:root{--color-primary: #1a73e8;--color-primary-hover: #1557b0;--color-primary-soft: rgba(26, 115, 232, .1);--color-primary-glow: rgba(26, 115, 232, .2);--color-bg: #f1f3f4;--color-surface: #ffffff;--color-text: #202124;--color-text-secondary: #5f6368;--color-border: #e8eaed;--color-border-input: #dadce0;--color-danger: #d93025;--color-success: #137333;--color-warning: #b06000;--sidebar-width: 240px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 24px;--shadow-card: 0 1px 2px rgba(60, 64, 67, .12), 0 1px 3px rgba(60, 64, 67, .08);--shadow-card-hover: 0 2px 8px rgba(26, 115, 232, .15);--shadow-sidebar: 2px 0 12px rgba(60, 64, 67, .06);--font-family: "Inter", system-ui, -apple-system, sans-serif;--transition-fast: .15s ease}*,*:before,*:after{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:var(--font-family);font-size:.9375rem;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}button,input,select,textarea{font-family:inherit}.app-shell{display:flex;min-height:100vh}.app-main{flex:1;margin-left:var(--sidebar-width);min-width:0;display:flex;flex-direction:column;min-height:100vh}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.app-header-title{margin:0;font-size:1.125rem;font-weight:600;color:var(--color-text)}.app-header-end{flex-shrink:0}.app-content{flex:1;padding:20px 24px 32px}.app-content--flush{padding:0}.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-width);display:flex;flex-direction:column;background:var(--color-surface);border-right:1px solid var(--color-border);box-shadow:var(--shadow-sidebar);z-index:20}.sidebar-header{padding:20px 16px 16px;background:linear-gradient(135deg,#1a73e814,#1a73e805,#fff);border-bottom:1px solid var(--color-border)}.sidebar-app-name{margin:0;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,var(--color-primary) 0%,#4285f4 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{flex:1;overflow-y:auto;padding:12px 8px;list-style:none;margin:0}.sidebar-nav-item{display:flex;align-items:center;gap:10px;padding:10px 14px;margin:2px 4px;border-radius:var(--radius-pill);color:#3c4043;font-weight:500;text-decoration:none;transition:background var(--transition-fast),color var(--transition-fast)}.sidebar-nav-item:hover,.sidebar-nav-item--active{background:var(--color-primary-soft);color:var(--color-primary)}.sidebar-nav-icon{width:20px;height:20px;flex-shrink:0;opacity:.85}.sidebar-nav-item--active .sidebar-nav-icon,.sidebar-nav-item:hover .sidebar-nav-icon{opacity:1}.sidebar-footer{padding:12px 12px 16px;border-top:1px solid var(--color-border);background:linear-gradient(180deg,transparent 0%,rgba(241,243,244,.5) 100%)}.sidebar-user-email{margin:0 0 8px;padding:0 6px;font-size:.8125rem;color:var(--color-text-secondary);word-break:break-all;line-height:1.4}.sidebar-logout{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border:none;border-radius:var(--radius-pill);background:transparent;color:#3c4043;font-weight:500;font-size:.9375rem;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast)}.sidebar-logout:hover{background:#d9302514;color:var(--color-danger)}.energy-badge{display:inline-flex;align-items:center;gap:4px;font-size:.8125rem;font-weight:600;font-variant-numeric:tabular-nums;color:var(--color-primary);padding:4px 10px;border-radius:16px;background:var(--color-primary-soft);line-height:1.2;white-space:nowrap}.energy-badge__icon{width:16px;height:16px;flex-shrink:0}.energy-badge__value{min-width:1.25rem;text-align:center}.energy-badge--unlimited{color:var(--color-success);background:#1373331f}.energy-badge--low{color:var(--color-warning);background:#ff980024}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:20px}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius-pill);background:var(--color-primary);color:#fff;font-size:.9375rem;font-weight:600;cursor:pointer;transition:background var(--transition-fast),box-shadow var(--transition-fast)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);box-shadow:0 2px 8px var(--color-primary-glow)}.btn-primary:disabled{opacity:.65;cursor:not-allowed}.btn-primary--block{width:100%}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border:1px solid var(--color-border-input);border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-text);font-size:.875rem;font-weight:500;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}.btn-secondary:hover:not(:disabled){background:#f8f9ff;border-color:var(--color-primary)}.btn-secondary:disabled{opacity:.65;cursor:not-allowed}.btn-compact{padding:6px 