/*
 * つばめ学習舎 共通CSS
 * 全ページで使用するスタイル
 */

/* ===== リセット・基本設定 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --brand: #232951;
    --accent: #E11D2F;
    --text: #000000;
    --bg-white: #ffffff;
    --bg-cream: #f5f5ef;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

.en-text {
    font-family: 'Hammersmith One', sans-serif;
}

/* ===== ヘッダー ===== */
header {
    background: var(--bg-white);
    padding: 12px 20px;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text);
    font-size: 16px;
    font-weight: bold;
}

.logo span {
    display: none;
}

.logo img {
    width: auto;
    height: clamp(36px, 8vw, 50px);
    margin-right: 8px;
    object-fit: contain;
    object-position: center;
}

.menu-toggle {
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--brand);
    border-radius: 2px;
    transition: 0.3s;
}

.desktop-nav {
    display: none;
}

/* ===== モバイルメニュー ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background: var(--brand);
    padding: 80px 0 40px;
    transition: right 0.3s ease;
    z-index: 999;
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.close-menu {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 40px;
    cursor: pointer;
    line-height: 1;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu nav ul {
    list-style: none;
}

.mobile-menu nav > ul > li {
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.mobile-menu nav a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 18px 30px;
    font-size: 16px;
}

.mobile-menu .has-submenu > a {
    position: relative;
    padding-right: 50px;
}

.mobile-menu .has-submenu > a::after {
    content: '▼';
    position: absolute;
    right: 30px;
    font-size: 12px;
    transition: transform 0.3s;
}

.mobile-menu .has-submenu.open > a::after {
    transform: rotate(180deg);
}

.mobile-menu .submenu {
    background: #536980;
    border-left: 20px solid var(--brand);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-menu .submenu.open {
    max-height: 500px;
}

.mobile-menu .submenu li {
    border-bottom: none;
}

.mobile-menu .submenu a {
    padding: 14px 30px 14px 50px;
    font-size: 14px;
}

/* サブメニュー：プログラム一覧を親項目として強調 */
.mobile-menu .submenu li:first-child {
    background: #536980;
}

.mobile-menu .submenu li:first-child a {
    font-weight: bold;
    padding-left: 30px;
}

/* サブメニュー：子項目 */
.mobile-menu .submenu li:not(:first-child) {
    background: #536980;
}

.mobile-menu .submenu li:not(:first-child) a {
    background: #f7fafa;
    margin-left: 20px;
    padding-left: 25px;
    color: var(--text);
    border-bottom: 1px solid #ccc;
    display: block;
}

/* コーチング（2番目）のaタグに左上角丸 */
.mobile-menu .submenu li:nth-child(2) a {
    border-top-left-radius: 12px;
}

/* 最後の子項目は下線なし */
.mobile-menu .submenu li:last-child a {
    border-bottom: none;
}

.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 998;
}

.menu-overlay.active {
    display: block;
}

/* ===== セクション共通 ===== */
section {
    padding: 60px 30px;
}

.bg-white {
    background: var(--bg-white);
}

.bg-cream {
    background: var(--bg-cream);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-family: 'Hammersmith One', sans-serif;
    font-size: 28px;
    color: var(--brand);
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.section-subtitle {
    font-size: 13px;
    color: #666;
}

/* ===== ページヒーローセクション（共通） ===== */
.page-hero {
    background: var(--brand);
    color: white;
    text-align: center;
    padding: 80px 20px 50px;
    margin-top: 52px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 180px;
}

.page-hero .section-title {
    color: white;
    font-size: 32px;
    margin-bottom: 8px;
}

.page-hero .section-subtitle {
    color: white;
    font-size: 15px;
}

/* ===== 日本語Heroタイトル用 ===== */
.section-title-jp,
.hero-title-jp,
.page-hero .hero-title-jp {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 700;
    font-size: clamp(24px, 8vw, 32px);
    letter-spacing: 0;
}

/* ===== イントロセクション（冒頭セクション共通） ===== */
.intro-section {
    background: var(--bg-white);
    padding: 60px 20px 0;
}

