@import url('variables.css');

/* Base Styles */
body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    letter-spacing: 0.05em;
    font-feature-settings: "palt";
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.4;
}

.en {
    font-family: var(--font-number);
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--spacing-section-sp) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-section) 0;
    }
}

.section-bg {
    background-color: var(--color-section-bg);
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.d-flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.align-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-md {
    gap: var(--spacing-md);
}

.hidden-pc {
    display: block;
}

.hidden-sp {
    display: none;
}

@media (min-width: 768px) {
    .hidden-pc {
        display: none;
    }

    .hidden-sp {
        display: block;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition-base);
    cursor: pointer;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-base);
    min-height: 48px;
    /* Touch friendly */
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    opacity: 0.9;
}

.btn-primary {
    background-color: var(--color-main);
    color: var(--color-white);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-main);
    color: var(--color-main);
}

.btn-outline:hover {
    background-color: var(--color-main);
    color: var(--color-white);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

/* Section Heading */
.section-heading {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.75rem;
    color: var(--color-main);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
    margin: 12px auto 0;
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: 0.9rem;
    color: var(--color-sub-text);
    font-family: var(--font-number);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }

    .section-heading {
        margin-bottom: var(--spacing-xxl);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    background-color: rgba(250, 249, 246, 0.95);
    backdrop-filter: blur(5px);
    transition: var(--transition-base);
    box-shadow: var(--shadow-base);
    padding: 10px 0;
}

.header-inner {
    display: flex;
    justify-content: center;
    /* Center Logo on Mobile */
    align-items: center;
    height: 60px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-main);
}

.logo img {
    height: 32px;
    width: auto;
}

.nav-pc {
    display: none;
}

@media (min-width: 1024px) {
    .header {
        padding: 15px 0;
    }

    .header-inner {
        height: 70px;
        justify-content: space-between;
        /* Restore Desktop Layout */
    }

    .logo {
        font-size: 1.5rem;
    }

    .nav-pc {
        display: flex;
        align-items: center;
        gap: 30px;
    }

    .nav-list {
        display: flex;
        align-items: center;
        gap: 24px;
    }

    .nav-item a {
        font-size: 1rem;
        font-weight: 500;
        color: var(--color-text);
        position: relative;
    }

    .nav-item a::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--color-main);
        transition: width 0.3s;
    }

    .nav-item a:hover::after {
        width: 100%;
    }
}

/* Hamburger Menu */
.hamburger {
    display: block;
    cursor: pointer;
    z-index: calc(var(--z-header) + 10);
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 24px;
}

.hamburger span {
    display: block;
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--color-main);
    border-radius: 2px;
    transition: var(--transition-base);
}

.hamburger span:nth-child(1) {
    top: 0;
}

.hamburger span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger span:nth-child(3) {
    bottom: 0;
}

.hamburger.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

@media (min-width: 1024px) {
    .hamburger {
        display: none;
    }
}

.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: auto;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    background-color: var(--color-bg);
    z-index: calc(var(--z-header) - 1);
    padding: 40px 20px;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.mobile-nav-item a {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

/* Footer */
.footer {
    background-color: var(--color-main);
    color: var(--color-white);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: block;
}

.footer-desc {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.95rem;
    opacity: 0.9;
}

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

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-tel {
    font-family: var(--font-number);
    font-size: 1.25rem;
    font-weight: 700;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 10px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-base);
}

.social-icon:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    opacity: 0.7;
    font-family: var(--font-number);
}

/* Floating Buttons */
.floating-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--z-floating);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-floating);
    transition: var(--transition-base);
    color: #fff;
}

.floating-btn:hover {
    transform: scale(1.05);
}

.btn-line {
    background-color: #06C755;
}

.btn-tel {
    background-color: var(--color-accent);
}

.btn-top {
    background-color: var(--color-bg);
    color: var(--color-main);
    border: 1px solid var(--color-border);
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

.btn-top.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* Icons (using dummy implementation for now, replaced with SVG later) */
.icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}