:root {
    --bg-color: #121212;
    --card-bg: #1c1c1c;
    --text-primary: #e4e4e4;
    --text-dim: #999;
    --gold: #b38b4d;
    --gold-hover: #d1b17a;
    --border-color: #333333;
    --pref-bg: #262626;
    --pref-bg-hover: #383838;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'IBM Plex Sans JP', 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    letter-spacing: 0.5px;
}

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

.main-title {
    text-align: center;
    color: var(--gold);
    margin-bottom: 30px;
    font-weight: 500;
    font-size: 28px;
    letter-spacing: 2px;
}

/* Search Container */
.search-container {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .search-container {
        flex-direction: column;
    }
}

.search-container input,
.search-container select {
    padding: 14px 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.2s;
    outline: none;
}

.search-container input {
    flex: 1;
}

.search-container select {
    width: 200px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e4e4e4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    padding-right: 40px;
}

@media (max-width: 768px) {
    .search-container select {
        width: 100%;
    }
}

.search-container input:focus,
.search-container select:focus {
    border-color: var(--gold);
}

/* Grid Layout for Regions */
.regions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

@media (max-width: 768px) {
    .regions-grid {
        grid-template-columns: 1fr;
    }
}

/* Region Card */
.region-card {
    background-color: var(--card-bg);
    border-radius: 6px;
    padding: 28px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    border: 1px solid #232323;
}

.region-title {
    color: var(--gold);
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: 1.5px;
    font-family: 'Noto Serif JP', serif;
}

/* Prefectures Grid within Card */
.prefectures-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* Prefecture Item */
.prefecture-item {
    background-color: var(--pref-bg);
    border-radius: 4px;
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.prefecture-item:hover {
    background-color: var(--pref-bg-hover);
}

.prefecture-item .count {
    font-size: 11px;
    font-weight: 400;
    color: #666;
}

/* Accordion for Stores */
.stores-list {
    display: none;
    grid-column: 1 / -1;
    background-color: #161616;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 20px;
    margin-top: 4px;
    margin-bottom: 8px;
}

.stores-list.active {
    display: block;
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.store-card {
    border-bottom: 1px dotted var(--border-color);
    padding-bottom: 16px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.store-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.store-info {
    flex: 1;
    min-width: 0; /* allows text truncation if needed */
}

.store-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--gold);
    line-height: 1.4;
}

.store-address {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.4;
}

.store-link-btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
    line-height: 1;
}

.store-link-btn:hover {
    background-color: var(--gold);
    color: #121212;
}

/* Admin Styles */
.admin-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.admin-container {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 8px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    border: 1px solid #282828;
}

.admin-container h1 {
    color: var(--gold);
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 30px;
    text-align: center;
    font-family: 'Noto Serif JP', serif;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-dim);
}

.form-group input {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    background-color: #181818;
    color: var(--text-primary);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--gold);
}

.form-group input::placeholder {
    color: #555;
}

.btn {
    width: 100%;
    padding: 16px;
    background-color: var(--gold);
    color: #121212;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
    margin-top: 10px;
}

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

#message {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
}