.timer{display:flex;justify-content:center;align-items:center;padding:48px;margin:32px 0;border-radius:12px;transition:background-color .3s ease}.timer.pomodoro{background-color:var(--color-primary)}.timer.short-break{background-color:var(--color-short-break)}.timer.long-break{background-color:var(--color-long-break)}.timer-display{font-size:120px;font-weight:700;font-family:Space Mono,monospace;color:var(--color-text);line-height:1;text-shadow:4px 4px 0px rgba(0,0,0,.1)}@media(max-width:768px){.timer{padding:32px;margin:24px 0}.timer-display{font-size:72px}}@media(max-width:480px){.timer{padding:24px;margin:16px 0}.timer-display{font-size:56px}}.button{padding:16px 32px;font-size:18px;font-weight:700;border:3px solid #000;box-shadow:4px 4px #000;cursor:pointer;transition:all .1s ease;font-family:inherit;color:var(--color-text);border-radius:8px;min-width:120px}.button--small{padding:12px 24px;font-size:16px;min-width:auto}.button--medium{padding:16px 32px;font-size:18px;min-width:120px}.button--large{padding:20px 48px;font-size:24px;min-width:160px}.button--primary{color:var(--color-button-active-text);background-color:var(--color-primary);transition:background-color .3s ease}.button--primary.button--pomodoro{background-color:var(--color-primary)}.button--primary.button--short-break{background-color:var(--color-short-break)}.button--primary.button--long-break{background-color:var(--color-long-break)}.button--secondary{background-color:#fff;color:var(--color-text)}.button--pomodoro.button--active{background-color:var(--color-primary);color:var(--color-button-active-text);transition:background-color .3s ease}.button--short-break.button--active{background-color:var(--color-short-break);color:var(--color-button-active-text);transition:background-color .3s ease}.button--long-break.button--active{background-color:var(--color-long-break);color:var(--color-button-active-text);transition:background-color .3s ease}.button--pomodoro:not(.button--active):not(.button--primary),.button--short-break:not(.button--active):not(.button--primary),.button--long-break:not(.button--active):not(.button--primary){background-color:#fff;color:var(--color-text)}.button:hover:not(.button--disabled){transform:translate(-2px,-2px);box-shadow:6px 6px #000}.button:active:not(.button--disabled){transform:translate(4px,4px);box-shadow:2px 2px #000}.button--disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.button--medium{padding:14px 24px;font-size:16px;min-width:100px}.button--large{font-size:20px;padding:16px 32px;min-width:140px}}@media(max-width:480px){.button--small{padding:10px 16px;font-size:14px}}.mode-selector{display:flex;gap:12px;justify-content:center;margin-bottom:24px;flex-wrap:wrap}.mode-selector .button{text-transform:capitalize}@media(max-width:480px){.mode-selector{gap:8px}}.controls{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}@media(max-width:768px){.controls{gap:12px;margin-top:24px}}@media(max-width:480px){.controls{flex-direction:column;gap:12px}.controls .button{width:100%;min-width:unset}}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.app-title{font-size:42px;margin-bottom:32px;color:var(--color-text);text-align:center;font-weight:700}.session-counter{margin-top:32px;padding-top:24px;border-top:3px solid #000}.session-text{font-size:18px;color:var(--color-text);margin:0}.session-text strong{font-weight:700;color:var(--color-primary);font-size:24px}.reset-sessions-link{margin-top:8px;font-size:14px;color:#666;text-decoration:underline;background:none;border:none;cursor:pointer;padding:4px 8px;transition:color .2s ease;font-family:inherit}.reset-sessions-link:hover{color:var(--color-primary)}@media(max-width:768px){.app{padding:16px}.app-title{font-size:32px;margin-bottom:24px}.session-counter{margin-top:24px;padding-top:20px}.session-text{font-size:16px}.session-text strong{font-size:20px}}@media(max-width:480px){.app{padding:12px}.app-title{font-size:28px;margin-bottom:20px}}