.intro-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.intro-heading {
    font-size: 20px;
    font-weight: bold;
    color: var(--brand);
    text-align: center;
    margin-bottom: 28px;
    /* 下線なし - 他セクションと差別化 */
}

.intro-text {
    font-size: 15px;
    line-height: 2;
    color: #333;
    text-align: center;
    margin-bottom: 20px;
}

.intro-image-wrapper {
    position: relative;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-top: 30px;
    overflow: hidden;
    aspect-ratio: 5 / 2;
}

.intro-image-wrapper::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(to bottom, 
        rgba(255, 255, 255, 1) 0%, 
        rgba(255, 255, 255, 1) 10%,
        rgba(255, 255, 255, 0) 100%
    );
    z-index: 1;
    pointer-events: none;
}

.intro-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* ===== セクション見出し（h2相当） ===== */
.section-heading {
    font-size: 20px;
    font-weight: bold;
    color: var(--brand);
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--brand);
}

/* ===== 共通ボタン ===== */
.detail-button {
    display: inline-flex;
    align-items: center;
    background: var(--brand);
    color: white;
    padding: clamp(8px, 1.5vw, 11px) clamp(16px, 3vw, 24px);
    text-decoration: none;
    border-radius: 6px;
    font-size: clamp(12px, 1.8vw, 13px);
    transition: background 0.3s;
    white-space: nowrap;
}

.detail-button:after {
    content: "▷";
    margin-left: 6px;
    font-size: 11px;
}

.detail-button:hover {
    background: #1a1f3a;
}

/* ===== フッター ===== */
footer {
    background: var(--brand);
    color: white;
    padding: 50px 30px 30px;
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.footer-info {
    margin-bottom: 30px;
    line-height: 2;
    font-size: 14px;
    text-align: left;
}

.footer-info strong {
    font-size: 15px;
}

.footer-nav {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.footer-nav ul {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-items: start;
    gap: 12px 24px;
    max-width: 320px;
    margin: 0 auto;
}

.footer-nav li::before {
    content: "●";
    margin-right: 8px;
    font-size: 8px;
    vertical-align: middle;
    opacity: 0.7;
}

.footer-nav a {
    color: white;
    text-decoration: none;
    font-size: 13px;
    opacity: 0.9;
}

.footer-nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* タブレット以上：横一列、●なし、縦線あり */
@media (min-width: 768px) {
    .footer-nav ul {
        display: flex;
        justify-content: center;
        gap: 8px 32px;
        max-width: none;
    }

    .footer-nav li::before {
        content: none;
    }
    
    .footer-nav li:not(:last-child)::after {
        content: "|";
        margin-left: 32px;
        opacity: 0.5;
    }
}

.copyright {
    padding-top: 20px;
    padding-bottom: 80px;
    opacity: 0.8;
    font-size: 12px;
}

/* ===== フローティングCTA ===== */
.floating-cta {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    width: calc(100% - 40px);
    max-width: 500px;
}

.floating-cta a {
    display: block;
    background: var(--accent);
    color: white;
    padding: 16px;
    text-align: center;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 14px;
    box-shadow: 0 4px 16px rgba(225, 29, 47, 0.4);
}

/* ===== CTAセクション（フッター直前） ===== */
.cta-section {
    display: none;
}

.cta-button-large {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 16px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(225, 29, 47, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(225, 29, 47, 0.4);
}

/* ===== タブレット用スタイル（768px〜） ===== */
@media (min-width: 768px) {
    .page-hero {
        padding: 80px 20px 60px;
        min-height: 200px;
    }

    .page-hero .section-title {
        font-size: 36px;
    }

    .page-hero .section-subtitle {
        font-size: 16px;
    }

    /* 日本語Heroタイトル用 */
    .section-title-jp,
    .hero-title-jp {
        font-size: 28px;
    }

    /* イントロセクション 2カラムレイアウト */
    .intro-section {
        padding: 0;
        overflow: hidden;
    }

    .intro-layout {
        display: flex;
        align-items: stretch;
        max-width: 100%;
    }

