:root{--color-primary: #7c4dff;--color-primary-light: #9575ff;--color-primary-gradient: linear-gradient(135deg, #9575ff 0%, #7c4dff 100%);--color-accent-cyan: #00bcd4;--color-accent-orange: #ff9800;--color-accent-green: #4caf50;--color-accent-pink: #e91e63;--color-bg-primary: #1a1a2e;--color-bg-secondary: #16213e;--color-bg-tertiary: #1f2937;--color-bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);--color-card-base: rgba(255, 255, 255, .05);--color-card-elevated: rgba(255, 255, 255, .08);--color-card-hover: rgba(255, 255, 255, .12);--color-bg-input: rgba(255, 255, 255, .05);--color-bg-hover: rgba(255, 255, 255, .08);--color-text-primary: #e8eaf6;--color-text-secondary: #aaaaaa;--color-text-tertiary: #888888;--color-text-on-primary: #ffffff;--color-border-primary: rgba(255, 255, 255, .1);--color-border-secondary: rgba(255, 255, 255, .05);--color-border-focus: #7c4dff;--color-success: #4caf50;--color-danger: #f44336;--color-info: #00bcd4;--color-warning: #ff9800;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .2);--shadow-md: 0 4px 8px rgba(0, 0, 0, .25);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .3);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .4);--overlay-light: rgba(255, 255, 255, .05);--overlay-medium: rgba(255, 255, 255, .1);--overlay-dark: rgba(0, 0, 0, .6)}[data-theme=light]{--color-primary: #7c4dff;--color-primary-light: #9575ff;--color-bg-primary: #f5f7fa;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f0f2f5;--color-bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #e8eaf6 100%);--color-card-base: #ffffff;--color-card-elevated: #ffffff;--color-card-hover: #f5f5f5;--color-bg-input: #ffffff;--color-bg-hover: #f5f5f5;--color-text-primary: #1a1a2e;--color-text-secondary: #5f6368;--color-text-tertiary: #888888;--color-border-primary: #e0e0e0;--color-border-secondary: #f0f0f0;--color-border-focus: #7c4dff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .15);--overlay-light: rgba(0, 0, 0, .05);--overlay-medium: rgba(0, 0, 0, .1);--overlay-dark: rgba(0, 0, 0, .5)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Space Grotesk,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--color-bg-gradient);color:var(--color-text-primary);transition:background-color .3s ease,color .3s ease}#root{min-height:100vh}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit;color:var(--color-text-primary)}.landing-page{min-height:100vh;display:flex;flex-direction:column;background:var(--color-bg-gradient);color:var(--color-text-primary)}.header{text-align:center;padding:3rem 1rem 2rem}.header h1{background:var(--color-primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:3rem;margin:0;font-weight:700;letter-spacing:-.02em}.tagline{font-size:1.25rem;margin:.5rem 0 0;color:var(--color-text-secondary)}.main-content{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:2rem 1rem}.hero{text-align:center;margin-bottom:4rem}.hero h2{font-size:2.5rem;margin:0 0 1rem;font-weight:600;color:var(--color-text-primary)}.hero p{font-size:1.125rem;max-width:600px;margin:0 auto 2rem;line-height:1.6;color:var(--color-text-secondary)}.cta-button{background:var(--color-primary-gradient);color:var(--color-text-on-primary);border:none;padding:1rem 2.5rem;font-size:1.125rem;font-weight:600;border-radius:50px;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-lg)}.cta-button:hover{transform:translateY(-3px);box-shadow:0 8px 30px #7c4dff66}.cta-button:active{transform:translateY(0)}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:3rem}.feature-card{background:var(--color-card-elevated);border:1px solid var(--color-border-secondary);padding:2rem;border-radius:20px;text-align:center;transition:all .2s ease;box-shadow:var(--shadow-sm)}.feature-card:hover{transform:translateY(-5px);background:var(--color-card-hover);box-shadow:var(--shadow-lg);border-color:var(--color-primary)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-card