/* ===================================
   CSS Variables & Reset
   =================================== */

:root {
    /* Colors - Elegant & Feminine Palette */
    --color-primary: #C9A875;        /* Elegant Gold */
    --color-secondary: #F5EFE7;      /* Warm Beige */
    --color-accent: #D4AF77;         /* Light Gold */
    --color-dark: #2C2C2C;           /* Soft Black */
    --color-text: #4A4A4A;           /* Warm Gray */
    --color-text-light: #8B8B8B;     /* Light Gray */
    --color-white: #FFFFFF;
    --color-bg: #FAF8F5;             /* Off White */
    --color-border: #E8DCC8;         /* Light Gold Border */
    
    /* Fonts */
    --font-heading: 'Playfair Display', 'Cormorant Garamond', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Transitions */
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 12px rgba(201, 168, 117, 0.08);
    --shadow-md: 0 4px 24px rgba(201, 168, 117, 0.12);
    --shadow-lg: 0 8px 40px rgba(201, 168, 117, 0.16);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    letter-spacing: 0.05em;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-dark);
    letter-spacing: 0.05em;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.4rem; }

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

ul {
    list-style: none;
}

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

/* ===================================
   Utilities
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.divider {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    margin: var(--spacing-md) 0;
}

/* ===================================
   Header / Navigation
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(232, 220, 200, 0.3);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
}

.nav-logo .logo-text {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-dark);
    letter-spacing: 0.15em;
}

.nav-menu {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text);
    letter-spacing: 0.1em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-dark);
    transition: var(--transition);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 80px;
    background: linear-gradient(135deg, #FAF8F5 0%, #F5EFE7 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(201, 168, 117, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 175, 119, 0.05) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: var(--spacing-xl) var(--spacing-md);
    animation: fadeIn 1.2s ease;
}

.hero-subtitle {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: 4rem;
    font-weight: 500;
    line-height: 1.3;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

.hero-description {
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 2;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.btn-hero {
    display: inline-block;
    padding: 1rem 3rem;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-white);
    background-color: var(--color-primary);
    border: 1px solid var(--color-primary);
    transition: var(--transition);
}

.btn-hero:hover {
    background-color: transparent;
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.scroll-down {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--color-primary);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(180deg, var(--color-primary) 0%, transparent 100%);
    animation: scrollAnimation 2s infinite;
}

@keyframes scrollAnimation {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(20px); opacity: 0.3; }
}

/* ===================================
   Concept Section
   =================================== */

.concept {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-white);
}

.concept-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.concept-image {
    width: 100%;
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-border) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.concept-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.concept-image .image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.concept-image .image-placeholder i {
    font-size: 6rem;
    color: var(--color-primary);
    opacity: 0.5;
}

.concept-text {
    padding: var(--spacing-md);
}

.concept-description {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--color-text);
}

/* ===================================
   MERERE Brand Section
   =================================== */

.merere-brand {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-bg) 100%);
}

.brand-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-sm);
}

.brand-tagline {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--color-text);
    letter-spacing: 0.1em;
}

.brand-content {
    max-width: 800px;
    margin: 0 auto;
}

.brand-text-content {
    padding: 0 var(--spacing-md);
}

.brand-philosophy,
.brand-vision {
    margin-bottom: var(--spacing-lg);
}

.brand-description {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.brand-description.emphasis {
    font-size: 1rem;
    font-weight: 400;
    line-height: 2;
    color: var(--color-text);
    margin-top: var(--spacing-lg);
}

.brand-description strong {
    color: var(--color-primary);
    font-weight: 600;
}

.brand-divider {
    width: 60px;
    height: 1px;
    background: var(--color-primary);
    margin: var(--spacing-lg) 0;
}

/* ===================================
   About Section
   =================================== */

.about {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-bg);
}

.about-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.about-header .divider {
    margin-left: auto;
    margin-right: auto;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-image {
    position: sticky;
    top: 120px;
}

.profile-image {
    width: 100%;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--color-border) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 8px solid var(--color-white);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.profile-image i {
    font-size: 8rem;
    color: var(--color-primary);
    opacity: 0.3;
}
    color: var(--color-primary);
    opacity: 0.3;
}

.about-text {
    padding: var(--spacing-md) 0;
}

.about-name {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.about-role {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.about-description {
    margin-bottom: var(--spacing-lg);
}

.about-description p {
    margin-bottom: var(--spacing-md);
    line-height: 2;
    color: var(--color-text);
}

.about-credentials {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.credential-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-text);
}

