/* 
 * Nakamura Sealing Premium Theme
 * Inspired by modern, sleek, and premium web designs.
 */

:root {
    /* Colors - Modern Deep Blue & Brilliant Accent */
    --color-primary: #1d4ed8;
    /* Deep Blue */
    --color-primary-dark: #1e3a8a;
    --color-accent: #3b82f6;
    /* Bright Blue Accent */
    --color-secondary: #0f172a;
    /* Dark Slate */

    --color-bg: #ffffff;
    --color-bg-light: #f8fafc;
    --color-bg-alt: #eff6ff;
    /* Very Light Blue */

    --color-text: #334155;
    /* Slate 700 */
    --color-heading: #0f172a;
    /* Slate 900 */
    --color-text-mutated: #64748b;

    --color-white: #ffffff;
    --color-border: #e2e8f0;

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
    --font-size-base: 16px;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-text: linear-gradient(135deg, #1e3a8a, #3b82f6);
    --gradient-dark: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.9) 100%);

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 8rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Border Radius */
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

/* =========================================
   Reset & Base Styles
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-heading);
    font-weight: 700;
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* =========================================
   Loading Screen
   ========================================= */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #fbfbfb;
    /* Matched to the off-white background of the logo JPG */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-logo {
    max-width: 300px;
    margin-bottom: 2rem;
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.8;
    }

    50% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(0.95);
        opacity: 0.8;
    }
}

/* =========================================
   Layout & Utilities
   ========================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-2xl) 0;
}

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

.center {
    text-align: center;
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-label {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: inline-block;
    position: relative;
}

.section-label::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.center .section-label::after {
    left: 50%;
    transform: translateX(-50%);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    font-weight: 900;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: 0 4px 14px 0 rgba(29, 78, 216, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.23);
    color: var(--color-white);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-heading);
}

/* =========================================
   Header (Glassmorphism)
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
    background: rgba(255, 255, 255, 0.95);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--color-primary-dark);
}

.nav-list {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-heading);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-btn {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.3);
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background-color: var(--color-secondary);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    color: var(--color-white);
}

.hero-subtitle {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    display: block;
    /* Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s forwards;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.2;
    font-weight: 900;
    margin-bottom: 2rem;
    color: var(--color-white);
    /* Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 0.2s forwards;
}

.hero-title .text-gradient {
    background: linear-gradient(135deg, #60a5fa, #bfdbfe);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-features {
    margin-bottom: 2.5rem;
    font-size: 1.125rem;
    font-weight: 500;
    /* Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 0.4s forwards;
}

.hero-features li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #60a5fa;
    font-weight: bold;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    /* Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 0.6s forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
   Vision Section
   ========================================= */
.vision {
    background-color: var(--color-white);
    position: relative;
}

.vision-container {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    max-width: 800px;
}

.vision-quote {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    line-height: 1.5;
    color: var(--color-primary-dark);
    margin-bottom: 2rem;
    font-weight: 700;
}

.vision-desc {
    font-size: 1.125rem;
    color: var(--color-text-mutated);
}

/* =========================================
   Services Section
   ========================================= */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--color-white);
    padding: 3rem 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(59, 130, 246, 0.3);
}

.service-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-bg-alt);
    position: absolute;
    top: -10px;
    right: -10px;
    line-height: 1;
    z-index: -1;
    transition: color var(--transition-normal);
}

.service-card:hover .service-number {
    color: rgba(59, 130, 246, 0.1);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-heading);
}

.service-desc {
    color: var(--color-text-mutated);
    font-size: 0.95rem;
}

/* =========================================
   Motorcycle Parts Section
   ========================================= */
.parts {
    background-color: var(--color-secondary);
    color: var(--color-white);
    position: relative;
    background-image: linear-gradient(to right, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.7)), url('https://images.unsplash.com/photo-1558981806-ec527fa84c39?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.parts .section-label {
    color: #94a3b8;
}

.parts .section-title {
    color: var(--color-white);
}

.parts-content {
    max-width: 600px;
}

.parts-desc {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

/* =========================================
   Contact Section
   ========================================= */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-lead {
    font-size: 1.125rem;
    color: var(--color-text-mutated);
}