h3{font-size:1.5rem;margin:0 0 .75rem;font-weight:600;color:var(--color-text-primary)}.feature-card p{margin:0;color:var(--color-text-secondary);line-height:1.5}.footer{text-align:center;padding:2rem 1rem;background:var(--color-card-base);border-top:1px solid var(--color-border-secondary);margin-top:auto}.footer p{margin:0;color:var(--color-text-secondary)}@media(max-width:768px){.header h1{font-size:2rem}.hero h2{font-size:1.75rem}.features{grid-template-columns:1fr}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg-gradient);padding:1rem}.auth-container{background:var(--color-card-elevated);border:1px solid var(--color-border-secondary);border-radius:20px;padding:3rem;max-width:450px;width:100%;box-shadow:var(--shadow-xl)}.auth-header{text-align:center;margin-bottom:2rem}.auth-header h1{background:var(--color-primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:2rem;margin:0 0 .5rem;font-weight:700;letter-spacing:-.02em}.auth-header p{color:var(--color-text-secondary);margin:0;font-size:1rem}.auth-form{display:flex;flex-direction:column;gap:1.5rem}.form-group input{padding:.75rem 1rem;border:2px solid var(--color-border-primary);border-radius:8px;font-size:1rem;transition:border-color .3s ease}.form-group input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #7c4dff1a}.auth-button{background:var(--color-primary-gradient);color:var(--color-text-on-primary);border:none;padding:1rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;margin-top:.5rem}.auth-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #7c4dff66}.auth-button:active{transform:translateY(0)}.auth-footer{text-align:center;margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--color-border-primary)}.auth-footer p{color:var(--color-text-secondary);margin:0;font-size:.875rem}.auth-link{color:var(--color-primary);text-decoration:none;font-weight:600}.auth-link:hover{text-decoration:underline}@media(max-width:480px){.auth-container{padding:2rem}.auth-header h1{font-size:1.5rem}}.theme-toggle{background:#fff3;border:none;border-radius:8px;padding:.5rem .75rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:.5rem;color:#fff;font-weight:500;font-size:.875rem}.theme-toggle:hover{background:#ffffff4d;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.theme-toggle:active{transform:translateY(0)}.theme-icon{font-size:1.25rem;line-height:1}@media(max-width:768px){.theme-toggle{padding:.5rem}}.main-layout{min-height:100vh;display:flex;flex-direction:column}.navbar{background:var(--color-card-base);color:var(--color-text-primary);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;gap:2rem;border-bottom:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.navbar-brand h1{margin:0;font-size:1.75rem;font-weight:700;letter-spacing:-.02em;background:var(--color-primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{list-style:none;display:flex;gap:2rem;margin:0;padding:0}.nav-links a{color:var(--color-text-primary);text-decoration:none;padding:.5rem 1rem;border-radius:8px;transition:all .2s ease;font-weight:500}.nav-links a:hover{background:var(--color-card-hover);transform:translateY(-1px)}.nav-links a.active{background:var(--color-primary-gradient);color:var(--color-text-on-primary);font-weight:600;box-shadow:0 2px 8px #7c4dff4d}.main-content{flex:1;padding:2rem;max-width:1400px;width:100%;margin:0 auto}@media(max-width:768px){.navbar{flex-direction:column;gap:1rem;padding:1rem}.nav-links{flex-direction:column;gap:.5rem;width:100%}.nav-links a{text-align:center}.main-content{padding:1rem}}.subject-list{display:grid;gap:1.5rem}.subject-card{background:var(--color-card-base);border:1px solid var(--color-border-secondary);border-radius:16px;padding:1.5rem;transition:all .2s ease;box-shadow:var(--shadow-sm)}.subject-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--color-primary)}.subject-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1rem;gap:1rem}.subject-header