.credential-item i {
    color: var(--color-primary);
    font-size: 1rem;
}

/* ===================================
   Services Section
   =================================== */

.services {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-white);
    position: relative;
}

.services-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, var(--color-secondary) 100%);
    opacity: 0.3;
    z-index: 0;
}

.services-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.services-header .divider {
    margin-left: auto;
    margin-right: auto;
}

.services-lead {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.service-category {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.category-title {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--color-primary);
    text-align: center;
    padding-bottom: 0.3rem;
    letter-spacing: 0.15em;
    margin-bottom: 0.3rem;
}

.service-brand-name {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--color-dark);
    text-align: center;
    margin-top: 0;
    margin-bottom: 0.3rem;
    letter-spacing: 0.08em;
}

.service-subtitle {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.05em;
}

.service-catchcopy {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    font-style: italic;
    letter-spacing: 0.05em;
}

.service-overview {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-left: 3px solid var(--color-primary);
}

.service-overview p {
    font-size: 0.9rem;
    line-height: 1.9;
    color: var(--color-text);
    margin: 0;
    text-align: left;
}

.service-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.service-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.service-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 300;
    color: var(--color-border);
    line-height: 1;
    flex-shrink: 0;
}

.service-content {
    flex: 1;
}

.service-name {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.service-desc {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.service-detail-list {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-left: 2px solid var(--color-primary);
}

.service-detail-list h5 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.service-detail-list ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--spacing-md);
}

.service-detail-list ul li {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-text);
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.service-detail-list ul li::before {
    content: '・';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.service-detail-note {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-text);
    margin: 0;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    font-weight: 500;
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.service-features span {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    background-color: var(--color-secondary);
    color: var(--color-text);
    letter-spacing: 0.05em;
}

.service-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.service-price .price {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
}

.service-price .unit {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-bg);
}

.contact-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.contact-header .divider {
    margin-left: auto;
    margin-right: auto;
}

.contact-lead {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
}

.info-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-secondary);
    flex-shrink: 0;
}

.info-icon i {
    font-size: 1.3rem;
    color: var(--color-primary);
}

.info-text {
    flex: 1;
}

.info-label {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.3rem;
}

.info-value {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.social-link i {
    font-size: 1.2rem;
    color: var(--color-text);
    transition: var(--transition);
}

.social-link:hover i {
    color: var(--color-white);
}

/* ===================================
   Contact Form
   =================================== */

.contact-form-wrapper {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.required {
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.9rem;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
}

.btn-submit {
    padding: 1rem 3rem;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-white);
    background-color: var(--color-primary);
    border: 1px solid var(--color-primary);
    cursor: pointer;
    transition: var(--transition);
    align-self: center;
    margin-top: var(--spacing-md);
}

.btn-submit:hover {
    background-color: transparent;
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.form-message {
    padding: var(--spacing-sm);
    text-align: center;
    font-size: 0.9rem;
    display: none;
    margin-top: var(--spacing-sm);
}

.form-message.success {
    display: block;
    background-color: #F0F9F4;
    color: #2D7A4F;
    border: 1px solid #C6E9D4;
}

.form-message.error {
    display: block;
    background-color: #FFF5F5;
    color: #9B2C2C;
    border: 1px solid #FED7D7;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo-text {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-white);
}

.footer-tagline {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.5);
    margin-top: var(--spacing-xs);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-nav a {
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

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

.footer-bottom p {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.5rem;
}

.footer-legal {
    margin-top: 0.5rem;
}

.footer-legal a {
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: underline;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--color-primary);
}

/* ===================================
   Back to Top Button
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top:hover {
    background-color: var(--color-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.back-to-top.show {
    display: flex;
}

/* ===================================
   Animations
   =================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 968px) {
    :root {
        font-size: 15px;
    }
    
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .concept-content,
    .about-content,
    .services-grid,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-image {
        max-width: 400px;
        margin: 0 auto;
        position: static;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-xl) var(--spacing-md);
        gap: var(--spacing-lg);
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero {
        min-height: 80vh;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    /* Concept Section - Mobile */
    .concept-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .concept-image {
        aspect-ratio: 16/9;
        min-height: 250px;
    }
    
    /* About Section - Mobile */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-image {
        position: relative;
        top: 0;
    }
    
    .profile-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    /* Contact Section - Mobile */
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info,
    .contact-form-wrapper {
        width: 100%;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .service-item {
        flex-direction: column;
    }
    
    .btn-hero,
    .btn-submit {
        width: 100%;
    }
}