:all .2s;width:100%}.btn-action-primary:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 4px 14px #2563eb59;transform:translateY(-1px)}.btn-action-danger{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;background:var(--danger);color:#fff;border:none;border-radius:var(--radius-md);padding:.85rem 1.75rem;font-size:1.05rem;font-weight:700;cursor:pointer;transition:all .2s;width:100%}.btn-action-danger:hover{background:var(--danger-hover);box-shadow:0 4px 14px #ef444459}.file-sharing-wrap{display:flex;flex-direction:column;gap:1.5rem}.file-dropzone-modern{border:2px dashed #cbd5e1;border-radius:var(--radius-lg);padding:2.25rem 1.5rem;text-align:center;cursor:pointer;background:#f8fafc;transition:all .25s;display:flex;flex-direction:column;align-items:center;gap:.6rem}.file-dropzone-modern:hover{border-color:var(--accent);background:var(--accent-light)}.file-dropzone-modern.uploading{border-color:var(--accent);background:var(--accent-light);cursor:wait}.dropzone-icon{font-size:2.5rem;color:var(--accent);margin-bottom:.25rem}.dropzone-title{font-size:1.05rem;font-weight:700;color:var(--text-primary)}.dropzone-hint{font-size:.8rem;color:var(--text-secondary)}.active-presentation-card{background:var(--accent-light);border:1.5px solid var(--accent-border);border-radius:var(--radius-lg);padding:1.25rem 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var(--border);color:var(--text-primary);padding:.5rem 1rem;border-radius:var(--radius-sm);font-weight:700;font-size:.9rem;cursor:pointer;transition:all .2s}.btn-nav-control:hover:not(:disabled){background:var(--accent);color:#fff;border-color:var(--accent)}.btn-nav-control:disabled{opacity:.4;cursor:not-allowed}.nav-page-display{font-family:ui-monospace,SFMono-Regular,monospace;font-weight:700;font-size:1rem;color:var(--text-primary)}.files-section-title{font-size:.9rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.75rem}.files-list-modern{list-style:none;display:flex;flex-direction:column;gap:.6rem}.file-item-modern{display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border:1px solid var(--border);border-radius:var(--radius-md);padding:.75rem 1rem;transition:all .2s}.file-item-modern:hover{background:#f1f5f9;border-color:var(--border-hover)}.file-meta-col{display:flex;align-items:center;gap:.75rem;overflow:hidden;flex:1}.file-badge-type{background:#e2e8f0;color:var(--text-secondary);font-size:.7rem;font-weight:800;padding:.25rem .5rem;border-radius:4px}.file-name-text{font-size:.9rem;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-show-monitor{background:#fff;border:1px solid var(--border);color:var(--accent);padding:.4rem .9rem;border-radius:var(--radius-sm);font-size:.85rem;font-weight:700;cursor:pointer;transition:all .2s}.btn-show-monitor:hover:not(:disabled){background:var(--accent);color:#fff;border-color:var(--accent)}.btn-show-monitor.active{background:var(--success);color:#fff;border-color:var(--success)}.btn-show-monitor:disabled{opacity:.5;cursor:not-allowed}.alert-card{display:flex;align-items:center;gap:.75rem;padding:.85rem 1.25rem;border-radius:var(--radius-md);font-size:.9rem;margin-bottom:1.25rem}.alert-card.info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}.alert-card.warning{background:#fffbeb;border:1px solid #fde68a;color:#92400e}.alert-card.danger{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}.monitor-view{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;background-color:#f8fafc;color:#0f172a;display:flex;flex-direction:column;justify-content:space-between;-webkit-user-select:none;user-select:none;overflow:hidden;z-index:10}.monitor-view.cursor-hidden{cursor:none}.monitor-view.cursor-hidden *{cursor:none!important}.monitor-top-bar{display:flex;justify-content:space-between;align-items:center;padding:1.75rem 2.5rem;width:100%;position:absolute;top:0;left:0;right:0;z-index:20;pointer-events:none}.room-badge-light{background:#ffffffe6;border:1px solid #cbd5e1;color:#334155;font-size:1.25rem;font-weight:700;padding:.6rem 1.5rem;border-radius:9999px;box-shadow:0 4px 15px #0000000f;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.reconnect-badge-light{background:#fffbeb;border:1px solid #fde68a;color:#b45309;font-size:1.1rem;font-weight:700;padding:.6rem 1.5rem;border-radius:9999px;box-shadow:0 4px 15px #f59e0b26;animation:pulse-warn 1.5s infinite}.monitor-main{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;width:100%;height:100%;position:relative}.waiting-card-container{display:flex;flex-direction:column;align-items:center;background:#fff;border:1px solid #e2e8f0;border-radius:var(--radius-xl);padding:3.5rem 4.5rem;box-shadow:0 20px 40px -15px #0f172a14;max-width:900px;width:min(92vw,900px)}.waiting-subheading{font-size:clamp(1.1rem,2.2vw,1.8rem);font-weight:600;color:#64748b;margin-bottom:1.5rem;letter-spacing:-.01em}.pairing-code-light{font-size:clamp(4rem,13vw,8.5rem);font-weight:900;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;color:#1e3a8a;letter-spacing:.2em;text-indent:.2em;margin-bottom:2rem;line-height:1;text-shadow:0 2px 10px rgba(30,58,138,.1)}.countdown-bar-wrap{display:flex;flex-direction:column;align-items:center;width:min(75vw,550px);gap:.75rem}.progress-track-light{width:100%;height:10px;background-color:#e2e8f0;border-radius:9999px;overflow:hidden}.progress-bar-light{height:100%;background:linear-gradient(90deg,#2563eb,#38bdf8);border-radius:9999px;transition:width 1s linear}.countdown-timer-text{font-size:1rem;color:#64748b;font-weight:700;font-family:monospace}.video-stream-container,.file-content-container{width:100%;height:100%;position:absolute;top:0;right:0;bottom:0;left:0;background-color:#000;display:flex;justify-content:center;align-items:center;overflow:hidden}.monitor-video-feed{width:100%;height:100%;object-fit:contain;background-color:#000}.monitor-image-content{max-width:100%;max-height:100%;object-fit:contain}.monitor-pdf-wrapper{position:relative;width:100%;height:100%;display:flex;justify-content:center;align-items:center;background-color:#0f172a}.monitor-pdf-canvas{background-color:#fff;max-width:96vw;max-height:94vh;object-fit:contain;border-radius:4px;box-shadow:0 12px 40px #0009}.monitor-pdf-page-indicator{position:absolute;bottom:2rem;left:2.5rem;background:#ffffffe6;color:#0f172a;border:1px solid rgba(0,0,0,.15);border-radius:9999px;padding:.45rem 1.25rem;font-size:.95rem;font-weight:700;font-family:monospace;z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 12px #00000026}.unmute-btn-light{position:absolute;top:1.5rem;right:1.5rem;background:#fffffff2;color:#0f172a;border:1px solid rgba(0,0,0,.15);border-radius:var(--radius-sm);padding:.6rem 1.2rem;font-size:.95rem;font-weight:700;cursor:pointer;z-index:30;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 15px #00000026}.connected-state-card{display:flex;flex-direction:column;align-items:center;gap:1.5rem;background:#fff;border:1px solid #e2e8f0;border-radius:var(--radius-xl);padding:3.5rem 4rem;box-shadow:0 15px 35px -10px #0f172a14}.pulse-circle{width:24px;height:24px;background-color:var(--success);border-radius:50%;animation:pulse-green 2s infinite ease-in-out}.connected-state-title{font-size:clamp(1.4rem,3.5vw,2.25rem);font-weight:700;color:var(--text-primary);letter-spacing:-.02em}.monitor-floating-controls{display:flex;justify-content:flex-end;gap:1rem;padding:1.75rem 2.5rem;position:absolute;bottom:0;right:0;z-index:25;transition:opacity .3s ease-in-out}.monitor-floating-controls.visible{opacity:1;pointer-events:auto}.monitor-floating-controls.hidden{opacity:0;pointer-events:none}.floating-btn-light{background:#ffffffeb;border:1px solid rgba(0,0,0,.12);color:#1e293b;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 15px #00000014}.floating-btn-light:hover{background:#fff;transform:translateY(-2px);box-shadow:0 6px 20px #0000001f}.floating-btn-disconnect{background:#ef4444f2;border-color:#dc26264d;color:#fff}.floating-btn-disconnect:hover{background:#dc2626;box-shadow:0 6px 20px #ef444459}@keyframes pulse-warn{0%,to{opacity:1}50%{opacity:.55}}@keyframes pulse-green{0%{transform:scale(.95);box-shadow:0 0 #10b981b3}70%{transform:scale(1.1);box-shadow:0 0 0 16px #10b98100}to{transform:scale(.95);box-shadow:0 0 #10b98100}}