.channel-banner{background-color:var(--bg-offset);border:1px solid var(--border-color-soft);border-radius:var(--border-radius-large);padding:calc(var(--spacing-unit) * 4);display:flex;align-items:flex-start;gap:calc(var(--spacing-unit) * 4);margin-bottom:calc(var(--spacing-unit) * 5);box-shadow:0 4px 6px var(--shadow-color-soft);position:relative}.channel-banner-inner{display:flex;flex-direction:row;align-items:flex-start;gap:16px}.channel-banner-inner.guest-view,.channel-identity{align-items:center}.channel-identity{display:flex;flex-direction:column;gap:calc(var(--spacing-unit) * 2);min-width:140px;flex-shrink:0}.channel-icon{object-fit:cover;background-color:var(--bg-subtle-accent)}.channel-icon,.channel-icon-placeholder{width:120px;height:120px;border-radius:50%;border:4px solid #fff;box-shadow:0 4px 12px var(--shadow-color-medium);flex-shrink:0}.channel-icon-placeholder{background-color:var(--accent-color);color:white;display:flex;align-items:center;justify-content:center;font-size:3rem;font-weight:700}.channel-icon-placeholder.skeleton{background-color:#e0e0e0;color:transparent!important;border:none!important}.channel-skeleton-bar{background-color:#e0e0e0;border-radius:4px}.channel-skeleton-logo-text{height:36px;width:100%;margin-top:12px}.channel-info-skeleton-container{gap:10px;flex:1;min-width:0;display:flex;flex-direction:column}.channel-skeleton-title{height:32px;width:200px}.channel-skeleton-desc{height:20px;width:300px}.channel-info{flex-grow:1;display:flex;flex-direction:column}.channel-info-content{flex:1;min-width:0;position:relative}.channel-title{font-family:var(--font-family-headings);font-size:var(--font-size-xxl);color:var(--primary-text-color);margin-bottom:var(--spacing-unit);line-height:1.2}.channel-description{color:var(--secondary-text-color);font-size:var(--font-size-base);line-height:1.6;margin-bottom:calc(var(--spacing-unit) * 2)}.channel-description-scroll{white-space:pre-wrap;max-height:120px;overflow-y:auto;padding-right:8px}.channel-actions{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;min-height:32px}.channel-actions:empty{display:none}.channel-owner-controls{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;min-height:32px}.channel-owner-text{color:var(--accent-color);font-weight:700;font-size:.8rem;text-align:center;line-height:32px;white-space:nowrap}.channel-subscribe-spacer{width:100%;min-width:100px;height:32px}.subscribed-button-container{position:relative;display:inline-block;width:100%}.subscribe-btn{width:100%;padding:6px 12px;background-color:var(--accent-color);color:var(--accent-text-color);border:none;border-radius:var(--border-radius-soft);font-size:var(--font-size-small);font-weight:var(--font-weight-semibold);cursor:pointer;transition:background-color .2s ease,transform .1s ease;box-shadow:0 2px 4px var(--shadow-color-soft);display:flex;justify-content:center}.subscribe-btn:hover{background-color:var(--accent-color-darker);transform:translateY(-1px)}.subscribe-btn.subscribed{background-color:var(--success-color);display:flex;align-items:center;gap:4px;padding-right:12px}.subscribe-btn.subscribed:hover{background-color:hsl(122,39%,35%)}.subscribe-arrow{font-size:.7em;opacity:.8}.unsubscribe-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:160px;background-color:white;border:1px solid var(--border-color-soft);border-radius:var(--border-radius-soft);box-shadow:0 4px 12px var(--shadow-color-medium);padding:var(--spacing-unit);z-index:1000;animation:fadeIn .2s ease-out}.unsubscribe-item{padding:10px;cursor:pointer;font-size:var(--font-size-small);color:#d32f2f;font-weight:var(--font-weight-semibold);border-radius:var(--border-radius-soft);transition:background-color .2s;text-align:center}.unsubscribe-item:hover{background-color:#ffebee}.edit-dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;background-color:var(--bg-offset,#ffffff);border:1px solid var(--border-color-soft,#e2e8f0);border-radius:var(--border-radius-medium,12px);box-shadow:0 10px 25px -5px rgba(0,0,0,.12),0 8px 10px -6px rgba(0,0,0,.08);padding:6px;min-width:260px;z-index:2000;animation:fadeIn .18s ease-out;box-sizing:border-box}.edit-dropdown-header{padding:8px 12px 6px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--secondary-text-color,#64748b);border-bottom:1px solid var(--border-color-soft,#f1f5f9);margin-bottom:4px}.edit-dropdown-item{width:100%;justify-content:space-between;padding:9px 12px;background:transparent;border:none;border-radius:8px;cursor:pointer;font-size:.9rem;font-family:inherit;font-weight:500;color:var(--primary-text-color,#1e293b);transition:all .15s ease;text-align:left;box-sizing:border-box;user-select:none;outline:none;text-decoration:none}.edit-dropdown-item,.edit-item-left{display:flex;align-items:center;gap:10px}.edit-item-icon{font-size:1rem;display:inline-flex;align-items:center;justify-content:center;width:20px;flex-shrink:0}.edit-credit-badge{font-size:.72rem;font-weight:600;color:var(--accent-color,#0284c7);background-color:var(--bg-subtle-accent,#f0f9ff);padding:2px 7px;border-radius:12px;border:1px solid rgba(2,132,199,.15);white-space:nowrap}.edit-dropdown-divider{height:1px;background-color:var(--border-color-soft,#e2e8f0);margin:5px 0}.edit-dropdown-item:hover{background-color:var(--bg-subtle-accent,#f8fafc);color:var(--accent-color,#0284c7)}.edit-dropdown-item-danger{color:#dc2626!important}.edit-dropdown-item-danger:hover{background-color:#fef2f2!important;color:#b91c1c!important}.edit-dropdown-item.disabled{opacity:.45;cursor:not-allowed}.edit-dropdown-item.disabled:hover{background-color:transparent;color:var(--primary-text-color)}.edit-description-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;min-width:38px;min-height:38px;padding:0;background-color:var(--bg-offset,#ffffff);border:1px solid var(--border-color-soft,#e2e8f0);border-radius:50%;cursor:pointer;color:var(--accent-color,#0284c7);box-shadow:0 1px 3px var(--shadow-color-soft,rgba(0,0,0,.06));transition:all .2s ease;opacity:1;outline:none;box-sizing:border-box;position:relative;user-select:none}.edit-description-btn svg{width:18px;height:18px;display:block;transition:transform .2s ease}.edit-description-btn:hover{background-color:var(--bg-subtle-accent,#f0f9ff);border-color:var(--accent-color-lighter,#38bdf8);color:var(--accent-color,#0284c7);transform:translateY(-1px);box-shadow:0 4px 8px var(--shadow-color-medium,rgba(0,0,0,.1))}.edit-description-btn:hover svg{transform:scale(1.08)}.edit-description-btn.active,.edit-description-btn:active{background-color:var(--accent-color,#0284c7);color:#ffffff;border-color:var(--accent-color,#0284c7);box-shadow:0 2px 4px rgba(0,0,0,.15);transform:translateY(0)}.edit-description-btn.active svg,.edit-description-btn:active svg{color:#ffffff}.edit-description-btn:focus-visible{box-shadow:0 0 0 2px var(--bg-offset,#ffffff),0 0 0 4px var(--accent-color,#0284c7)}@media (max-width:768px){.channel-banner{flex-direction:column;text-align:center;align-items:center;padding:calc(var(--spacing-unit) * 3);padding-top:calc(var(--spacing-unit) * 6)}.channel-actions{justify-content:center}.channel-icon,.channel-icon-placeholder{width:100px;height:100px;font-size:2.5rem}}.course-generator-section{margin-top:0;border-top:none;padding-top:0;margin-bottom:calc(var(--spacing-unit) * 6);display:flex;flex-direction:column;align-items:center;width:100%;animation:fadeIn 1s ease-out}.generator-controls-container{display:flex;gap:15px;width:100%;justify-content:center;max-width:600px}.generator-toggle-btn{background-color:var(--bg-offset);border:1px solid var(--border-color-medium);border-radius:var(--border-radius-large);cursor:pointer;color:var(--primary-text-color);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);padding:calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 4);transition:all .2s ease;display:flex;align-items:center;gap:12px;box-shadow:0 2px 4px var(--shadow-color-soft)}.generator-toggle-btn-inner{flex:1;justify-content:center}.generator-toggle-btn-delete{border-color:#dc3545;color:#dc3545}.generator-toggle-btn:hover{color:var(--accent-color);border-color:var(--accent-color);background-color:#fff;transform:translateY(-1px);box-shadow:0 4px 8px