/**
 * main.css
 */

/* ==========================================================
   Variables
   ========================================================== */
:root {
    --obi-primary: #1A237E;
    --obi-secondary: #FF7F50;
    --obi-accent: #F9CA24;
    --obi-base: #F9F9F9;
    --obi-ink: #1A1A1A;
    --obi-white: #ffffff;
    --obi-sunrise-mid: #9E3E75;
    --obi-sunset-orange: #FFB74D;
    --font-base: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

/* ==========================================================
   Base Reset
   ========================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background-color: var(--obi-base); color: var(--obi-ink);
    font-family: var(--font-base); -webkit-font-smoothing: antialiased;
    overflow-x: hidden; line-height: 1.6;
}
a { color: inherit; text-decoration: none; display: inline-block; }
img, svg { max-width: 100%; height: auto; display: block; }
button { background: transparent; border: none; font: inherit; color: inherit; cursor: pointer; padding: 0; }
address { font-style: normal; }

/* ==========================================================
   Global Utilities
   ========================================================== */
.u-text-left { text-align: left; }
.u-visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.u-inline-block { display: inline-block; }
.u-text-center { text-align: center; }
@media (min-width: 768px) { .u-hidden-md { display: none !important; } }
@media (max-width: 767px) { .u-hidden-sp { display: none !important; } .u-show-sp { display: inline-block !important; } }

/* Scrollbar */
.custom-scrollbar::-webkit-scrollbar { width: 4px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
.custom-scrollbar::-webkit-scrollbar-thumb { background: var(--obi-secondary); border-radius: 10px; }

/* ==========================================================
   Layout
   ========================================================== */
.l-root { position: relative; width: 100%; min-height: 100vh; }
.l-main { position: relative; z-index: 40; }
.l-container { max-width: 1200px; margin: 0 auto; padding: 4rem 1.5rem; }

/* Header */
.l-header {
    position: fixed; top: 0; width: 100%; z-index: 80;
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 1rem 1.5rem; background: rgba(26, 35, 126, 0.95);
    color: var(--obi-white); backdrop-filter: blur(12px); box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.l-header--transparent {
    background: transparent; backdrop-filter: none; box-shadow: none;
    padding: 2.5rem 3rem;
}
.l-header__inner { display: flex; justify-content: space-between; align-items: center; }

/* ロゴ表示最適化 */
.c-logo-link { display: flex; align-items: center; gap: 0.8rem; transition: opacity 0.3s; color: var(--obi-white); }
.c-logo-link:hover { opacity: 0.7; }
.c-logo-link__img { height: 32px; display: block; filter: drop-shadow(0 0 2px rgba(0,0,0,0.2)); }
.l-header--transparent .c-logo-link__img { filter: none; }

.c-logo-link__suffix { border-left: 1px solid rgba(255,255,255,0.2); padding-left: 0.8rem; }
.l-header--transparent .c-logo-link__suffix { border-color: rgba(255,255,255,0.2); color: var(--obi-white); }
.c-logo-link__suffix span { font-size: 0.55rem; letter-spacing: 0.15em; font-weight: bold; text-transform: uppercase; white-space: nowrap; }

.l-header__nav-desktop {
    display: none; align-items: center; gap: 1.5rem;
    font-size: 0.65rem; font-weight: bold; letter-spacing: 0.25em; text-transform: uppercase;
}
@media (min-width: 1024px) { .l-header__nav-desktop { display: flex; } }

.c-nav-link { position: relative; opacity: 0.6; transition: opacity 0.3s; padding-bottom: 4px; color: var(--obi-white); }
.c-nav-link:hover { opacity: 1; }
.c-nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px; background: currentColor; transition: width 0.3s ease; }
.c-nav-link:hover::after { width: 100%; }
.c-nav-link--accent { color: var(--obi-accent); opacity: 1; }
.l-header--transparent .c-nav-link { color: var(--obi-white); opacity: 0.8; }
.l-header--transparent .c-nav-link:hover { opacity: 1; }

.c-button {
    margin-left: 0.5rem; padding: 0.75rem 1.5rem; border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px; transition: all 0.5s ease; color: var(--obi-white);
}
.l-header--transparent .c-button { border-color: rgba(255,255,255,0.2); color: var(--obi-white); }
.c-button:hover { background: var(--obi-white); color: var(--obi-primary); }
.l-header--transparent .c-button:hover { background: var(--obi-white); color: var(--obi-primary); }