    .intro-text-column {
        flex: 0 0 50%;
        padding: 50px 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .intro-container {
        max-width: none;
        margin: 0;
        text-align: left;
    }

    .intro-heading {
        text-align: left;
        font-size: 22px;
    }

    .intro-text {
        text-align: left;
        font-size: 16px;
    }

    .intro-text br {
        display: none;
    }

    .intro-image-column {
        flex: 0 0 50%;
        position: relative;
        min-height: 350px;
    }

    .intro-image-wrapper {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: auto;
        margin-left: 0;
        margin-top: 0;
        aspect-ratio: auto;
    }

    .intro-image-wrapper::before {
        top: 0;
        bottom: 0;
        left: 0;
        right: auto;
        width: 100px;
        height: 100%;
        background: linear-gradient(to right, 
            rgba(255, 255, 255, 1) 0%, 
            rgba(255, 255, 255, 0) 100%
        );
    }

    /* セクション見出し */
    .section-heading {
        font-size: 22px;
    }
}

/* ===== デスクトップ用スタイル（1024px〜） ===== */
@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }

    .desktop-nav {
        display: block;
    }

    .desktop-nav ul {
        display: flex;
        list-style: none;
        gap: 28px;
        align-items: center;
    }

    .desktop-nav a {
        text-decoration: none;
        color: var(--brand);
        font-size: 14px;
        font-weight: 500;
        transition: color 0.3s;
    }

    .desktop-nav a:hover {
        color: var(--accent);
    }

    .desktop-cta {
        background: var(--accent);
        color: white !important;
        padding: 10px 20px;
        border-radius: 20px;
        font-size: 13px;
    }

    .desktop-cta:hover {
        color: white !important;
        opacity: 0.9;
    }

    /* デスクトップナビ ドロップダウン */
    .desktop-nav .has-dropdown {
        position: relative;
    }

    .desktop-nav .dropdown {
        position: absolute;
        top: 100%;
        left: 50%;
        transform: translateX(-50%) translateY(10px);
        background: white;
        min-width: 220px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        border-radius: 8px;
        padding: 8px 0;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1001;
        display: block;
    }

    .desktop-nav .has-dropdown:hover .dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }

    .desktop-nav .dropdown li {
        list-style: none;
    }

    .desktop-nav .dropdown a {
        display: block;
        padding: 12px 20px;
        white-space: nowrap;
        font-size: 13px;
    }

    .desktop-nav .dropdown a:hover {
        background: var(--bg-cream);
    }

    /* ドロップダウン：プログラム一覧を親項目として強調 */
    .desktop-nav .dropdown li:first-child {
        border-bottom: 1px solid #eee;
        margin-bottom: 4px;
        background: var(--bg-cream);
    }

    .desktop-nav .dropdown li:first-child a {
        font-weight: bold;
    }

    /* ドロップダウン：子項目をインデント */
    .desktop-nav .dropdown li:not(:first-child) a {
        padding-left: 32px;
    }

    .mobile-menu {
        display: none !important;
    }

    section {
        padding: 80px 20px;
    }

    .floating-cta {
        display: none;
    }

    /* イントロセクション PC版 */
    .intro-text-column {
        padding: 60px 60px;
    }

    .intro-image-column {
        min-height: 400px;
    }

    .intro-image-wrapper::before {
        width: 120px;
    }

    /* CTAセクション PC版：表示 */
    .cta-section {
        display: block;
        padding: 50px 20px;
        text-align: center;
    }
}

/* ===== 大画面用スタイル（1200px〜） ===== */
@media (min-width: 1200px) {
    .page-hero {
        padding: 90px 20px 70px;
        min-height: 220px;
    }

    .page-hero .section-title {
        font-size: 40px;
    }

    .page-hero .section-subtitle {
        font-size: 17px;
    }

    /* 日本語Heroタイトル用 */
    .section-title-jp,
    .hero-title-jp {
        font-size: 32px;
    }

    /* セクション見出し */
    .section-heading {
        font-size: 24px;
    }
}