@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap";:root{--bg-color: #0d1117;--card-bg: rgba(22, 27, 34, .7);--text-primary: #e6edf3;--text-secondary: #8b949e;--accent-work: #ff6b6b;--accent-short: #4ecdc4;--accent-long: #ffe66d;--glass-border: rgba(255, 255, 255, .1);--font-main: "Outfit", sans-serif;--transition-speed: .3s}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-primary);display:flex;justify-content:center;align-items:center;min-height:100vh;margin:0;overflow:hidden}body:before{content:"";position:absolute;top:-20%;left:-20%;width:140%;height:140%;background:radial-gradient(circle at 50% 50%,rgba(255,107,107,.1),transparent 60%),radial-gradient(circle at 10% 80%,rgba(78,205,196,.1),transparent 50%);z-index:-1;animation:drift 20s infinite alternate ease-in-out}@keyframes drift{0%{transform:scale(1)}to{transform:scale(1.1)}}.app-container{width:100%;max-width:480px;padding:2rem;perspective:1000px}.glass-card{background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:24px;padding:2.5rem;box-shadow:0 8px 32px #0000004d;transition:transform .4s cubic-bezier(.175,.885,.32,1.275);display:flex;flex-direction:column;gap:2rem}.glass-card:hover{transform:translateY(-5px)}.brain-mode-tabs{display:flex;background:#0003;padding:.5rem;border-radius:50px;justify-content:space-between;margin-bottom:1rem}.tab-btn{background:transparent;border:none;color:var(--text-secondary);font-family:var(--font-main);font-weight:600;padding:.6rem 1.2rem;border-radius:50px;cursor:pointer;transition:all var(--transition-speed);font-size:.9rem;flex:1}.tab-btn.active{background:#ffffff1a;color:var(--text-primary);box-shadow:0 2px 10px #0000001a}.timer-display{font-size:6rem;font-weight:700;text-align:center;line-height:1;font-variant-numeric:tabular-nums;text-shadow:0 0 20px rgba(255,255,255,.1);transition:color var(--transition-speed)}.timer-display.work{color:var(--accent-work);text-shadow:0 0 30px rgba(255,107,107,.4)}.timer-display.short{color:var(--accent-short);text-shadow:0 0 30px rgba(78,205,196,.4)}.timer-display.long{color:var(--accent-long);text-shadow:0 0 30px rgba(255,230,109,.4)}.session-info{text-align:center;color:var(--text-secondary);font-size:1rem;margin-top:-1rem}.controls{display:flex;justify-content:center;gap:1.5rem}.btn-primary{background:var(--text-primary);color:var(--bg-color);border:none;padding:1rem 3rem;font-size:1.2rem;font-weight:700;border-radius:16px;cursor:pointer;transition:transform .2s,box-shadow .2s;text-transform:uppercase;letter-spacing:1px}.btn-primary:active{transform:scale(.95)}.btn-primary.running{background:#ffffff1a;color:var(--text-primary);border:1px solid var(--glass-border)}.btn-icon{background:transparent;border:1px solid var(--glass-border);color:var(--text-primary);width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s}.btn-icon:hover{background:#ffffff1a}.btn-icon svg{width:20px;height:20px}.settings-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0009;display:flex;justify-content:center;align-items:center;z-index:100;opacity:0;pointer-events:none;transition:opacity .3s}.settings-overlay.open{opacity:1;pointer-events:all}.settings-modal{background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);padding:2rem;border-radius:24px;width:90%;max-width:400px;border:1px solid var(--glass-border);box-shadow:0 10px 40px #0000004d;overflow:hidden}.settings-modal h2{margin-bottom:1.5rem;display:flex;justify-content:space-between;align-items:center;color:var(--text-primary)}.setting-item{margin-bottom:1.2rem}.setting-item label{display:block;color:var(--text-secondary);margin-bottom:.5rem;font-size:.9rem}.setting-item input{width:100%;background:#0000004d;border:1px solid var(--glass-border);color:var(--text-primary);padding:.8rem;border-radius:10px;font-family:var(--font-main);font-size:1rem}.setting-item input:focus{outline:none;border-color:var(--text-primary)}.close-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1.5rem}.close-btn:hover{color:var(--text-primary)}