/* Remilia-inspired dark theme */
:root {
    --color-bg: #0a0a0a;
    --color-bg-alt: #1a1a1a;
    --color-text: #e0e0e0;
    --color-text-dim: #a0a0a0;
    --color-accent-pink: #ff69b4;
    --color-accent-blue: #89cff0;
    --color-border: #333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0px;
    line-height: 1.6;
}

h1 {
    text-align: center;
    font-size: 3em;
    margin-bottom: 20px;
    color: var(--color-accent-pink);
}

h2 {
    color: var(--color-accent-blue);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.explanation {
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 20px;
    background-color: var(--color-bg-alt);
    border-left: 3px solid var(--color-accent-pink);
}

.explanation ul {
    margin: 15px 0;
    padding-left: 30px;
}

.explanation li {
    margin: 10px 0;
}

#converter {
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 20px;
    background-color: var(--color-bg-alt);
    border-left: 3px solid var(--color-accent-blue);
}

.converter-row {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    margin: 20px 0;
}

.converter-column {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
}

.date-inputs {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.date-inputs input[type="number"] {
    width: 80px;
}

.date-inputs select {
    flex: 1;
    min-width: 120px;
}

.converter-row label {
    display: block;
    margin-bottom: 10px;
    color: var(--color-accent-pink);
    font-weight: bold;
}

.converter-row input,
.converter-row select {
    background-color: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    padding: 8px;
    border-radius: 3px;
    font-size: 14px;
}

.converter-row input:focus,
.converter-row select:focus {
    outline: none;
    border-color: var(--color-accent-blue);
}

.converter-row button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: var(--color-accent-pink);
    color: var(--color-bg);
    border: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.2s;
    align-self: flex-start;
}

.converter-row button:hover {
    background-color: var(--color-accent-blue);
}

#conversion-result {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--color-bg);
    border-left: 3px solid var(--color-accent-blue);
    min-height: 20px;
}

#year-controls {
    text-align: center;
    margin-bottom: 20px;
}

#year-controls button {
    padding: 10px 15px;
    font-size: 18px;
    cursor: pointer;
    background-color: var(--color-accent-pink);
    color: var(--color-bg);
    border: none;
    margin: 0 5px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.2s;
}

#year-controls button:hover {
    background-color: var(--color-accent-blue);
}

#year-controls input {
    width: 80px;
    text-align: center;
    font-size: 18px;
    padding: 5px;
    background-color: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-accent-pink);
    border-radius: 5px;
}

#current-year {
    text-align: center;
    font-size: 2em;
    margin-bottom: 20px;
    color: var(--color-accent-blue);
}

#calendar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.month {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    width: 235px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.month h2 {
    text-align: center;
    background-color: var(--color-accent-pink);
    color: var(--color-bg);
    margin: 0;
    padding: 10px 0;
    font-size: 1.2em;
}

.current-month h2 {
    background-color: var(--color-accent-blue);
}

.weekdays, .days {
    display: flex;
    flex-wrap: wrap;
}

.weekdays div, .days div {
    width: calc(100% / 7);
    text-align: center;
    padding: 8px 0;
    box-sizing: border-box;
    border-bottom: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
}

.weekdays div:nth-child(7n),
.days div:nth-child(7n) {
    border-right: none;
}

.weekdays {
    background-color: var(--color-bg);
    font-weight: bold;
    color: var(--color-accent-blue);
}

.days div {
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.days div:hover:not(:empty) {
    background-color: var(--color-bg);
    cursor: pointer;
}

.current-day {
    background-color: var(--color-accent-pink);
    color: var(--color-bg);
    font-weight: bold;
}

.highlighted-day {
    background-color: var(--color-accent-blue) !important;
    color: var(--color-bg);
    font-weight: bold;
}

.days div[data-gregorian] {
    position: relative;
    cursor: help;
}

.days div[data-gregorian]:hover::after {
    content: attr(data-gregorian);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-bg);
    color: var(--color-text);
    padding: 8px 12px;
    border: 1px solid var(--color-accent-blue);
    border-radius: 5px;
    white-space: nowrap;
    z-index: 1000;
    font-size: 12px;
    margin-bottom: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }
    
    .converter-row {
        flex-direction: column;
    }
    
    .month {
        width: 100%;
        max-width: 350px;
    }
}