var(--shadow-color-medium)}.generator-container{width:100%;max-width:600px;margin-top:calc(var(--spacing-unit) * 3);background-color:var(--bg-offset);border:1px solid var(--border-color-soft);border-radius:var(--border-radius-medium);padding:calc(var(--spacing-unit) * 4);box-shadow:0 4px 12px var(--shadow-color-soft);animation:slideUp .4s ease-out}.generator-container h3{font-family:var(--font-family-headings);font-size:var(--font-size-xl);color:var(--primary-text-color);margin-bottom:calc(var(--spacing-unit) * 3);text-align:center}.generator-form{display:flex;flex-direction:column;gap:calc(var(--spacing-unit) * 2.5)}.generator-form-group{display:flex;flex-direction:column;gap:calc(var(--spacing-unit) * 1)}.generator-form-group label{font-size:var(--font-size-small);font-weight:var(--font-weight-semibold);color:var(--primary-text-color)}.generator-input,.generator-textarea{padding:calc(var(--spacing-unit) * 1.5);border:1px solid var(--border-color-medium);border-radius:var(--border-radius-soft);font-family:var(--font-family-main);font-size:var(--font-size-base);background-color:#fff;transition:border-color .2s ease,box-shadow .2s ease;width:100%}.generator-input:focus,.generator-textarea:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px var(--shadow-color-soft)}.generator-textarea{min-height:100px;resize:vertical}.generator-row{display:flex;gap:calc(var(--spacing-unit) * 2)}.generator-row>div{flex:1}.generator-checkbox-group{display:flex;gap:calc(var(--spacing-unit) * 3);margin-top:var(--spacing-unit);justify-content:center;flex-wrap:wrap}.generator-checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:var(--font-size-small);user-select:none;color:var(--primary-text-color)}.generator-checkbox-label input[type=checkbox]{accent-color:var(--accent-color);width:16px;height:16px}.generator-submit-btn{margin-top:var(--spacing-unit);background-color:var(--accent-color);color:var(--accent-text-color);border:none;padding:calc(var(--spacing-unit) * 1.5);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);border-radius:var(--border-radius-soft);cursor:pointer;transition:background-color .2s ease,transform .1s ease;width:100%}.generator-submit-btn:hover{background-color:var(--accent-color-darker);transform:translateY(-1px);box-shadow:0 4px 8px var(--shadow-color-soft)}.generator-submit-btn:active{transform:translateY(0)}.generator-status{text-align:center;font-size:var(--font-size-small);color:var(--secondary-text-color);margin-top:var(--spacing-unit);min-height:20px;font-style:italic}.preset-buttons-container{display:flex;gap:var(--spacing-unit);flex-wrap:wrap}.preset-btn{background-color:var(--bg-offset);border:1px solid var(--border-color-medium);border-radius:var(--border-radius-soft);padding:var(--spacing-unit) calc(var(--spacing-unit) * 1.5);font-size:var(--font-size-small);cursor:pointer;transition:all .2s ease;color:var(--primary-text-color);flex:1;white-space:nowrap}.preset-btn:hover:not(.disabled){background-color:var(--bg-subtle-accent);border-color:var(--accent-color)}.preset-btn.disabled{opacity:.5;cursor:not-allowed;background-color:var(--bg-main)}.cost-estimate{text-align:center;font-weight:var(--font-weight-bold);color:var(--accent-color-darker);margin-top:var(--spacing-unit);font-size:var(--font-size-large)}.description-editor-container{margin-top:10px}.description-editor-textarea{width:100%;padding:8px;border-radius:6px;border:1px solid var(--border-color-medium);font-family:inherit;resize:vertical}.description-editor-actions{display:flex;gap:10px;margin-top:8px}.btn-save{background-color:var(--accent-color);color:white;border:none;border-radius:4px}.btn-cancel,.btn-save{padding:6px 14px;cursor:pointer;font-size:.9rem}.btn-cancel{background-color:transparent;color:var(--primary-text-color);border:1px solid var(--border-color-medium);border-radius:4px}.btn-edit-icon{background:none;border:none;margin-left:8px;cursor:pointer;font-size:.9rem;opacity:.7}.subscribe-modal-box{text-align:center;max-width:450px}.subscribe-modal-header{text-align:center;margin-bottom:8px}.subscribe-modal-msg{margin:0 auto 