12px;font-size:.8125rem}.btn-link{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:10px;border:none;border-radius:var(--radius-md);background:transparent;color:var(--color-primary);font-weight:500;cursor:pointer;text-decoration:none}.btn-link:hover{background:var(--color-primary-soft)}.form-field{margin-bottom:16px}.form-field label{display:block;margin-bottom:6px;font-size:.875rem;font-weight:500;color:var(--color-text-secondary)}.form-field--compact{margin-bottom:12px}.form-field--checkbox{margin-top:8px}.form-checkbox{display:flex;align-items:flex-start;gap:8px;cursor:pointer;font-size:.9375rem}.form-checkbox input{margin-top:3px}.form-input,.url-input-bar,.settings-input-compact{width:100%;padding:10px 14px;border:1px solid var(--color-border-input);border-radius:var(--radius-md);font-size:.9375rem;background:var(--color-surface);color:var(--color-text);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.form-input:focus,.url-input-bar:focus,.settings-input-compact:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-glow)}.form-status{margin:0 0 12px;font-size:.875rem;color:var(--color-text-secondary)}.form-error,.download-error{margin:8px 0 0;font-size:.875rem;color:var(--color-danger)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(160deg,var(--color-bg) 0%,#e8f0fe 100%)}.auth-card{width:100%;max-width:400px;padding:32px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:0 4px 24px #3c40431f}.auth-title{margin:0 0 24px;font-size:1.5rem;font-weight:700;text-align:center;color:var(--color-text)}.auth-actions{display:flex;flex-direction:column;gap:8px;margin-top:20px}.library-toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px}.library-search-input{flex:1;min-width:0;padding:10px 14px;border:1px solid var(--color-border-input);border-radius:var(--radius-pill);font-size:.9375rem;background:var(--color-surface)}.library-search-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-glow)}.library-file-input{display:none}.library-section-title{margin:24px 0 12px;font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-secondary)}.library-empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:48px 24px;color:var(--color-text-secondary)}.library-empty-icon{width:64px;height:64px;margin-bottom:16px;opacity:.35}.library-empty-title{margin:0 0 8px;font-size:1.1rem;font-weight:500;color:var(--color-text)}.library-empty-hint{margin:0;font-size:.9rem;line-height:1.5}.library-no-results{text-align:center;padding:24px 0;color:var(--color-text-secondary)}.book-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.book-list-item-with-actions{display:flex;align-items:stretch;gap:8px}.book-card{flex:1;display:flex;align-items:center;gap:14px;min-height:88px;padding:14px 16px;border:none;border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-card);text-align:left;cursor:pointer;transition:box-shadow var(--transition-fast),background var(--transition-fast)}.book-card:hover,.book-card:focus-visible{background:#f8f9ff;box-shadow:var(--shadow-card-hover);outline:none}.book-card-cover{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:var(--color-primary-soft);color:var(--color-primary);flex-shrink:0}.book-card-body{flex:1;min-width:0}.book-card-title{margin:0 0 4px;font-size:.9375rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-card-author,.book-card-meta{margin:0;font-size:.8125rem;color:var(--color-text-secondary)}.book-card-chevron{width:18px;height:18px;flex-shrink:0;opacity:.4}.book-card-actions{display:flex;align-items:center;gap:6px}.book-card-delete{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;border-radius:50%;background:transparent;color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast)}.book-card-delete:hover{background:#d9302514;color:var(--color-danger)}.download-page-hero{padding:24px;background:linear-gradient(180deg,var(--color-surface) 0%,var(--color-bg) 100%);border-bottom:1px solid var(--color-border)}.download-center{max-width:560px;margin:0 auto}.download-history-section{padding:20px 24px 32px}.download-history-title{margin:0 0 16px;font-size:1rem;font-weight:600}.download-history-empty{color:var(--color-text-secondary);font-size:.875rem}.download-job-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.download-job-card{padding:16px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.download-job-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:8px}.download-job-title-row{display:flex;align-items:flex-start;gap:8px;min-width:0}.download-job-title{margin:0;font-size:.9375rem;font-weight:600;line-height:1.35}.download-job-delivery-icon{width:18px;height:18px;flex-shrink:0;margin-top:2px}.download-job-delivery-icon--email{color:var(--color-primary)}.download-job-delivery-icon--mobile{color:var(--color-text-secondary)}.download-job-badge{flex-shrink:0;padding:3px 