h3{margin:0;color:var(--color-text-primary);font-size:1.5rem;font-weight:600}.exam-date{color:var(--color-text-secondary);margin:.25rem 0 0;font-size:.875rem}.difficulty-badge{padding:.5rem 1rem;border-radius:20px;color:#fff;font-size:.75rem;font-weight:600;white-space:nowrap}.subject-body,.subject-info{margin-bottom:1rem}.subject-info strong{display:block;color:var(--color-text-primary);margin-bottom:.5rem;font-size:.875rem}.subject-info p{color:var(--color-text-secondary);margin:0;line-height:1.5}.subject-stats{display:flex;gap:1.5rem;padding:.75rem 0;border-top:1px solid var(--color-border-secondary);border-bottom:1px solid var(--color-border-secondary)}.stat{color:var(--color-text-secondary);font-size:.875rem}.subject-actions{display:flex;gap:.75rem;margin-top:1rem;flex-wrap:wrap}.empty-state{text-align:center;padding:3rem;color:var(--color-text-tertiary)}.empty-state-small{text-align:center;padding:2rem;color:var(--color-text-tertiary);font-size:.875rem}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.modal{background:var(--color-card-elevated);border-radius:20px;max-width:600px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-xl);border:1px solid var(--color-border-secondary)}.modal-large{max-width:800px}.modal-header{padding:1.5rem;border-bottom:1px solid var(--color-border-secondary);display:flex;justify-content:space-between;align-items:flex-start;position:sticky;top:0;background:var(--color-card-elevated);z-index:1;border-radius:20px 20px 0 0}.modal-header h2{margin:0;color:var(--color-text-primary);font-size:1.5rem}.modal-subtitle{color:var(--color-text-secondary);font-size:.875rem;margin:.25rem 0 0}.close-button:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.modal-body{padding:1.5rem}.modal-footer{padding:1.5rem;border-top:1px solid var(--color-border-secondary);display:flex;justify-content:flex-end;gap:.75rem;position:sticky;bottom:0;background:var(--color-card-elevated);border-radius:0 0 20px 20px}.subject-form,.inline-form form{display:flex;flex-direction:column;gap:1.25rem;padding:1.25em}.inline-form{background:var(--color-bg-tertiary);padding:1.5rem;border-radius:8px;margin-bottom:1.5rem}.inline-form h4{margin:0 0 1rem;color:var(--color-text-primary)}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{color:var(--color-text-primary);font-weight:500;font-size:.875rem}.form-group input,.form-group textarea{padding:.75rem;border:2px solid var(--color-border-primary);border-radius:8px;font-size:1rem;transition:border-color .3s ease}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #7c4dff1a}.difficulty-slider{width:100%;height:8px;border-radius:4px;outline:none;background:linear-gradient(to right,#4caf50,#8bc34a,#ffc107,#ff9800,#f44336);cursor:pointer}.difficulty-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--color-card-elevated);border:3px solid var(--color-primary);cursor:pointer;box-shadow:var(--shadow-md)}.difficulty-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--color-card-elevated);border:3px solid var(--color-primary);cursor:pointer;box-shadow:var(--shadow-md)}.difficulty-labels{display:flex;justify-content:space-between;font-size:.75rem;color:var(--color-text-secondary);margin-top:.5rem}.form-actions{display:flex;gap:.75rem;justify-content:flex-end;margin-top:.5rem}.block-list{display:flex;flex-direction:column;gap:.75rem}.block-item{display:flex;align-items:flex-start;gap:1rem;padding:1rem;background:var(--color-card-base);border:2px solid var(--color-border-secondary);border-radius:12px;transition:all .2s ease}.block-item:hover{border-color:var(--color-primary);transform:translate(4px);box-shadow:var(--shadow-sm)}.block-item.completed{opacity:.6;background:var(--color-bg-tertiary)}.block-item.completed .block-content h4,.block-item.completed .block-content p{text-decoration:line-through}.block-checkbox{padding-top:.125rem}.block-checkbox