@charset "utf-8";

/* ========================================================================== 
   header.css - Petit Maison KIRISHIMA "Serenity" Edition
   - 2026 Optimized: Refined Kinetic Animations
   - Fix: Unified Font Size & Synchronized Animations for Contact Button
   - Fix: Perfectly Aligned 3-Line Hamburger Menu
   - Update: Added .logo-type for Weekly Mansion identification
   ========================================================================== */

/* --- 0. レスポンシブ表示制御 --- */
.sp-only { display: none !important; }
.menu-btn { display: none !important; } 

@media (max-width: 1024px) {
    .pc-only { display: none !important; }
    .sp-only { display: block !important; }
    .pc-nav { display: none !important; }
    .menu-btn { display: flex !important; } 
}

/* --- 1. 全体設定 --- */
.site-header {
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10000;
    border-bottom: 1px solid rgba(26, 61, 50, 0.08);
    height: 100px;
    transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    font-family: var(--font-jp);
}

.site-header.is-scrolled { 
    height: 80px; /* 3段ロゴに合わせて少し余裕を持たせて調整 */
    background: rgba(255, 255, 255, 0.98); 
    box-shadow: 0 5px 20px rgba(26, 61, 50, 0.05);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

/* --- 2. ロゴエリア (3段構成対応) --- */
.logo { z-index: 10001; position: relative; }
.logo a { display: flex; flex-direction: column; text-decoration: none; }

.logo-sub {
    font-family: var(--font-en);
    font-size: 10px;
    color: var(--color-accent);
    letter-spacing: 0.35em;
    text-transform: uppercase;
    margin-bottom: 2px;
    font-weight: 300;
    line-height: 1.2;
}

.logo-type {
    font-family: var(--font-jp);
    font-size: 11px;
    color: var(--color-primary);
    letter-spacing: 0.15em;
    font-weight: 500;
    margin-bottom: 2px;
    line-height: 1.2;
}

.logo-main {
    font-family: var(--font-jp);
    font-size: clamp(18px, 1.6vw, 22px);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    line-height: 1.2;
}

/* --- 3. PCナビゲーション --- */
.pc-nav ul { display: flex; list-style: none; gap: clamp(20px, 2.5vw, 35px); margin: 0; padding: 0; }
.pc-nav a {
    color: var(--color-text-main);
    text-decoration: none;
    font-family: var(--font-jp);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.05em;
    position: relative;
    padding: 10px 0;
    transition: 0.4s;
}
.pc-nav a::after {
    content: "";
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 1px;
    background: var(--color-accent);
    transition: 0.4s;
}
.pc-nav a:hover { color: var(--color-accent); }
.pc-nav a:hover::after { width: 100%; }

/* --- 4. ヘッダーコントロール --- */
.header-controls { display: flex; align-items: center; gap: 20px; }
.btn-contact {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-text-light) !important;
    text-decoration: none;
    padding: 12px 24px;
    font-family: var(--font-jp);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.15em;
    border-radius: 2px;
    border: 1px solid var(--color-primary);
    transition: all 0.4s ease;
    text-align: center;
}

.btn-contact:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

/* --- 5. スマホ用展開メニュー --- */
.sp-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100dvh;
    background: var(--color-bg-base);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.6s ease,
                visibility 0.6s;
}

.sp-nav::before {
    content: "Petit Maison";
    position: absolute;
    bottom: 5%;
    right: -5%;
    font-family: var(--font-en);
    font-size: 18vw;
    color: rgba(26, 61, 50, 0.03);
    z-index: -1;
    white-space: nowrap;
    pointer-events: none;
}

.sp-nav.is-open {
    opacity: 1;
    transform: translateX(0);
    visibility: visible;
}

.sp-nav-inner {
    width: 100%;
    padding: 20px;
    text-align: center;
}

.sp-nav ul { list-style: none; padding: 0; margin: 0; }
.sp-nav li {
    margin: 4vh 0;
    opacity: 0;
    transform: translateY(40px) scale(0.95);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), 
                transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.sp-nav.is-open li { opacity: 1; transform: translateY(0) scale(1); }
.sp-nav.is-open li:nth-child(1) { transition-delay: 0.15s; }
.sp-nav.is-open li:nth-child(2) { transition-delay: 0.22s; }
.sp-nav.is-open li:nth-child(3) { transition-delay: 0.29s; }
.sp-nav.is-open li:nth-child(4) { transition-delay: 0.36s; }
.sp-nav.is-open li:nth-child(5) { transition-delay: 0.43s; }
.sp-nav.is-open li:nth-child(6) { transition-delay: 0.50s; }

.sp-nav a {
    font-family: var(--font-jp);
    font-size: 22px;
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: 0.15em;
    display: inline-block;
    position: relative;
    padding: 5px 0;
}

.sp-nav .btn-contact {
    background: var(--color-primary);
    color: var(--color-text-light) !important;
    padding: 15px 40px;
    font-size: 20px;
    letter-spacing: 0.1em;
    border-radius: 2px;
    box-shadow: 0 10px 25px rgba(26, 61, 50, 0.1);
    margin-top: 10px;
    width: auto;
    min-width: 240px;
    border: none;
}

.sp-nav a::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 1px;
    background: var(--color-accent);
    opacity: 0.5;
}

/* --- 6. ハンバーガーボタン --- */
.menu-btn {
    width: 48px;
    height: 48px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 10005;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.menu-btn-box {
    position: relative;
    width: 26px;
    height: 16px;
    display: block;
}

.menu-btn-box span {
    display: block;
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    left: 0;
    border-radius: 2px;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-btn-box span:nth-child(1) { top: 0; }
.menu-btn-box span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-btn-box span:nth-child(3) { bottom: 0; }

.is-open .menu-btn-box span,
.is-menu-open .menu-btn-box span { background: var(--color-accent); }

.is-open .menu-btn-box span:nth-child(1),
.is-menu-open .menu-btn-box span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.is-open .menu-btn-box span:nth-child(2),
.is-menu-open .menu-btn-box span:nth-child(2) {
    opacity: 0;
    transform: translateY(-50%) scaleX(0);
}

.is-open .menu-btn-box span:nth-child(3),
.is-menu-open .menu-btn-box span:nth-child(3) {
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* --- 7. スクロールロック & レスポンシブ微調整 --- */
body.is-menu-open {
    overflow: hidden !important;
    position: fixed;
    width: 100%;
}

@media (max-width: 1024px) {
    .site-header { height: 80px; }
    .header-inner { padding: 0 25px; }
    .logo-main { font-size: 18px; }
    .logo-sub { font-size: 9px; }
    .logo-type { font-size: 10px; }
}