:root {
    /* プライマリ（ティール系） */
    --color-primary: #2DA1AD;
    --color-primary-hover: #1b97a3;
    --color-primary-dark: #076972;
    --color-primary-light: #DFF3F4;
    --color-primary-pale: #dff2f4;

    /* リンク */
    --color-link: #42acb6;
    --color-link-hover: #6bd0da;

    /* ロゴ */
    --color-logo: #004851;
    --color-logo-accent: #e63946;

    /* テキスト */
    --color-text: #333333;
    --color-text-secondary: #9A9B9C;
    --color-text-muted: #999999;
    --color-text-placeholder: #aaaaaa;
    --color-text-white: #ffffff;

    /* ボーダー */
    --color-border: #cccccc;
    --color-border-light: #dcdcdc;
    --color-border-secondary: #9A9B9C;

    /* 背景 */
    --color-bg: #ffffff;
    --color-bg-gray: #f5f5f5;
    --color-bg-light: #f8f8f8;

    /* 機能色 */
    --color-danger: #cc0000;
    --color-accent: #eb613b;
    --color-accent-hover: #eb613b;

    /* 成功・警告・セカンダリ */
    --color-success: #28a745;
    --color-success-hover: #218838;
    --color-success-bg: #f0fdf4;
    --color-success-border: #bbf7d0;
    --color-success-text: #166534;

    --color-danger-bg: #fef2f2;
    --color-danger-border: #fecaca;
    --color-danger-text: #991b1b;

    --color-secondary: #6c757d;

    /* カレンダー */
    --color-calendar-weekday: #b3b3b3;
    --color-calendar-sat: #4a94c4;
    --color-calendar-sun: #ee6a6a;
    --color-calendar-outside-day: #e2e2e2;
    --color-calendar-outside-sat: #B8D2E4;
    --color-calendar-outside-sun: #F4BCBC;
    --color-calendar-disabled: #f8f8f8;
    --color-calendar-status-registered-bg: #e8f8f8;
    --color-calendar-status-registered-border: #9cd7dc;
    --color-calendar-status-registered-text: #0a6670;
    --color-calendar-status-released-bg: #f9fae0;
    --color-calendar-status-released-border: #c8d1da;
    --color-calendar-status-released-text: #4a5968;
    --color-calendar-status-error-bg: #fef2f2;
    --color-calendar-status-error-border: #fecaca;
    --color-calendar-status-error-text: #991b1b;

    /* コンテンツサイズ */
    --content-width: 1000px;
    --content-width-login: 370px;
    --content-width-form: 960px;
}   

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

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: Verdana, "ヒラギノ角ゴ ProN W3" , "Hiragino Kaku Gothic ProN" , "メイリオ", Meiryo, "ＭＳ Ｐゴシック", sans-serif;
    font-size: .85rem;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

a:link {
    color: var(--color-link);
    text-decoration: none;
}

a:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

main {
    background: var(--color-bg-gray);
    flex: 1;
}

main.main--plain {
    background: transparent;
}

h1{
    font-size: 28px;
}

button{
    border: none;
    cursor: pointer;
}

ul {
    list-style: none;
}

/* ========================================
   Site Header
   ======================================== */
.site-header {
    display: flex;
    align-items: end;
    padding: 20px 32px;
    gap: 10px;
}
.admin-page-title{
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
}
.site-header__logo img {
    display: block;
    height: 40px;
    width: auto;
}

/* ========================================
   Site Footer
   ======================================== */
.site-footer {
    margin-top: auto;
    background: var(--color-primary-light);
}
.site-footer__info {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 20px 32px;
    box-sizing: content-box;
}
.site-footer__logo img {
    height: 30px;
    width: auto;
}
.site-footer__address {
    font-size: 0.85rem;
    line-height: 1.6;
}
.site-footer__office-btn {
    background: url(https://www.mihama.com/common/images/arrow01.gif) no-repeat left center;
    padding-left: 25px !important;
    color: var(--color-text) !important;
}

.site-footer__office-btn span {
    font-size: 0.6rem;
}
.site-footer__nav {
    background: var(--color-primary);
    padding: 10px 32px;
}

.site-footer__nav nav {
    max-width: var(--content-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.site-footer__links {
    display: flex;
    gap: 16px;
}
.site-footer__links a {
    color: var(--color-text-white);
    text-decoration: none;
    font-size: 0.75rem;
}
.site-footer__links a::before {
    content: '>';
    margin-right: 4px;
}
.site-footer__links a:hover {
    text-decoration: underline;
}
.site-footer__copyright {
    color: var(--color-text-white);
    font-size: 0.7rem;
}
.contact-info-wrp {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    justify-content: center;
    flex-wrap: wrap;
  }
  .contact-box {
    border: 1px solid var(--color-primary);
    margin: 6px;
    height: 44px;
    display: flex;
    background: var(--color-bg);
    padding: 10px 0 10px 14px;
  }
  .contact-box a {
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    align-items: center;
  }
  .contact-box a p:first-child {
    margin-right: 14px;
  }
  .contact-box img {
    width: 16px;
    margin-right: 5px;
  }

/* ========================================
   Admin Navigation
   ======================================== */
.admin-nav-wrap {
    background: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border-light);
}
.admin-nav {
    max-width: var(--content-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0;
    border-left: 1px solid var(--color-border-light);
}

.admin-nav__item:last-of-type{
    border-right: 1px solid var(--color-border-light);
}
.admin-nav form {
    flex: 1;
    text-align: right;
}

.admin-nav__item {
    display: inline-block;
    padding: 12px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}
.admin-nav__item:hover {
    color: var(--color-primary);
    text-decoration: none;
}
.admin-nav__item--active {
    color: var(--color-text);
    background: var(--color-primary-light);
    text-decoration: unset;
}
.admin-nav__logout {
    border: none;
    background: transparent;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
    transition: color 0.2s;
    padding-inline: 8px
}
.admin-nav__logout:hover {
    color: var(--color-primary);
}

@media (max-width: 600px) {
    .site-header { padding: 16px 20px; }
    .site-footer__info {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 16px 20px;
    }
    .site-footer__nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 10px 20px;
    }
    .admin-nav {
        padding: 0 20px;
        gap: 0;
    }
    .admin-nav__item {
        padding: 10px 12px;
        font-size: 0.8rem;
    }
}

/* ========================================
   Page Title
   ======================================== */
.page-title{
    text-align: center;
    color: var(--color-primary);
    margin-bottom: 54px;
}

.page-subtitle{
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text);
}


/* ========================================
   Buttons
   ======================================== */
   .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 34px;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, box-shadow 0.2s;
    line-height: 1.4;
}
.btn-sm {
    padding: 9px 34px;
    font-size: 18px;
}
.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-white);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
}
.btn-success {
    background: var(--color-success);
    color: var(--color-text-white);
}
.btn-success:hover {
    background: var(--color-success-hover);
    box-shadow: 0 2px 6px rgba(40, 167, 69, 0.3);
}
.btn-danger {
    background: var(--color-danger);
    color: var(--color-text-white);
}
.btn-danger:hover {
    background: #a30000;
    box-shadow: 0 2px 6px rgba(204, 0, 0, 0.3);
}
.btn-secondary {
    background: var(--color-bg);
    border: 1px solid var(--color-border-secondary);
    color: var(--color-text-secondary);
}
.btn-secondary:hover {
    color: var(--color-text-white);
    background: var(--color-border-secondary);
}
.btn-login{
    margin-top: 38px;
}