:root{--bg-color: #f4f4f4;--text-color: #333;--header-bg: #fff;--header-shadow: rgba(0, 0, 0, .1);--card-text: white;--modal-bg: white;--modal-text: #333;--modal-shadow: rgba(0, 0, 0, .2);--input-border: #ccc;--input-focus-border: #aaa;--button-hover-bg: #f4f4f4;--scrollbar-track: rgba(0, 0, 0, .1);--scrollbar-thumb: rgba(0, 0, 0, .3);--scrollbar-thumb-hover: rgba(0, 0, 0, .4);--placeholder-color: rgba(0, 0, 0, .5)}body{font-family:sans-serif;margin:0;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s ease,color .3s ease}body.dark{--bg-color: #222;--text-color: #eee;--header-bg: #333;--header-shadow: rgba(255, 255, 255, .1);--card-text: white;--modal-bg: #444;--modal-text: #eee;--modal-shadow: rgba(0, 0, 0, .5);--input-border: #555;--input-focus-border: #777;--button-hover-bg: #555;--scrollbar-track: rgba(255, 255, 255, .1);--scrollbar-thumb: rgba(255, 255, 255, .3);--scrollbar-thumb-hover: rgba(255, 255, 255, .4);--placeholder-color: rgba(255, 255, 255, .5)}header{display:flex;justify-content:space-between;align-items:center;padding:15px 40px;background-color:var(--header-bg);box-shadow:0 2px 4px var(--header-shadow)}.logo-container{display:flex;align-items:center;gap:10px}.header-logo-img{height:40px;width:40px}.logo{font-size:2.5em;font-weight:700}.logo-ist{color:#ff8c00}.header-controls{display:flex;align-items:center}.add-card-input-area{display:flex;align-items:center;gap:8px}.add-card-title-input{padding:8px 12px;border:1px solid var(--input-border);border-radius:15px;font-size:1em;min-width:200px;background-color:#fff;color:var(--text-color)}.dark .add-card-title-input{background-color:#555;border:1px solid var(--input-border);color:var(--text-color)}.add-card-title-input:focus{outline:none;border-color:var(--input-focus-border);box-shadow:0 0 3px var(--input-focus-border)}.confirm-add-card-btn,.cancel-add-card-btn{background:none;border:none;cursor:pointer;font-size:1.4em;padding:5px;line-height:1;color:#888;transition:color .2s ease}.dark .confirm-add-card-btn,.dark .cancel-add-card-btn{color:#aaa}.confirm-add-card-btn:hover{color:#28a745}.cancel-add-card-btn:hover{color:#dc3545}.new-card-btn{padding:10px 20px;border:none;border-radius:20px;background:linear-gradient(90deg,#ff4e50,#f9d423,#3cf);color:#fff;font-size:1em;cursor:pointer;display:flex;align-items:center;gap:8px;box-shadow:0 2px 5px #0003;transition:transform .2s ease}.new-card-btn:hover{transform:scale(1.05)}.new-card-btn .fas,.edit-btn .fas,.user-icon .fas{display:inline-block}.user-menu-container{position:relative;margin-left:20px}.user-icon{font-size:2.5em;color:#ccc;cursor:pointer;display:flex;align-items:center}.dark .user-icon{color:#888}.user-icon:hover{color:#aaa}.dark .user-icon:hover{color:#ccc}.user-dropdown{position:absolute;top:100%;right:0;background-color:var(--modal-bg);border-radius:8px;box-shadow:0 4px 12px var(--modal-shadow);padding:8px 0;margin-top:8px;min-width:160px;z-index:100;overflow:hidden;opacity:0;transform:translateY(-10px);animation:fadeInDown .2s ease-out forwards}.dropdown-item{display:block;width:100%;background:none;border:none;text-align:left;padding:10px 16px;font-size:1em;color:var(--modal-text);cursor:pointer;transition:background-color .15s ease}.dark .dropdown-item{color:var(--text-color)}.dropdown-item:hover{background-color:var(--button-hover-bg)}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.card-container{display:flex;justify-content:flex-start;flex-wrap:nowrap;gap:30px;padding:40px 40px 60px;overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--scrollbar-track) var(--scrollbar-track)}.card-container::-webkit-scrollbar{height:12px}.card-container::-webkit-scrollbar-track{background:var(--scrollbar-track);border-radius:10px}.card-container::-webkit-scrollbar-thumb{background-color:var(--scrollbar-thumb);border-radius:10px;border:3px solid var(--scrollbar-track)}.card-container::-webkit-scrollbar-thumb:hover{background-color:var(--scrollbar-thumb-hover)}.card{width:280px;min-height:350px;border-radius:20px;padding:15px 25px 60px;color:var(--card-text);box-shadow:0 4px 15px #0003;position:relative;display:flex;flex-direction:column;flex-shrink:0}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;min-height:28px;padding:0 5px}.card-header h2{margin:0;font-size:1.8em;font-weight:700;flex-grow:1;padding-right:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer}.card-title-input{font-size:1.8em;font-weight:700;color:var(--card-text);background-color:#ffffff26;border:none;border-radius:5px;padding:0 5px;margin:0;flex-grow:1;outline:none;box-sizing:border-box;min-width:0}.card-title-input:focus{background-color:#ffffff40}.card ul{list-style:none;padding:0;margin:0 0 15px;flex-grow:1}.card li{margin-bottom:12px;font-size:1.1em;position:relative;padding-right:35px}.card li.task-item{display:flex;align-items:center;justify-content:space-between}.card li.checked{opacity:.6}.card li.checked