10px;border-radius:var(--radius-pill);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.02em}.download-job-badge--pending{background:#fef7e0;color:#b06000}.download-job-badge--processing{background:var(--color-primary-soft);color:var(--color-primary)}.download-job-badge--completed{background:#1373331f;color:var(--color-success)}.download-job-badge--failed{background:#d930251a;color:var(--color-danger)}.download-job-meta{margin:4px 0 0;font-size:.8125rem;color:var(--color-text-secondary)}.download-job-meta--pending-transfer{color:var(--color-primary);font-weight:500}.download-job-error{margin:8px 0 0;font-size:.8125rem;color:var(--color-danger)}.download-job-progress{height:4px;margin:10px 0 6px;border-radius:2px;background:#e8eaed;overflow:hidden}.download-job-progress-bar{height:100%;background:var(--color-primary);border-radius:2px;transition:width .3s ease}.download-job-actions{display:flex;gap:8px;margin-top:12px}.btn-job-retry,.btn-job-delete{padding:6px 14px;border-radius:var(--radius-pill);font-size:.8125rem;font-weight:500;cursor:pointer;transition:background var(--transition-fast)}.btn-job-retry{border:1px solid var(--color-primary);background:transparent;color:var(--color-primary)}.btn-job-retry:hover:not(:disabled){background:var(--color-primary-soft)}.btn-job-retry:disabled{opacity:.5;cursor:not-allowed}.btn-job-delete{border:1px solid var(--color-border-input);background:transparent;color:var(--color-text-secondary)}.btn-job-delete:hover:not(:disabled){background:#d930250f;border-color:var(--color-danger);color:var(--color-danger)}.btn-job-delete:disabled{opacity:.5;cursor:not-allowed}.download-retry-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:flex;align-items:center;justify-content:center;background:#20212473;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.download-retry-panel{width:min(360px,calc(100% - 32px));padding:24px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:0 8px 32px #3c404333}.download-retry-title{margin:0 0 8px;font-weight:600}.download-retry-status{margin:0 0 12px;font-size:.875rem;color:var(--color-text-secondary)}.download-retry-progress{height:4px;border-radius:2px;background:#e8eaed;overflow:hidden}.download-retry-progress-bar{height:100%;background:var(--color-primary);transition:width .3s ease}.download-retry-progress-bar--indeterminate{width:40%!important;animation:indeterminate 1.2s ease-in-out infinite}@keyframes indeterminate{0%{transform:translate(-100%)}to{transform:translate(350%)}}.download-retry-hint{margin:12px 0 0;font-size:.8125rem;color:var(--color-text-secondary)}.download-form-page{max-width:560px}.form-actions-row{margin:12px 0}.settings-page{max-width:640px}.settings-section{margin-bottom:32px;padding:20px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.settings-section-title{margin:0 0 8px;font-size:1rem;font-weight:600}.settings-hint{margin:0 0 16px;font-size:.875rem;color:var(--color-text-secondary);line-height:1.5}.settings-field-label{margin:16px 0 8px;font-size:.8125rem;font-weight:500;color:var(--color-text-secondary)}.settings-status{margin:12px 0 0;font-size:.875rem;color:var(--color-text-secondary)}.settings-status--ok{color:var(--color-success)}.settings-empty{font-size:.875rem;color:var(--color-text-secondary)}.settings-actions{display:flex;gap:10px;margin-top:12px}.settings-actions--equal{display:grid;grid-template-columns:1fr 1fr}.btn-settings-primary,.btn-settings-outline{padding:10px 16px;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;cursor:pointer;transition:background var(--transition-fast)}.btn-settings-primary{border:none;background:var(--color-primary);color:#fff}.btn-settings-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-settings-primary--block,.btn-settings-outline--block{width:100%;margin-top:8px}.btn-settings-outline{border:1px solid var(--color-border-input);background:var(--color-surface);color:var(--color-text)}.btn-settings-outline:hover:not(:disabled){background:#f8f9ff}.btn-settings-link{display:block;margin-top:8px;padding:8px;border:none;background:none;color:var(--color-primary);font-size:.875rem;cursor:pointer}.reader-bg-grid{display:flex;flex-wrap:wrap;gap:10px}.reader-bg-swatch{width:40px;height:40px;border:2px solid transparent;border-radius:50%;cursor:pointer;transition:transform var(--transition-fast),border-color var(--transition-fast)}.reader-bg-swatch--active{border-color:var(--color-primary);transform:scale(1.08)}.reader-font-size-segment,.locale-segment{display:flex;flex-wrap:wrap;gap:8px}.reader-font-size-btn,.locale-segment-btn{padding:8px 14px;border:1px solid