input[type=checkbox]{width:20px;height:20px;cursor:pointer}.block-content{flex:1;min-width:0}.block-content h4{margin:0 0 .25rem;color:var(--color-text-primary);font-size:1rem;font-weight:600}.block-content p{margin:0;color:var(--color-text-secondary);font-size:.875rem;line-height:1.4}.block-actions{display:flex;gap:.5rem}.block-manager-actions{margin-bottom:1.5rem}@media(max-width:768px){.subject-header,.subject-actions{flex-direction:column}.subject-actions .btn{width:100%}.modal{max-width:100%;max-height:100vh;border-radius:0}.difficulty-labels span:nth-child(2n){display:none}}.page{width:100%}.page-header{margin-bottom:2rem}.page-header-content{display:flex;justify-content:space-between;align-items:center;gap:2rem}.page-header h1{color:var(--color-text-primary);font-size:2rem;margin:0 0 .5rem;font-weight:700;letter-spacing:-.02em}.page-header p{color:var(--color-text-secondary);font-size:1.125rem;margin:0}@media(max-width:768px){.page-header-content{flex-direction:column;align-items:flex-start}}.page-content{background:var(--color-card-base);border-radius:16px;padding:2rem;box-shadow:var(--shadow-md);transition:transform .2s ease,box-shadow .2s ease;border:1px solid var(--color-border-secondary)}.placeholder-text{color:var(--color-text-secondary);font-size:1rem;line-height:1.6;margin:0}.planning-actions{display:flex;gap:.75rem;flex-wrap:wrap}.export-dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--color-card-elevated);border:1px solid var(--color-border-secondary);border-radius:12px;box-shadow:var(--shadow-lg);min-width:200px;z-index:100;overflow:hidden}.dropdown-menu button{width:100%;padding:.75rem 1rem;background:none;border:none;text-align:left;cursor:pointer;transition:background .2s ease;font-size:.875rem}.dropdown-menu button:hover{background:var(--color-card-hover)}.planning-generator{max-width:700px;margin:0 auto}.planning-generator.empty{padding:3rem 1rem}.generator-header{text-align:center;margin-bottom:2rem}.generator-header h2{margin:0 0 .5rem;color:var(--color-text-primary)}.generator-header p{margin:0;color:var(--color-text-secondary)}.generator-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:2rem}.stat-card{background:var(--color-primary-gradient);color:#fff;padding:1.5rem;border-radius:16px;text-align:center;box-shadow:var(--shadow-md);transition:all .2s ease}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.stat-value{display:block;font-size:2.5rem;font-weight:700;margin-bottom:.25rem}.stat-label{display:block;font-size:.875rem;opacity:.9}.generator-form{display:flex;flex-direction:column;gap:1.5rem}.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.form-group select{padding:.75rem;border:2px solid var(--color-border-primary);border-radius:8px;font-size:1rem;transition:all .2s ease;background:var(--color-bg-input)}.form-group select:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #7c4dff1a}.form-group small{font-size:.75rem;color:#999;margin-top:.25rem;display:block}.range-slider{width:100%;height:8px;border-radius:4px;outline:none;background:var(--color-primary-gradient);cursor:pointer}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--color-card-elevated);border:3px solid var(--color-primary);cursor:pointer;box-shadow:var(--shadow-md)}.range-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--color-card-elevated);border:3px solid var(--color-primary);cursor:pointer;box-shadow:var(--shadow-md)}.range-labels{display:flex;justify-content:space-between;font-size:.75rem;color:var(--color-text-secondary);margin-top:.5rem}.checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-size:.875rem}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.generator-actions{margin-top:1rem;display:flex;justify-content:center}.planning-calendar{width:100%}.calendar-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid var(--color-border-primary)}.calendar-header h2{margin:0;color:var(--color-text-primary)}.calendar-stats{color:var(--color-text-secondary);font-size:.875rem;margin:.5rem 