label{text-decoration:line-through}.card li.no-checkbox{padding-left:28px}.checkbox-container{position:relative;flex-grow:1;display:flex;align-items:center}.checkbox-container input[type=checkbox]{opacity:0;position:absolute;width:0;height:0}.checkbox-container label{position:relative;padding-left:30px;cursor:pointer;display:inline-block;line-height:1.2;-webkit-user-select:none;user-select:none;flex-grow:1;padding-right:10px}.checkbox-container label:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:18px;height:18px;background-color:#ffffff4d;border:1px solid rgba(255,255,255,.5);border-radius:4px;transition:background-color .2s ease,border-color .2s ease}.checkbox-container input[type=checkbox]:checked+label:before{background-color:#ffffffb3;border-color:#fffc}.checkbox-container label:after{content:"";position:absolute;left:6px;top:4px;width:5px;height:10px;border:solid white;border-width:0 3px 3px 0;transform:rotate(45deg);opacity:0;transition:opacity .2s ease}.checkbox-container input[type=checkbox]:checked+label:after{opacity:1}.card label{cursor:pointer}.band{background:linear-gradient(135deg,#ff4e50,#fc00ff)}.school{background:linear-gradient(135deg,#3cf,#007bff)}.work{background:linear-gradient(135deg,#f9d423,#ff8c00)}.movies{background:linear-gradient(135deg,#90ee90,#32cd32)}.personal{background:linear-gradient(135deg,#ff6b6b,#f06595)}.shopping{background:linear-gradient(135deg,#74c0fc,#a5d8ff)}.card-actions{position:absolute;bottom:15px;right:15px;display:flex;gap:8px}.edit-btn{background-color:#ffffff4d;border:none;border-radius:10px;color:#fff;font-size:1.2em;cursor:pointer;width:40px;height:40px;display:flex;justify-content:center;align-items:center;transition:background-color .2s ease;order:2}.edit-btn:hover{background-color:#ffffff80}.ai-steps-btn{background-color:#ffffff4d;border:none;border-radius:10px;color:#fff;cursor:pointer;width:40px;height:40px;display:flex;justify-content:center;align-items:center;transition:background-color .2s ease;order:1;padding:5px}.ai-steps-img{display:block;width:80%;height:80%;object-fit:contain;filter:brightness(0) invert(1)}.ai-steps-btn:hover{background-color:#ffffff80}.delete-card-btn{background:#dc3545b3;color:#fff;border:none;border-radius:50%;width:28px;height:28px;font-size:.9em;cursor:pointer;display:flex;justify-content:center;align-items:center;transition:background-color .2s ease;flex-shrink:0}.delete-card-btn:hover{background:#dc3545}.delete-task-btn{position:absolute;right:5px;top:50%;transform:translateY(-50%);background:none;border:none;color:#ffffffb3;font-size:1em;cursor:pointer;opacity:0;transition:opacity .2s ease;padding:5px;line-height:1}.card li:hover .delete-task-btn{opacity:1}.delete-task-btn:hover{color:#fff}.add-task-area{max-height:0;opacity:0;overflow:hidden;transition:max-height .4s ease-out,opacity .3s ease-in-out,margin-top .4s ease-out;margin-top:0}.card .add-task-area{max-height:100px;opacity:1;margin-top:10px}.add-task-input{width:100%;padding:8px 12px;border:1px solid rgba(255,255,255,.5);border-radius:8px;background-color:#fff3;color:var(--card-text);font-size:1em;box-sizing:border-box}.dark .add-task-input{border:1px solid rgba(255,255,255,.3)}.add-task-input::placeholder{color:var(--placeholder-color)}.dark .add-task-input::placeholder{color:#ffffffb3}.add-task-input:focus{outline:none;border-color:#fffc;background-color:#ffffff4d}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;opacity:0;animation:fadeIn .3s ease-out forwards}.modal-content{background-color:var(--modal-bg);color:var(--modal-text);padding:30px 40px;border-radius:12px;box-shadow:0 5px 20px var(--modal-shadow);position:relative;min-width:300px;max-width:90%;transform:scale(.95);animation:scaleUp .3s ease-out forwards}.modal-content h2{margin-top:0;margin-bottom:25px;text-align:center}.modal-close-btn{position:absolute;top:15px;right:15px;background:none;border:none;font-size:1.6em;cursor:pointer;color:var(--modal-text);opacity:.6;transition:opacity .2s ease}.modal-close-btn:hover{opacity:1}.setting-item{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:10px 0;border-bottom:1px solid var(--input-border)}.setting-item:last-child{border-bottom:none;margin-bottom:0}.setting-item label{font-size:1.1em}.switch{position:relative;display:inline-block;width:50px;height:26px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.4s}.slider:before{position:absolute;content:"";height:18px;width:18px;left:4px;bottom:4px;background-color:#fff;transition:.4s}input:checked+.slider{background-color:#ff8c00}.dark input:checked+.slider{background-color:#ffac4d}input:focus+.slider{box-shadow:0 0 1px #ff8c00}input:checked+.slider:before{transform:translate(24px)}.slider.round{border-radius:34px}.slider.round:before{border-radius:50%}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleUp{0%{transform:scale(.95);opacity:.5}to{transform:scale(1);opacity:1}}h2{margin:0}