var(--color-border-input);border-radius:var(--radius-md);background:var(--color-surface);font-size:.875rem;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}.reader-font-size-btn--active,.locale-segment-btn--active{border-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-primary);font-weight:600}.replacement-list{list-style:none;margin:0 0 12px;padding:0}.replacement-row-compact{display:flex;align-items:center;gap:8px;margin-bottom:8px}.replacement-row-fields{flex:1;display:flex;align-items:center;gap:8px;min-width:0}.replacement-input{flex:1;min-width:0}.replacement-arrow{color:var(--color-text-secondary);flex-shrink:0}.btn-replacement-delete-compact{width:32px;height:32px;border:none;border-radius:50%;background:transparent;color:var(--color-text-secondary);font-size:1.25rem;cursor:pointer}.btn-replacement-delete-compact:hover{background:#d9302514;color:var(--color-danger)}.info-page{max-width:640px}.info-paragraph{margin:0 0 12px;line-height:1.6}.info-paragraph--muted{color:var(--color-text-secondary);font-size:.875rem}.info-list{margin:0;padding-left:20px;line-height:1.7}.info-links{display:flex;flex-direction:column;gap:10px}.info-link{color:var(--color-primary);text-decoration:none;font-weight:500}.info-link:hover{text-decoration:underline}.donate-card{text-align:center}.donate-qr-link{display:inline-block;margin:16px 0}.donate-qr{max-width:240px;width:100%;border-radius:var(--radius-md);box-shadow:var(--shadow-card)}.feature-coming-soon{text-align:center;padding:48px 24px;color:var(--color-text-secondary)}.audio-library-detail{max-width:640px}.audio-player-bar{width:100%;margin:16px 0}.audio-detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.reader-page{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;background:var(--reader-bg, var(--color-bg))}.reader-header{flex-shrink:0;transition:transform .25s ease,opacity .25s ease}.reader-header--hidden{transform:translateY(-100%);opacity:0;pointer-events:none}.reader-toolbar{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--reader-bg, var(--color-surface));border-bottom:1px solid var(--color-border)}.reader-back-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:50%;background:transparent;color:inherit;cursor:pointer;text-decoration:none}.reader-back-btn svg{width:20px;height:20px;flex-shrink:0}.reader-back-btn:hover{background:#0000000f}.reader-title{flex:1;margin:0;font-size:1rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reader-content{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.reader-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:48px 24px;min-height:200px;flex:1}.reader-loading-text{margin:0;font-size:.9375rem;color:var(--color-text-secondary)}.reader-load-progress{width:min(280px,80%);height:4px;border-radius:2px;background:#e8eaed;overflow:hidden}.reader-load-progress-bar{height:100%;background:var(--color-primary);transition:width .2s ease}.reader-layout{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.reader-shell{flex:1;min-height:0;position:relative;overflow:hidden}.reader-shell>div{height:100%!important;width:100%!important}.reader-shell>div>div{height:100%!important}.reader-shell>div>div>button{display:none!important}.reader-shell .epub-container{overflow-y:auto!important;height:100%!important}.reader-shell iframe{background-color:var(--reader-bg, var(--color-bg))!important}.reader-chapter-nav{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 16px;background:var(--reader-bg, var(--color-surface));border-top:1px solid var(--color-border)}.reader-chapter-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:none;border-radius:20px;background:transparent;color:var(--color-primary);font-size:.8125rem;font-weight:600;cursor:pointer;transition:background var(--transition-fast);flex:0 0 auto;min-width:0;max-height:44px}.reader-chapter-btn svg{width:18px;height:18px;flex-shrink:0}.reader-chapter-btn:hover{background:var(--color-primary-soft)}.resume-dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:flex;align-items:center;justify-content:center;background:#20212473}.resume-dialog{width:min(360px,calc(100% - 32px));padding:24px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:0 8px 32px #3c404333}.resume-dialog-title{margin:0 0 8px;font-size:1.125rem;font-weight:600}.resume-dialog-message{margin:0 0 20px;font-size:.9375rem;color:var(--color-text-secondary)}.resume-dialog-actions{display:flex;gap:10px;justify-content:flex-end}.spinner{width:28px;height:28px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:768px){:root{--sidebar-width: 0px}.sidebar{transform:translate(-100%);transition:transform .25s ease}.sidebar--open{transform:translate(0);width:240px}.app-main{margin-left:0}.app-content{padding:16px}}