<style>
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: "Helvetica Neue", Arial, Helvetica, sans-serif;
    background-color: #634E34;
    color: #fafafa;
    min-height: 100vh;
    margin: 0;
    padding: 60px 20px; 
}
.container {
    display: flex;
    flex-direction: column;
    gap: 25px;
    max-width: 840px;
    width: 100%;
    margin: 0 auto;
}
.half-container {
    background-color: #1e1e1e;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    width: 100%;
}
h2 {
    margin-top: 0;
    text-align: center;
}
.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    color: #eaeaea;
    width: 100%;
}
label {
    font-size: 0.9em;
    color: #b3b3b3;
}
select {
    padding: 12px;
    font-size: 16px;
    border: 1px solid #333;
    border-radius: 6px;
    background-color: #2a2a2a;
    color: white;
    color-scheme: dark;
    width: 100%;
}
input:invalid {
    border-color: #ff4d4d;
}
.main-date-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 15px;
}
.advise-input-format {
    font-size: 0.75em;
    font-weight: normal;
    font-style: italic;
    color: #eaeaea;
}
.input-dow-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: flex-end;
}
#birthdatetime {
    padding: 8px 12px; 
    font-size: 16px; 
    border-radius: 6px; 
    border: 1px solid #444; 
    background-color: transparent; 
    font-style: normal; 
    outline: none;
    width: 290px;
    text-align: center;
    color-scheme: dark;
    font-weight: bold;
}
.main-dow {
    font-size: 1em;
    color: #E0CBB9;
    white-space: nowrap;
    min-width: 85px;
}
.settings-panel {
    display: flex;
    justify-content: space-between;
    background-color: #2a2a2a;
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}
.button-group {
    display: flex;
    gap: 10px;
}
.btn-now {
    background-color: #2a2a2a;
    color: #fafafa;
    border: 1px solid #444;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 0.85em;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    width: fit-content;
    transition: all 0.2s ease;
    font-weight: bold;
    -webkit-tap-highlight-color: transparent;
}
.btn-clear{
        background-color: #ff4d4d;
    color: #2a2a2a;
    border: 1px solid #444;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 0.85em;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    width: fit-content;
    transition: all 0.2s ease;
    font-weight: bold;
    -webkit-tap-highlight-color: transparent;
}
.toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85em;
    color: #eaeaea;
    cursor: pointer;
    padding: 5px 0;
}
.toggle-wrapper input[type="checkbox"] {
    cursor: pointer;
    width: 20px;
    height: 20px;
    accent-color: #E0CBB9;
}
.results { 
    display: flex;
    flex-direction: column;
    gap: 12px;
    display: none;
    margin-top: 5px;
}
.row {
    background-color: #2a2a2a;
    padding: 12px 15px;
    border-radius: 6px;
    display: flex;
    flex-direction:column;
    gap: 10px;
}
.row-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.0em;
    position: relative; 
}
.row-label {
    font-weight: bold;
    font-size: 1.0em;
}
.bold-number {
    font-weight: bolder;
    font-family: 'Courier New', Courier, monospace;
    font-size: 2.0em; 
    color: #E0CBB9;
}
.milestone-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px; 
    border-top: 1px dashed #444;
}
.ms-date-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.ms-date-input {
    padding: 8px 12px; 
    font-size: 16px; 
    border-radius: 6px; 
    border: 1px solid #444; 
    background-color: #1a1a1a; 
    color: #E0CBB9; 
    font-style: normal; 
    outline: none;
    width: 290px;
    text-align: center;
    color-scheme: dark;
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
}
.ms-date-input:focus { 
    border-color: #de8538; 
}
.ms-dow {
    font-size: 1em; 
    color: #E0CBB9; 
    font-family: 'Courier New', Courier, monospace;
    width: 85px; 
    text-align: left;
}
.ms-input {
    padding: 8px 12px; 
    font-size: 16px; 
    border-radius: 6px; 
    border: 1px solid #444; 
    background-color: #1a1a1a; 
    color: #E0CBB9; 
    width: 290px;
    font-family: "Courier New", Courier, monospace;
    outline: none;
    text-align: right;
    font-weight: bold;
}
.ms-input:focus { 
    border-color: #E0CBB9; 
}
.detailed-row {
    margin-top: 15px;
    background-color: #E0CBB9;
    color: #000;
    padding: 15px;
    border-radius: 6px;
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
    text-align: center;