.contact-info-card {
    background: var(--gradient-primary);
    padding: 3rem;
    border-radius: var(--radius-xl);
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.company-name {
    color: var(--color-white);
    font-size: 1.75rem;
    margin-bottom: 2rem;
}

.contact-list li {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-icon {
    font-size: 1.5rem;
    margin-right: 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.contact-label {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
}

.contact-value:hover {
    text-decoration: underline;
}

/* =========================================
   Footer
   ========================================= */
.footer {
    background-color: var(--color-heading);
    color: rgba(255, 255, 255, 0.6);
    padding: 2rem 0;
    text-align: center;
    font-size: 0.875rem;
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 900px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        /* simple mobile hide for now, could add hamburger */
    }

    .hero-title {
        font-size: 2.25rem;
    }

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

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

    .section-title {
        font-size: 2rem;
    }
}

/* =========================================
   Mobile Menu
========================================= */

.menu-toggle{
display:none;
font-size:28px;
background:none;
border:none;
cursor:pointer;
}

/* =========================================
   Mobile Responsive
========================================= */

@media (max-width:768px){

.header-container{
height:70px;
}

/* メニュー */

.menu-toggle{
display:block;
}

.nav-list{
position:absolute;
top:70px;
left:0;
width:100%;
background:white;
flex-direction:column;
padding:2rem;
gap:1.5rem;
box-shadow:0 10px 20px rgba(0,0,0,0.1);
display:none;
}

.nav-list.active{
display:flex;
}

/* hero */

.hero{
min-height:80vh;
}

.hero-title{
font-size:2rem;
line-height:1.3;
}

.hero-features{
font-size:1rem;
}

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

/* sections */

.section{
padding:4rem 0;
}

.section-title{
font-size:1.8rem;
}

/* services */

.service-grid{
grid-template-columns:1fr;
}

/* contact */

.contact-container{
grid-template-columns:1fr;
}

.contact-info-card{
padding:2rem;
}

}

/* スマホ お問い合わせ中央揃え */

@media (max-width:768px){

.contact-container{
display:flex;
flex-direction:column;
align-items:center;
}

.contact-header{
width:100%;
text-align:center;
}

.contact-info-card{
width:100%;
max-width:420px;
margin:30px auto 0 auto;
}

}

@media (max-width:768px){

.contact-lead{
padding:0 20px;
line-height:1.8;
}

}

.contact-value{
word-break: break-all;
overflow-wrap: break-word;
}

.contact-details{
min-width:0;
}

.contact-value{
word-break: break-all;
overflow-wrap: break-word;
font-size:0.95rem;
}

/* ===== お問い合わせセクション改善（プロ仕様） ===== */

.contact-container{
display:grid;
grid-template-columns:1fr 1fr;
gap:40px;
align-items:center;
}

.contact-header{
max-width:500px;
}

.contact-info-card{
background:#ffffff;
padding:35px;
border-radius:12px;
box-shadow:0 10px 30px rgba(0,0,0,0.08);
max-width:480px;
width:100%;
}

.company-name{
font-size:1.4rem;
margin-bottom:20px;
font-weight:600;
}

.contact-list{
list-style:none;
padding:0;
margin:0;
}

.contact-list li{
display:flex;
align-items:flex-start;
gap:15px;
padding:12px 0;
border-bottom:1px solid #eee;
}

.contact-list li:last-child{
border-bottom:none;
}

.contact-icon{
font-size:22px;
margin-top:4px;
}

.contact-details{
min-width:0;
}

.contact-label{
display:block;
font-size:0.85rem;
color:#777;
margin-bottom:4px;
}

.contact-value{
font-size:1rem;
color:#111;
text-decoration:none;
word-break:break-all;
overflow-wrap:break-word;
}

.contact-value:hover{
text-decoration:underline;
}


/* ===== スマホ最適化 ===== */

@media (max-width:768px){

.contact-container{
grid-template-columns:1fr;
gap:30px;
}

.contact-header{
text-align:center;
margin:0 auto;
}

.contact-info-card{
margin:0 auto;
padding:28px;
}

.contact-list li{
align-items:center;
}

.contact-icon{
font-size:20px;
}

.contact-value{
font-size:0.95rem;
}

}