20px;max-width:320px;text-align:center}.subscribe-consent-container{display:flex;justify-content:center;margin-bottom:24px}.subscribe-consent-label{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--secondary-text-color);cursor:pointer;text-align:left;max-width:350px;background:var(--bg-subtle-accent);padding:12px 16px;borderRadius:8px;border:1px solid var(--border-color-soft)}.subscribe-consent-checkbox{accent-color:var(--accent-color);width:18px;height:18px;flex-shrink:0}.subscribe-consent-text{line-height:1.4}.subscribe-modal-actions{justify-content:center;gap:12px;margin-top:0}.btn-min-100{min-width:100px}.btn-min-140{min-width:140px}.image-picker-modal{max-width:420px;width:90vw}.image-picker-subtitle{text-align:center;color:var(--secondary-text-color);font-size:var(--font-size-small);margin:0 0 24px;line-height:1.5}.image-picker-options{display:flex;gap:16px}.image-picker-option{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:28px 16px;background-color:var(--bg-offset);border:1px solid var(--border-color-soft);border-radius:var(--border-radius-large);cursor:pointer;transition:all .2s ease;text-align:center}.image-picker-option:hover{border-color:var(--accent-color);background-color:var(--bg-subtle-accent);transform:translateY(-2px);box-shadow:0 4px 12px var(--shadow-color-medium)}.image-picker-icon{font-size:2rem;color:var(--accent-color);line-height:1;font-style:normal}.image-picker-label{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--primary-text-color)}.image-picker-sublabel{font-size:var(--font-size-small);color:var(--secondary-text-color);line-height:1.3}@media (max-width:480px){.image-picker-options{flex-direction:column}}.toggle-switch-container{display:inline-flex;align-items:center;gap:10px;cursor:pointer;user-select:none;font-size:var(--font-size-small);color:var(--secondary-text-color);padding:4px 0;transition:opacity .2s}.toggle-switch-container:hover{opacity:.9}.toggle-switch-input{display:none}.toggle-switch-slider{position:relative;width:42px;height:24px;background-color:var(--border-color-medium);border-radius:24px;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:inset 0 1px 3px rgba(0,0,0,.1)}.toggle-switch-slider:after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;background-color:white;border-radius:50%;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 2px rgba(0,0,0,.25)}.toggle-switch-input:checked+.toggle-switch-slider{background-color:var(--accent-color)}.toggle-switch-input:checked+.toggle-switch-slider:after{transform:translateX(18px)}.toggle-switch-label{min-width:45px;text-align:right;font-weight:var(--font-weight-semibold);transition:color .3s}.channel-header-controls{position:absolute;top:calc(var(--spacing-unit) * 2);right:calc(var(--spacing-unit) * 2);display:flex;flex-direction:row;align-items:center;gap:8px;z-index:100}.attached-files-container{margin-top:10px;background-color:var(--bg-offset);border:1px solid var(--border-color-soft);border-radius:var(--border-radius-soft);padding:10px;animation:fadeIn .3s ease}.attached-files-summary{display:flex;justify-content:space-between;align-items:center;font-size:var(--font-size-small);color:var(--primary-text-color);margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--border-color-soft)}.char-count-badge{background-color:var(--bg-subtle-accent);color:var(--secondary-text-color);padding:2px 6px;border-radius:4px;font-size:.8em}.attached-files-list{display:flex;flex-direction:column;gap:6px;max-height:150px;overflow-y:auto}.attached-file-item{display:flex;align-items:center;gap:8px;font-size:var(--font-size-small);background-color:#fff;padding:6px 10px;border-radius:4px;border:1px solid var(--border-color-soft)}.file-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--primary-text-color)}.file-icon{opacity:.7}.remove-file-btn{background:none;border:none;color:#dc3545;font-weight:700;cursor:pointer;padding:0 4px;font-size:1.2em;line-height:1;opacity:.7;transition:opacity .2s}.remove-file-btn:hover{color:#a71d2a;opacity:1}.toggle-switch-input:checked~.toggle-switch-label{color:var(--accent-color)}