@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@200;300;400;500;600;700;800&display=swap');

:root {
    --primary-orange: #E49674;
    --primary-orange-light: #EBA788;
    --primary-orange-dark: #D18560;
    --text-black: #000000;
    --text-gray: #666666;
    --bg-white: #ffffff;
    --bg-light: #f9f9f9;
    --border-light: #e5e5e5;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-black);
    background: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.6);
    border-bottom: none;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: transform 0.5s ease;
}

header.hidden {
    transform: translateY(-100%);
}

.header-content {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 4px 0;
}

.logo {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 26px;
    font-weight: 300;
    color: rgba(0, 0, 0, 0.8);
    text-decoration: none;
    letter-spacing: 3px;
}

/* Instagram Icon */
.instagram-icon {
    position: fixed;
    top: 8px;
    right: 70px;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 7px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.instagram-icon:hover {
    background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
    color: white;
}

.instagram-icon svg {
    width: 20px;
    height: 20px;
}

/* ハンバーガーメニュー */
.menu-toggle {
    position: fixed;
    top: 8px;
    right: 20px;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: center;
    cursor: pointer;
    width: 34px;
    height: 34px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 7px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.menu-toggle span {
    width: 18px;
    height: 3px;
    background: rgba(255, 255, 255, 0.9);
    margin: 2px auto;
    transition: 0.3s;
}

.menu-toggle span:nth-child(2) {
    height: 3px;
}

.menu-toggle span:nth-child(3) {
    height: 3px;
}

/* Navigation */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1998;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    transition: right 0.3s ease;
    z-index: 1999;
    padding: 60px 30px 30px;
}

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

.nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 48px;
    cursor: pointer;
    color: var(--text-black);
    transform: scaleX(1.1);
}

.nav-links {
    list-style: none;
    margin-top: 40px;
}

.nav-links li {
    border-bottom: none;
    position: relative;
}

.nav-links li::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #000000;
}

.nav-links li:first-child::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #000000;
}

.nav-links a {
    display: block;
    padding: 12px 0 12px 15px;
    color: var(--text-black);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    color: rgba(0, 0, 0, 0.7);
}

.nav-links a.active {
    color: var(--primary-orange);
    font-weight: 600;
}

/* Main Content */
main {
    margin-top: 0;
}

/* Page Header */
.page-header {
    background: var(--bg-light);
    padding: 60px 0 40px;
    text-align: center;
}

.page-title {
    font-size: clamp(36px, 6vw, 48px);
    font-weight: 300;
    margin-bottom: 0;
    letter-spacing: -1px;
    padding-bottom: 20px;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Footer */
footer {
    background: var(--text-black);
    color: var(--bg-white);
    text-align: center;
    padding: 40px 0;
}

footer p {
    font-size: 14px;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .page-header {
        padding: 60px 0 40px;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}