*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;   
}
.body{
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    overflow-x: hidden;
}
.container{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: monospace;
    background-color: #667eea;
}
.header{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 70px;
    animation: fadeInDown 1s ease-out;
}
.header h2{
    font-size: 2.5rem;
    color: #444;
    font-family: monospace;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
.header p{
    font-size: 1.2rem;
    color: #555;
    font-family: monospace;
    margin-bottom: 40px;
}
.date-nav{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 50px;
}
.date-btn{
    font-size: 1.5rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.5s ease;
    box-shadow: 0 16px 16px rgba(0,0,0,0.3);
}
.date-btn:hover{
    background: white;
    transform: scale(1.3);
}
.date-display{
    background: rgba(255,255,255,0.5);
    border-radius: 30px;
    color: #46455d;
    padding: 10px 10px;
    font-size: 1.2rem;
    font-weight: 500;
    box-shadow:0 5px 10px rgba(0,0,0,0.3);
    text-align: center;
    min-width: 200px;
}
.goal-settinngs{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-self: center;
    text-align: center;
    gap: 5px;
    margin-bottom: 50px;
}
.goal-settinngs h3{
    font-size: 1.25rem;
    color: #444;
    margin-bottom: 10px;
}
.goal-input-groups{
    font-size: 1.1rem;
    color: #444;
}
.btn-goal{
    width: 70px;
    height: 30px;
    border: none;
    border-radius: 20px;
    font-size: 1rem;
    background: #e9e6f1;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 5px 5px rgba(0,0,0,0.2);
}
.btn-goal:hover{
    background: beige;
    transform: scale(1.05);
}
.main-content{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 80px;
}
.card{
    background: rgba(255,255,255,0.8);
    border-radius: 30px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px solid rgba(255,255,255,0.5);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}
.card h2{
    font-size: 1.5rem;
    color: #4a5568;
    margin-bottom: 1rem;
}
.card-icon {
    font-size: 2rem;
    margin-right: 15px;
}

.water-card .card-icon {
    color: #3182ce;
}

.sleep-card .card-icon {
    color: #805ad5;
}
.progress-container {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 20px auto;
}
.progress-ring{
    transform: rotate(90deg);
}
.progress-ring--circle{
    stroke: #e2e8f0;
    stroke-width: 8;
    fill: transparent;
    r: 90;
    cx: 100;
    cy: 100;
}
.progress-ring--progress {
    stroke-width: 8;
    fill: transparent;
    r: 90;
    cx: 100;
    cy: 100;
    stroke-dasharray: 565.48;
    stroke-dashoffset: 565.48;
    transition: stroke-dashoffset 0.5s ease-in-out;
}
.water-card .progress-ring--progress {
    stroke: #3182ce;
}

.sleep-card .progress-ring--progress {
    stroke: #805ad5;
}
.progress-text{
    font-size: 1.2rem;
    font-weight: bold;
    position: absolute;
    transform: translate(-50%,-50%);
    top: 50%;
    left: 50%;
}
.progress-number {
    font-size: 2rem;
    display: block;
    margin-bottom: 5px;
    text-align: center;
}
.controls{
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 7px;
}
.btn{
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    padding: 15px 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.btn:hover{
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}
.btn-primary{
    background: linear-gradient(50deg, #3182ce, #4299e1);
    color: white;
}
.btn-secondary{
    background: linear-gradient(50deg, #805ad5, #764ba2);
}
.btn-ter{
    background: linear-gradient(50deg, #e53e3e, #f56565);
    color: white;
}
.input-group{
    display: flex;
    gap: 10px;
    margin-top: 15px;
    justify-content: center;
}
.input-group input{
    font-size: 1rem;
    border: 2px solid #e2e5ea;
    border-radius: 15px;
    width: 80px;
    text-align: center;
    padding: 10px 15px;
    transition: border-color 0.3s ease;
}
.input-group input:focus {
    outline: none;
    border-color: #3182ce;
}
.achievement {
    background: linear-gradient(45deg, #48bb78, #68d391);
    color: white;
    padding: 15px;
    border-radius: 15px;
    margin-top: 20px;
    text-align: center;
    font-weight: 600;
    animation: pulse 2s infinite;
}
.hidden {
    display: none;
}
.stats-section{ 
    background: rgba(255,255,255,0.8);
    padding: 30px;
    margin-top: 30px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 40px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1.3s ease-in;
}
.stats-section h2{
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: 25px;
}
.stats-grid{
    display: flex;
    gap: 20px;
    margin-top: 20px;
}
.stat-item {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: 15px;
    transition: transform 0.3s ease;
}
.stat-item:hover {
    transform: scale(1.05);
}
.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #4a5568;
    margin-bottom: 5px;
}
.stat-level {
    font-size: 1rem;
    color: #718096;
    text-transform: uppercase;
    letter-spacing: 1px;
}



@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 20px;
    }

    .progress-container {
        width: 150px;
        height: 150px;
    }

    .progress-ring__circle,
    .progress-ring__progress {
        r: 65;
        cx: 75;
        cy: 75;
    }

    .progress-text {
        font-size: 1rem;
    }

    .progress-number {
        font-size: 1.5rem;
    }

    .date-nav {
        flex-direction: column;
        gap: 15px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 12px; 
        padding: 8px; 
    }

    .header h1 {
        font-size: 1.3rem; 
        padding: 6px 0;
    }

    .card {
        padding: 12px; 
    }

    .progress-container {
        width: 100px;
        height: 100px; 
    }

    .progress-ring__circle,
    .progress-ring__progress {
        r: 45;       
        cx: 50; 
        cy: 50;      
    }

    .progress-text {
        font-size: 0.7rem;
    }

    .progress-number {
        font-size: 1rem;
    }

    .date-nav {
        flex-direction: column;
        gap: 10px;
        font-size: 0.9rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

@media (max-width: 360px) {
    .card {
        width: 100%;             
        padding: 8px;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        align-items: center;     
    }

    .water-card,
    .sleep-card {
        width: 100%;             
        padding: 8px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 8px;                
    }

    .progress-container {
        width: 65px;
        height: 65px;
    }

    .progress-ring__circle,
    .progress-ring__progress {
        r: 28;
        cx: 32;
        cy: 32;
    }

    .progress-text {
        font-size: 0.6rem;
        text-align: center;
    }

    .progress-number {
        font-size: 0.8rem;
        font-weight: bold;
    }

    .card-title {
        font-size: 0.95rem;      
        margin-bottom: 4px;
        text-align: center;
    }

    .card-details {
        font-size: 0.7rem;
        text-align: center;
        line-height: 1.3;
    }

    .card-actions {
        display: flex;
        flex-direction: row;
        gap: 6px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .card-action-btn {
        font-size: 0.7rem;
        padding: 4px 8px;
        border-radius: 4px;
    }
}