:root {
    --primary-color: #38a169;
    /* Green */
    --secondary-color: #3182ce;
    /* Blue */
    --primary-light: #9ae6b4;
    --secondary-light: #90cdf4;
    --primary-dark: #276749;
    --secondary-dark: #2c5282;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    background-color: #f8fafc;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
}

.hero-bg {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 800 800'%3E%3Cg fill='none' stroke='%2390CDF4' stroke-width='1'%3E%3Cpath d='M769 229L1037 260.9M927 880L731 737 520 660 309 538 40 599 295 764 126.5 879.5 40 599-197 493 102 382-31 229 126.5 79.5-69-63'/%3E%3Cpath d='M-31 229L237 261 390 382 603 493 308.5 537.5 101.5 381.5M370 905L295 764'/%3E%3Cpath d='M520 660L578 842 731 737 840 599 603 493 520 660 295 764 309 538 390 382 539 269 769 229 577.5 41.5 370 105 295 -36 126.5 79.5 237 261 102 382 40 599 -69 737 127 880'/%3E%3Cpath d='M520-140L578.5 42.5 731-63M603 493L539 269 237 261 370 105M902 382L539 269M390 382L102 382'/%3E%3Cpath d='M-222 42L126.5 79.5 370 105 539 269 577.5 41.5 927 80 769 229 902 382 603 493 731 737M295-36L577.5 41.5M578 842L295 764M40-201L127 80M102 382L-261 269'/%3E%3C/g%3E%3Cg fill='%239AE6B4'%3E%3Ccircle cx='769' cy='229' r='5'/%3E%3Ccircle cx='539' cy='269' r='5'/%3E%3Ccircle cx='603' cy='493' r='5'/%3E%3Ccircle cx='731' cy='737' r='5'/%3E%3Ccircle cx='520' cy='660' r='5'/%3E%3Ccircle cx='309' cy='538' r='5'/%3E%3Ccircle cx='295' cy='764' r='5'/%3E%3Ccircle cx='40' cy='599' r='5'/%3E%3Ccircle cx='102' cy='382' r='5'/%3E%3Ccircle cx='127' cy='80' r='5'/%3E%3Ccircle cx='370' cy='105' r='5'/%3E%3Ccircle cx='578' cy='42' r='5'/%3E%3Ccircle cx='237' cy='261' r='5'/%3E%3Ccircle cx='390' cy='382' r='5'/%3E%3C/g%3E%3C/svg%3E");
}

.card {
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    background: white;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
}

.input-field {
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.input-field:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.2);
    outline: none;
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.section-title:after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.water-drop {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.info-icon {
    color: var(--secondary-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.info-icon:hover {
    color: var(--secondary-dark);
}

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 0.9;
}

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid var(--primary-light);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.hydration-progress {
    height: 20px;
    border-radius: 10px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transition: width 1s ease-in-out;
}

.hydration-bg {
    height: 20px;
    border-radius: 10px;
    background-color: #e2e8f0;
}

#hydrationChart {
    max-width: 100%;
    max-height: 350px;
}

.related-tool {
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.related-tool:hover {
    border-left: 4px solid var(--primary-color);
    background-color: rgba(56, 161, 105, 0.05);
}

.water-animation-container {
    height: 200px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.animate-in {
    animation: fadeInUp 1s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ribbon {
    position: absolute;
    right: -5px;
    top: -5px;
    z-index: 1;
    overflow: hidden;
    width: 75px;
    height: 75px;
}

.ribbon span {
    position: absolute;
    top: 15px;
    right: -21px;
    transform: rotate(45deg);
    width: 100px;
    background: var(--primary-color);
    padding: 2px 0;
    color: white;
    text-align: center;
    font-size: 12px;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}