.l-header__mobile-toggle { display: block; position: relative; z-index: 90; padding: 0.5rem; color: var(--obi-white); }
.l-header--transparent .l-header__mobile-toggle { color: var(--obi-white); }
.l-header__mobile-toggle svg { transition: opacity 0.3s; }
.l-header__mobile-toggle .is-active { display: block; }
.l-header__mobile-toggle svg:not(.is-active) { display: none; }
@media (min-width: 1024px) { .l-header__mobile-toggle { display: none; } }

.l-header__mobile-overlay {
    position: fixed; top: 0; right: 0; bottom: 0; width: 85vw; max-width: 360px;
    background: var(--obi-primary); z-index: 85;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    visibility: hidden; opacity: 0; transform: translateX(100%); pointer-events: none; transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1); color: var(--obi-white);
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
}
.l-header__mobile-overlay.is-active { visibility: visible; opacity: 1; transform: translateX(0); pointer-events: auto; }
@media (min-width: 1024px) { .l-header__mobile-overlay { display: none !important; } }

/* WP Admin Bar adjustments */
body.admin-bar .l-header { top: 32px; }
@media screen and (max-width: 782px) {
    body.admin-bar .l-header { top: 46px; }
}

.l-header__nav-mobile {
    display: flex; flex-direction: column; gap: 2rem; text-align: center;
    font-size: 1.25rem; font-weight: 900; letter-spacing: 0.2em; text-transform: uppercase;
}
.c-nav-mobile-link { transition: color 0.3s; }
.c-nav-mobile-link:hover { color: var(--obi-secondary); }
.c-nav-mobile-link--accent { color: var(--obi-accent); }
.c-button--mobile { margin-top: 1rem; margin-left: 0; background: var(--obi-white); color: var(--obi-primary); padding: 1rem 2.5rem; font-size: 0.875rem; border-color: transparent; }

.l-header__mobile-footer { position: absolute; bottom: 2.5rem; font-size: 0.55rem; opacity: 0.3; letter-spacing: 0.5em; text-transform: uppercase; }

/* Footer */
.l-footer { padding: 4rem 1.5rem; border-top: 1px solid rgba(0,0,0,0.05); position: relative; z-index: 30; background: var(--obi-base); }
@media (min-width: 768px) { .l-footer { padding: 6rem 3rem; } }
.l-footer__inner { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 2.5rem; align-items: center; }
@media (min-width: 768px) { .l-footer__inner { flex-direction: row; justify-content: space-between; } }
.l-footer__logo-link { transition: transform 0.3s; }
.l-footer__logo-link:hover { transform: scale(1.05); }
.l-footer__logo { height: 32px; filter: grayscale(100%); }

.l-footer__list { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 3rem; font-size: 0.55rem; letter-spacing: 0.4em; text-transform: uppercase; font-weight: 900; list-style: none; opacity: 0.6; }
.l-footer__link { transition: opacity 0.3s; }
.l-footer__link:hover { opacity: 1; }
.l-footer__copy { font-size: 0.6rem; opacity: 0.5; font-weight: 900; }

/* Modals */
.c-modal-overlay {
    position: fixed; inset: 0; z-index: 10000; display: flex; align-items: center; justify-content: center; padding: 1rem;
    opacity: 0; visibility: hidden; pointer-events: none; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.c-modal-overlay.is-active { opacity: 1; visibility: visible; pointer-events: auto; }
.c-modal-overlay__bg { position: absolute; inset: 0; background: rgba(26, 35, 126, 0.95); backdrop-filter: blur(8px); }

.c-modal-content {
    position: absolute; width: 100%; max-width: 56rem; background: var(--obi-white); color: var(--obi-ink); max-height: 85vh;
    border-radius: 4px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); display: none; flex-direction: column; overflow: hidden;
    transform: translateY(40px); transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.c-modal-content.is-active { display: flex; }
.c-modal-content.is-ready { transform: translateY(0); }
.c-modal-content__header { padding: 1.5rem 2rem; border-bottom: 1px solid rgba(0,0,0,0.05); background: #FAFAFA; display: flex; justify-content: space-between; align-items: center; }
.c-modal-content__title { font-size: 1.25rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; }
.c-modal-content__title:focus { outline: none; text-decoration: underline; text-decoration-color: var(--obi-secondary); }
.c-modal-content__close { padding: 0.5rem; color: var(--obi-secondary); border-radius: 50%; transition: background 0.3s; }
.c-modal-content__close:hover { background: rgba(0,0,0,0.05); }