0 0}.accepted-badge{display:inline-block;background:#4caf50;color:#fff;padding:.25rem .75rem;border-radius:12px;font-size:.75rem;margin-left:1rem;font-weight:600}.calendar-body{display:flex;flex-direction:column;gap:2rem}.calendar-day{background:var(--color-card-base);border:1px solid var(--color-border-secondary);border-radius:16px;overflow:hidden;transition:all .2s ease}.calendar-day:hover{box-shadow:var(--shadow-md)}.day-header{background:var(--color-primary-gradient);color:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center}.day-header h3{margin:0;font-size:1.125rem;font-weight:600}.day-stats{font-size:.875rem;opacity:.9}.day-blocks{padding:1rem;display:flex;flex-direction:column;gap:.75rem}.planning-block{display:flex;gap:1rem;padding:1rem;background:var(--color-card-elevated);border-left:4px solid var(--color-primary);border-radius:12px;transition:all .2s ease;cursor:pointer}.planning-block:hover{background:var(--color-card-hover);box-shadow:var(--shadow-sm);transform:translate(4px)}.block-time{font-weight:600;color:var(--color-text-primary);min-width:120px;font-size:.875rem}.block-details{flex:1;min-width:0}.block-subject{font-weight:700;font-size:1rem;margin-bottom:.25rem}.block-name{color:var(--color-text-secondary);font-size:.875rem}.repetition-badge{display:inline-block;background:var(--color-border-primary);color:var(--color-text-secondary);padding:.125rem .5rem;border-radius:10px;font-size:.75rem;margin-top:.25rem;font-weight:500}.planning-edit-form{padding:1.5rem}.planning-edit-form .form-group{margin-bottom:1.25rem}.read-only-field{padding:.75rem;background:var(--color-bg-input);border-radius:8px;border:2px solid var(--color-border-secondary);color:var(--color-text-secondary);font-weight:500}@media(max-width:768px){.planning-actions{width:100%;flex-direction:column}.planning-actions .btn,.export-dropdown,.export-dropdown .btn{width:100%}.dropdown-menu{position:static;margin-top:.5rem;box-shadow:0 2px 8px #0000001a}.form-row,.generator-stats{grid-template-columns:1fr}.day-header{flex-direction:column;align-items:flex-start;gap:.5rem}.planning-block{flex-direction:column;gap:.75rem}.block-time{min-width:auto}.range-labels span:nth-child(2){display:none}}.study-page-content{display:flex;flex-direction:column;gap:2rem}.study-active-container,.study-sections{display:grid;gap:2rem;grid-template-columns:1fr 1fr}.study-controls{background:var(--color-card-base);padding:2rem;border-radius:16px;border:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm);transition:all .2s ease}.study-controls.empty{padding:3rem 2rem;text-align:center}.study-controls h3{margin:0 0 1.5rem;color:var(--color-text-primary);font-size:1.25rem}.study-form{display:flex;flex-direction:column;gap:1.5rem}.approach-options{display:flex;flex-direction:column;gap:.75rem}.approach-option{display:flex;align-items:flex-start;gap:1rem;padding:1rem;border:2px solid var(--color-border-primary);border-radius:8px;cursor:pointer;transition:all .2s ease}.approach-option:hover{border-color:var(--color-primary);background:var(--color-card-hover);transform:translate(4px)}.approach-option.active{border-color:var(--color-primary);background:var(--color-card-elevated);box-shadow:var(--shadow-sm)}.approach-option input[type=radio]{margin-top:.25rem;cursor:pointer}.option-content{flex:1;display:flex;flex-direction:column;gap:.25rem}.option-content strong{color:var(--color-text-primary);font-size:1rem}.option-content span{color:var(--color-text-secondary);font-size:.875rem}.active-session{background:var(--color-primary-gradient);color:#fff;padding:2rem;border-radius:16px;display:flex;flex-direction:column;gap:1.5rem;box-shadow:var(--shadow-lg)}.active-session-header{display:flex;justify-content:space-between;align-items:center}.active-session-header h3{margin:0;font-size:1.25rem}.session-type{background:#fff3;padding:.5rem 