:root{--color-primary: #8B4513;--color-primary-light: #A0522D;--color-primary-dark: #654321;--color-accent: #D2691E;--color-accent-light: #E89A5B;--color-bg: #FFF8DC;--color-bg-secondary: #FAEBD7;--color-surface: #FFFFFF;--color-surface-hover: #F5F5DC;--color-text: #2C1810;--color-text-secondary: #5D4037;--color-text-muted: #8D6E63;--color-border: #D7CCC8;--color-border-light: #EFEBE9;--color-success: #4CAF50;--color-warning: #FF9800;--color-error: #F44336;--color-info: #2196F3;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-size-5xl: 3rem;--font-size-6xl: 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767px;--breakpoint-tablet: 1023px;--breakpoint-desktop: 1024px}[data-theme=dark]{--color-primary: #A0522D;--color-primary-light: #BC6C3C;--color-primary-dark: #8B4513;--color-accent: #E89A5B;--color-accent-light: #F4B183;--color-bg: #1A1410;--color-bg-secondary: #2C2218;--color-surface: #3E3228;--color-surface-hover: #4A3A2E;--color-text: #F5E6D3;--color-text-secondary: #D7C4B0;--color-text-muted: #A89580;--color-border: #5D4D3F;--color-border-light: #4A3A2E;--color-success: #66BB6A;--color-warning: #FFA726;--color-error: #EF5350;--color-info: #42A5F5;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .3);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5), 0 10px 10px -5px rgba(0, 0, 0, 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var(--transition-fast)}a:hover{color:var(--color-primary-light)}button{font-family:inherit;font-size:inherit;line-height:inherit;border:none;background:none;cursor:pointer;padding:0;color:inherit}button:disabled{cursor:not-allowed;opacity:.6}input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #8b45131a}[data-theme=dark] input:focus,[data-theme=dark] textarea:focus,[data-theme=dark] select:focus{box-shadow:0 0 0 3px #a0522d33}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 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transparent}.timer-display.work{border-color:var(--color-primary)}.timer-display.break{border-color:var(--color-accent)}.session-type{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-text-secondary);margin-bottom:var(--spacing-md);text-transform:uppercase;letter-spacing:.05em}.time{font-size:var(--font-size-6xl);font-weight:var(--font-weight-bold);font-family:var(--font-family-mono);color:var(--color-primary);line-height:1;margin:var(--spacing-lg) 0}.timer-display.break .time{color:var(--color-accent)}.session-counter{font-size:var(--font-size-base);color:var(--color-text-muted);margin-top:var(--spacing-md)}.timer-controls{display:flex;gap:var(--spacing-md);flex-wrap:wrap;justify-content:center}.btn-large{padding:var(--spacing-md) 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var(--spacing-md);background-color:var(--color-bg-secondary);border-radius:var(--radius-md)}.monthly-label{font-size:var(--font-size-base);color:var(--color-text-secondary)}.monthly-value{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-primary)}@media(max-width:767px){.stats-grid{grid-template-columns:1fr}.chart{height:150px}.chart-label{font-size:10px}.monthly-stat{flex-direction:column;align-items:flex-start;gap:var(--spacing-xs)}}.settings-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--spacing-md)}.settings-modal{background-color:var(--color-bg);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);max-width:600px;width:100%;max-height:90vh;display:flex;flex-direction:column}.settings-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.settings-header h2{margin:0;font-size:var(--font-size-2xl)}.close-btn{font-size:var(--font-size-2xl);color:var(--color-text-muted)}.close-btn:hover{color:var(--color-text)}.settings-content{overflow-y:auto;padding:var(--spacing-lg)}.settings-section{margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-xl);border-bottom:1px solid var(--color-border-light)}.settings-section:last-child{border-bottom:none}.settings-section h3{font-size:var(--font-size-xl);margin-bottom:var(--spacing-lg);color:var(--color-primary)}.settings-section h4{font-size:var(--font-size-lg);margin-bottom:var(--spacing-md);color:var(--color-text-secondary)}.setting-item{margin-bottom:var(--spacing-md)}.setting-item label{display:block;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);margin-bottom:var(--spacing-xs)}.setting-item input[type=number],.setting-item 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input[type=checkbox]:checked:before{transform:translate(20px)}.sound-options{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.sound-option{padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-size:var(--font-size-sm)}.sound-option:hover{border-color:var(--color-primary)}.sound-option.active{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.ambient-section{background-color:var(--color-surface);padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-md)}.data-buttons{display:flex;flex-direction:column;gap:var(--spacing-sm)}.btn-danger{background-color:var(--color-error);color:#fff}.btn-danger:hover{background-color:#d32f2f}@media(max-width:767px){.settings-modal{max-height:100vh;border-radius:0}.settings-content{padding:var(--spacing-md)}.sound-options{flex-direction:column}.sound-option{width:100%}}.app-content{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-2xl);align-items:start}.left-column{display:flex;flex-direction:column;gap:var(--spacing-xl)}.right-column{position:sticky;top:calc(var(--spacing-2xl) + 60px)}@media(max-width:1023px){.app-content{grid-template-columns:1fr}.right-column{position:static}}