.c-modal-content__body { flex-grow: 1; overflow-y: auto; padding: 2rem 3rem; font-size: 0.875rem; line-height: 1.8; }
.c-modal-content__body h3 { font-size: 1.125rem; font-weight: 900; margin-bottom: 1rem; border-left: 4px solid var(--obi-secondary); padding-left: 1rem; }
.c-modal-content__body section { margin-bottom: 2rem; }
.c-modal-content__body ul, .c-modal-content__body ol { padding-left: 1.5rem; margin-bottom: 1.5rem; }

.c-modal-content__body table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; }
.c-modal-content__body th, .c-modal-content__body td { padding: 0.75rem; border: 1px solid rgba(0,0,0,0.1); text-align: left; }
.c-modal-content__body th { background: #FAFAFA; font-weight: 900; }

.c-modal-content__footer {
    padding: 1rem 1.5rem; text-align: center; font-size: 0.6rem; text-transform: uppercase;
    letter-spacing: 0.3em; color: var(--obi-white); font-weight: bold;
    background: linear-gradient(to bottom, var(--obi-primary) 0%, var(--obi-sunrise-mid) 40%, var(--obi-secondary) 75%, var(--obi-accent) 100%);
}

/* ==========================================================
   Page Templates
   ========================================================== */
.p-page-single { padding: 8rem 1.5rem 6rem; min-height: 100vh; background: var(--obi-base); }
@media(min-width:768px) { .p-page-single { padding: 12rem 4rem 10rem; } }
.p-page-single__inner { max-width: 800px; margin: 0 auto; }
.p-page-single__header { margin-bottom: 4rem; text-align: center; }
.p-page-single__title { font-size: 2.5rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; color: var(--obi-primary); }
.p-page-single__subtitle { font-size: 0.75rem; letter-spacing: 0.3em; opacity: 0.6; text-transform: uppercase; }
.p-page-single__line { width: 3rem; height: 2px; background: var(--obi-secondary); margin: 2rem auto 0; }
.p-page-single__content { font-size: 0.9375rem; line-height: 2; opacity: 0.9; text-align: justify; }

/* Contact Form */
.p-contact-intro { text-align: center; margin-bottom: 4rem; font-weight: 300; line-height: 2; }
.p-contact-x-link { color: var(--obi-secondary); font-weight: bold; text-decoration: underline; text-decoration-color: rgba(255,127,80,0.3); text-underline-offset: 4px; transition: opacity 0.3s; }
.p-contact-x-link:hover { opacity: 0.7; }
.p-contact-form { background: #fff; padding: 2.5rem 1.5rem; border-radius: 4px; box-shadow: 0 10px 30px rgba(0,0,0,0.03); }
@media(min-width:768px){ .p-contact-form { padding: 4rem; } }
.p-contact-form__row { margin-bottom: 2rem; }
.p-contact-form__label { display: block; font-size: 0.8125rem; font-weight: bold; margin-bottom: 0.75rem; color: var(--obi-primary); }
.p-contact-form__required { display: inline-block; background: var(--obi-secondary); color: #fff; font-size: 0.6rem; padding: 0.1rem 0.4rem; border-radius: 2px; margin-left: 0.5rem; vertical-align: middle; }
.p-contact-form__optional { display: inline-block; background: rgba(0,0,0,0.1); color: var(--obi-ink); font-size: 0.6rem; padding: 0.1rem 0.4rem; border-radius: 2px; margin-left: 0.5rem; vertical-align: middle; }
.p-contact-form__input, .p-contact-form__select, .p-contact-form__textarea { width: 100%; border: 1px solid rgba(0,0,0,0.1); background: var(--obi-base); padding: 1rem; font-size: 1rem; border-radius: 4px; transition: border-color 0.3s; font-family: inherit; color: var(--obi-ink); }
.p-contact-form__input:focus, .p-contact-form__select:focus, .p-contact-form__textarea:focus { outline: none; border-color: var(--obi-primary); }
.p-contact-form__submit-wrap { text-align: center; margin-top: 3rem; }
.c-button--solid { background: var(--obi-primary); color: var(--obi-white); border-color: var(--obi-primary); padding: 1rem 4rem; }
.c-button--solid:hover { background: var(--obi-secondary); border-color: var(--obi-secondary); color: var(--obi-white); }
.p-contact-alert { padding: 1.5rem; border-radius: 4px; margin-bottom: 2rem; font-weight: bold; text-align: center; }
.p-contact-alert--error { background: #fee2e2; color: #991b1b; }
.p-contact-alert--success { background: #ecfdf5; color: #065f46; }