1rem;border-radius:20px;font-size:.875rem}.active-session-info{display:flex;flex-direction:column;gap:.5rem;padding:1rem;background:#ffffff1a;border-radius:8px}.session-subject,.session-block{font-size:.875rem}.session-timer{text-align:center;padding:2rem 1rem}.timer-label{font-size:.875rem;opacity:.9;margin-bottom:.5rem}.timer-display-large{font-size:3rem;font-weight:700;font-variant-numeric:tabular-nums}.pomodoro-timer{background:var(--color-card-base);padding:2rem;border-radius:16px;border:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:1.5rem}.timer-header{display:flex;justify-content:space-between;align-items:center}.timer-header h3{margin:0;color:var(--color-text-primary);font-size:1.25rem}.pomodoro-count{background:var(--color-bg-hover);padding:.5rem 1rem;border-radius:20px;font-size:.875rem;color:var(--color-text-secondary);font-weight:600}.timer-display{background:var(--color-bg-primary);padding:2rem;border-radius:12px;text-align:center;transition:all .3s ease}.timer-display.work{background:var(--color-primary-gradient);color:#fff;box-shadow:var(--shadow-md)}.timer-display.break{background:linear-gradient(135deg,#4facfe,#00f2fe);color:#fff}.timer-display.running{animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.phase-label{font-size:1rem;font-weight:600;margin-bottom:1rem;opacity:.9}.timer-time{font-size:3.5rem;font-weight:700;margin-bottom:1rem;font-variant-numeric:tabular-nums}.timer-progress{height:8px;background:#ffffff4d;border-radius:4px;overflow:hidden}.progress-bar{height:100%;background:var(--color-bg-secondary);transition:width .3s ease;border-radius:4px}.timer-controls{display:flex;gap:.75rem;justify-content:center}.pomodoro-info{background:var(--color-bg-tertiary);padding:1rem;border-radius:8px;font-size:.875rem;color:var(--color-text-secondary);line-height:1.5}.pomodoro-info p{margin:0}.pomodoro-info strong{color:var(--color-text-primary)}.progress-tracker{background:var(--color-card-base);padding:2rem;border-radius:16px;border:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm)}.progress-tracker.empty{padding:3rem 2rem;text-align:center}.progress-tracker h3{margin:0 0 1.5rem;color:var(--color-text-primary);font-size:1.25rem}.subjects-progress{display:flex;flex-direction:column;gap:1.5rem}.subject-progress-card{padding:1.5rem;background:var(--color-bg-tertiary);border-radius:12px;border:1px solid var(--color-border-primary)}.subject-progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.subject-progress-header h4{margin:0;color:var(--color-text-primary);font-size:1rem}.progress-percentage{font-size:1.25rem;font-weight:700;color:var(--color-primary)}.progress-bar-container{height:10px;background:var(--color-border-primary);border-radius:5px;overflow:hidden;margin-bottom:.75rem}.progress-bar-fill{height:100%;background:var(--color-primary-gradient);transition:width .3s ease;border-radius:5px;box-shadow:0 2px 4px #7c4dff4d}.subject-progress-stats{display:flex;gap:1.5rem;font-size:.875rem;color:var(--color-text-secondary);margin-bottom:1rem}.blocks-checklist{display:flex;flex-direction:column;gap:.5rem}.block-check-item{display:flex;align-items:center}.block-check-item label{display:flex;align-items:center;gap:.75rem;width:100%;padding:.5rem;cursor:pointer;border-radius:6px;transition:background .2s ease}.block-check-item label:hover{background:var(--color-bg-secondary)}.block-check-item.completed label{opacity:.6}.block-check-item input[type=checkbox]{width:18px;height:18px;cursor:pointer}.block-check-name{flex:1;font-size:.875rem;color:var(--color-text-primary)}.block-check-item.completed .block-check-name{text-decoration:line-through}.block-check-time{font-size:.75rem;color:#999;font-weight:600}.study-history{background:var(--color-card-base);padding:2rem;border-radius:16px;border:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm)}.study-history.empty{padding:3rem 