@font-face {
    font-family: 'KeiFont';
    src: url('keifont.ttf') format('truetype');
    font-display: swap;
}

:root {
    --bg-color: #fdfcf8;
    --main-color: #e6dec3;
    --accent-color: #d0e6a5;
    --accent-dark: #a8c474;
    --text-color: #4a4a4a;
    --text-light: #7a7a7a;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.08);
    --radius: 16px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'KeiFont', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    background-image:
        radial-gradient(var(--main-color) 1px, transparent 1px),
        radial-gradient(var(--main-color) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: 0 0, 20px 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #6d5f48;
}

header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Calendar Grid */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.calendar-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
}

.calendar-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-image-wrapper {
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 15px;
    cursor: pointer;
    background-color: #fafafa;
    aspect-ratio: 16 / 9;
    /* Adjustment for consistency, though images might be different */
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.calendar-card:hover img {
    transform: scale(1.05);
}

.card-month {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--text-color);
}

.download-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--main-color);
    color: #5d503b;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    margin-top: auto;
}

.download-btn:hover {
    background-color: var(--accent-color);
    color: #fff;
    transform: scale(1.05);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    opacity: 1;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    border-radius: 8px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 1001;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px dashed var(--main-color);
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.8rem;
    }

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