    line-height: 1.4;
    font-size: 16px;
}
.current-time, .time-offset {
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    color: #E0CBB9;
    margin-top: 10px;
    font-family: "Courier New", Courier, monospace;
}
.footer {
    text-align: center;
    margin-top: 40px;
    padding-bottom: 10px;
}
.donation-section {
    text-align: center;
    margin-top: 25px;
    padding-top: 15px;
    border-top: 1px dashed #444;
}
.donation-text {
    font-size: 0.9em;
    color: #fafafa;
    margin-bottom: 12px;
}
.kofi-icon {
    display: inline-block;
    width: 40px;
    height: auto;
    transition: 0.3s ease;
    vertical-align: middle;
}
.linktree-icon {
    display: inline-block;
    width: 40px;
    height: 40px;
    mask: url('https://cdn.jsdelivr.net/npm/simple-icons@v11/icons/linktree.svg') no-repeat center / contain;
    -webkit-mask: url('https://cdn.jsdelivr.net/npm/simple-icons@v11/icons/linktree.svg') no-repeat center / contain;
    transition: 0.3s ease;
    background-color: #fafafa;
}
.copyright {
    font-size: 0.87em;
    margin-top: 15px;
    text-align: center;
}
@media (hover: hover) and (pointer: fine) {
    .kofi-icon:hover {
        opacity: 50%;
    }
    .linktree-icon:hover {
        background-color: #42e661;
    }
    .btn-now:hover {
        background-color: #E0CBB9;
        color: #1e1e1e;
        transition: 0.3s ease;
    }
    .btn-clear:hover {
        background-color: #2a2a2a;
        color: #ff4d4d;
        transition: 0.3s ease;
    }
}
@media (max-width: 748px) {
            body { padding: 10px; }
            .container { padding: 0; gap: 15px; width: 100%; }
            .half-container { 
                padding: 20px 10px; 
                width: 100%; 
                box-sizing: border-box !important; 
            }
            .bold-number {
                font-size: 1.75em !important; 
            }
            .row-main {
                flex-wrap: wrap;
                gap: 5px;
            }
            select { 
                width: 100% !important; 
                min-width: 0 !important; 
                box-sizing: border-box !important; 
            }
                .button-group {
        display: flex;
        justify-content: center;
        gap: 15px;
        width: 100%;
        order: 3; 
    }
            .input-group,
            .advise-input-format {
                text-align: center;
                align-items: center;
            }
            #birthdatetime,  
            .ms-date-input,
            .ms-input { 
                width: 290px !important; 
                max-width: 100% !important; 
                min-width: 0 !important; 
                box-sizing: border-box !important; 
                text-align: center; 
                margin: 0 auto !important;
                height: 44px !important;
                display: block !important;
            }
            .main-date-group { 
                flex-direction: column; 
                align-items: stretch; 
                gap: 12px; 
            }
            .input-dow-wrapper { 
                display: contents; 
            }
            .btn-now,
            .btn-clear {
        text-align: center;
        align-items: center;
        justify-content: center;
        width: 140px;
        padding: 12px 0;
        margin-top: 5px;
    }
            #birthdatetime { order: 1; }
            .main-dow { 
                order: 2; 
                width: 100%; 
                text-align: center; 
                min-width: unset; 
            }
            .btn-now { 
                order: 3; 
                width: 140px;
                padding: 12px 0;
                margin-top: 5px;
                justify-content: center;
            }
    .btn-clear { 
                order: 4; 
                width: 140px; 
                padding: 12px 0;
                margin-top: 5px;
                justify-content: center;
            }
            .milestone-container { 
                flex-direction: column; 
                align-items: stretch; 
                gap: 12px; 
            }
            
            .ms-date-group { 
                flex-direction: column; 
                width: 100%; 
                gap: 8px; 
            }
            .ms-dow { 
                width: 100%; 
                text-align: center; 
                min-width: unset; 
            }
            .settings-panel {
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
            }
        }
</style>