2rem;text-align:center}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--color-border-secondary)}.history-header h3{margin:0;color:var(--color-text-primary);font-size:1.25rem}.total-time{font-size:1.125rem;font-weight:700;color:var(--color-primary)}.history-timeline{display:flex;flex-direction:column;gap:1.5rem}.history-day{display:flex;flex-direction:column;gap:.75rem}.day-label{font-weight:600;color:var(--color-text-secondary);font-size:.875rem;text-transform:uppercase;letter-spacing:.5px}.day-sessions{display:flex;flex-direction:column;gap:.5rem}.history-session{display:flex;align-items:center;gap:1rem;padding:.75rem 1rem;background:var(--color-card-elevated);border-radius:12px;border-left:4px solid var(--color-primary);transition:all .2s ease}.history-session:hover{transform:translate(4px);box-shadow:var(--shadow-sm)}.session-time{font-size:.75rem;color:var(--color-text-secondary);min-width:100px;font-weight:600}.session-details{flex:1;min-width:0}.session-subject-name{font-weight:600;color:var(--color-text-primary);font-size:.875rem}.session-block-name{font-size:.75rem;color:var(--color-text-secondary)}.session-duration{font-weight:600;color:var(--color-primary);font-size:.875rem;min-width:50px;text-align:right}.session-approach{font-size:1.25rem}@media(max-width:1024px){.study-active-container,.study-sections{grid-template-columns:1fr}}@media(max-width:768px){.timer-display-large{font-size:2rem}.timer-time{font-size:2.5rem}.history-session{flex-direction:column;align-items:flex-start;gap:.5rem}.session-time,.session-duration{min-width:auto}}.settings-page-content{display:flex;flex-direction:column;gap:2rem}.settings-section{background:var(--color-card-base);padding:2rem;border-radius:16px;border:1px solid var(--color-border-secondary);box-shadow:var(--shadow-sm);transition:all .2s ease}.section-header{margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--color-border-secondary)}.section-header h3{margin:0 0 .5rem;color:var(--color-text-primary);font-size:1.25rem}.section-header p{margin:0;color:var(--color-text-secondary);font-size:.875rem}.section-note{margin-top:1.5rem;padding:1rem;background:var(--color-bg-tertiary);border-radius:8px;border-left:4px solid var(--color-primary);font-size:.875rem;color:var(--color-text-secondary);line-height:1.5}.section-note strong{color:var(--color-text-primary)}.language-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.language-option{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:var(--color-card-elevated);border:2px solid var(--color-border-secondary);border-radius:12px;cursor:pointer;transition:all .2s ease;position:relative}.language-option:hover{border-color:var(--color-primary);background:var(--color-card-hover);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.language-option.active{border-color:var(--color-primary);background:var(--color-card-hover);box-shadow:var(--shadow-md)}.language-flag{font-size:1.5rem}.language-name{flex:1;font-weight:500;color:var(--color-text-primary)}.selected-indicator{color:var(--color-primary);font-weight:700;font-size:1.25rem}.reminder-controls{display:flex;flex-direction:column;gap:1.5rem}.reminder-toggle{padding:1.5rem;background:var(--color-bg-tertiary);border-radius:12px}.toggle-label{display:flex;align-items:center;gap:1rem;cursor:pointer}.toggle-checkbox{display:none}.toggle-switch{position:relative;width:50px;height:28px;background:#ccc;border-radius:14px;transition:background .3s ease;flex-shrink:0}.toggle-switch:after{content:"";position:absolute;top:2px;left:2px;width:24px;height:24px;background:#fff;border-radius:50%;transition:transform .3s ease;box-shadow:0 2px 4px #0003}.toggle-checkbox:checked+.toggle-switch{background:var(--color-primary-gradient)}.toggle-checkbox:checked+.toggle-switch:after{transform:translate(22px)}.toggle-text{display:flex;flex-direction:column;gap:.25rem}.toggle-text strong{color:var(--color-text-primary);font-size:1rem}.toggle-text small{color:var(--color-text-secondary);font-size:.875rem}.reminder-timing{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem;background:var(--color-bg-tertiary);border-radius:12px}.reminder-timing label{color:var(--color-text-primary);font-weight:500;font-size:.875rem}.reminder-select{flex:1;padding:.75rem;border:2px solid var(--color-border-primary);border-radius:8px;font-size:.875rem;background:var(--color-bg-input);cursor:pointer;transition:all .2s ease}.reminder-select:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #7c4dff1a}.reminder-preview{margin-top:1.5rem;padding:1.5rem;background:var(--color-bg-tertiary);border-radius:12px}.preview-header{font-weight:600;color:var(--color-text-primary);margin-bottom:1rem;font-size:.875rem}.notification-mock{display:flex;gap:1rem;padding:1rem;background:var(--color-card-elevated);border-radius:12px;box-shadow:var(--shadow-md);border-left:4px solid var(--color-primary)}.notification-icon{font-size:2rem;flex-shrink:0}.notification-content{flex:1}.notification-title{font-weight:600;color:var(--color-text-primary);margin-bottom:.25rem}.notification-body{color:var(--color-text-secondary);font-size:.875rem;line-height:1.4}.theme-options{display:flex;flex-direction:column;gap:1rem}.theme-option{display:flex;align-items:center;gap:1rem;padding:1.25rem;background:var(--color-card-elevated);border:2px solid var(--color-border-secondary);border-radius:12px;cursor:pointer;transition:all .2s ease;position:relative}.theme-option:hover{border-color:var(--color-primary);background:var(--color-card-hover);transform:translate(4px);box-shadow:var(--shadow-sm)}.theme-option.active{border-color:var(--color-primary);background:var(--color-card-hover);box-shadow:var(--shadow-md)}.theme-radio{cursor:pointer}.theme-content{flex:1;display:flex;flex-direction:column;gap:.25rem}.theme-content strong{color:var(--color-text-primary);font-size:1rem}.theme-content span{color:var(--color-text-secondary);font-size:.875rem}.system-status{color:var(--color-primary);font-size:.75rem;font-weight:600;margin-top:.25rem}@media(max-width:768px){.language-grid{grid-template-columns:1fr}.reminder-timing{flex-direction:column;align-items:flex-start}.reminder-select{width:100%}.theme-option{padding:1rem}.theme-icon{font-size:1.5rem}}.btn{padding:.625rem 1.25rem;border:none;border-radius:8px;font-size:.875rem;font-weight:600;cursor:pointer;transition:all .2s ease;font-family:inherit;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--color-primary-gradient);color:var(--color-text-on-primary)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #7c4dff66}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--color-card-base);color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover:not(:disabled){background:var(--color-card-hover);transform:translateY(-1px);box-shadow:0 4px 12px #7c4dff33}.btn-danger{background:var(--color-danger);color:var(--color-text-on-primary)}.btn-danger:hover:not(:disabled){background:#d32f2f}.btn-icon{background:none;border:none;font-size:1.25rem;cursor:pointer;padding:.25rem .5rem;transition:transform .2s ease}.btn-icon:hover:not(:disabled){transform:scale(1.2)}.btn-icon.btn-danger{background:none;color:var(--color-danger)}.btn-icon.btn-danger:hover:not(:disabled){color:#d32f2f;transform:scale(1.2)}.btn-large{padding:1rem 3rem;font-size:1rem}.close-button{background:none;border:none;font-size:2rem;line-height:1;cursor:pointer;color:var(--color-text-tertiary);padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s ease}.close-button:hover:not(:disabled){background:var(--color-bg-hover);color:var(--color-text-primary)}.btn-icon-content{line-height:1;display:inline-flex;align-items:center}.btn-full-width{width:100%}.btn-cta{border-radius:50px;padding:1rem 2.5rem;font-size:1.125rem;box-shadow:var(--shadow-lg)}.btn-cta:hover:not(:disabled){box-shadow:0 8px 30px #7c4dff66;transform:translateY(-3px)}