@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Noto+Serif+JP:wght@300;400;500;600;700&display=swap');

:root {
    --color-navy: #0F1722;
    --color-navy-light: #1A2634;
    --color-gold: #A4855C;
    --color-gold-light: #D4BFA5;
    --color-white: #FFFFFF;
    --color-offwhite: #F8F7F5;
    --color-stone: #E6E4DD;
    --color-text-main: #2C3640;
    --color-text-muted: #5B6673;
    
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Inter', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-main);
    background-color: var(--color-white);
    line-height: 1.7;
    font-size: 16px;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--color-navy);
    font-weight: 400;
    line-height: 1.3;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

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

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(15, 23, 34, 0.05);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-navy);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.nav-desktop {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-desktop a {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-navy);
    position: relative;
    padding-bottom: 0.5rem;
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-gold);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 1px;
    background-color: var(--color-navy);
    position: absolute;
    transition: var(--transition);
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 9px; }
.menu-toggle span:nth-child(3) { top: 18px; }

.menu-toggle.open span:nth-child(1) { transform: rotate(45deg); top: 9px; }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: rotate(-45deg); top: 9px; }

.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-white);
    padding: 100px 40px;
    box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    transition: right 0.5s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.nav-mobile.open {
    right: 0;
}

.nav-mobile a {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-navy);
}

/* Layout Primitives */
.section-padding {
    padding: var(--spacing-xl) 0;
}

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

.bg-offwhite { background-color: var(--color-offwhite); }
.bg-navy { background-color: var(--color-navy); color: var(--color-white); }
.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy h4, .bg-navy h5, .bg-navy p { color: var(--color-white); }
.bg-navy .text-muted { color: rgba(255,255,255,0.7); }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.grid-2-asym {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.grid-2-asym-rev {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

/* Specific Sections */

/* Hero Modern */
.hero {
    min-height: 90vh;
    padding-top: 80px; /* offset header */
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--color-navy);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-subtitle {
    display: inline-block;
    font-family: var(--font-sans);
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: 2rem;
    line-height: 1.1;
}

.hero-desc {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin-bottom: 3rem;
}

/* Page Header (Inner pages) */
.page-header {
    padding: 160px 0 80px;
    background-color: var(--color-offwhite);
    border-bottom: 1px solid var(--color-stone);
}

.page-header-content {
    max-width: 800px;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--color-text-muted);
}

/* Editorial Block */
.editorial-block {
    position: relative;
}

.editorial-tag {
    font-family: var(--font-sans);
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: block;
}

.editorial-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/5;
    border-radius: 2px;
}

.editorial-img-landscape {
    aspect-ratio: 16/9;
}

/* Practice Area Cards */
.practice-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-stone);
    padding: var(--spacing-md);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.practice-card:hover {
    border-color: var(--color-gold);
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    transform: translateY(-5px);
}

.practice-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-navy);
}

.practice-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    flex-grow: 1;
}

.practice-card-link {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
}
.practice-card-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s;
}
.practice-card:hover .practice-card-link::after {
    transform: translateX(5px);
}

/* Framework List */
.framework-list {
    list-style: none;
    counter-reset: framework-counter;
}

.framework-list li {
    position: relative;
    padding-left: 4rem;
    margin-bottom: 3rem;
}

.framework-list li::before {
    counter-increment: framework-counter;
    content: "0" counter(framework-counter);
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-gold);
    font-weight: 400;
    line-height: 1;
}

.framework-list h3 {
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 0;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--color-gold);
    color: var(--color-white);
    border: 1px solid var(--color-gold);
}

.btn-primary:hover {
    background-color: var(--color-navy);
    border-color: var(--color-navy);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.3);
}

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

/* Footer */
.footer {
    background-color: var(--color-navy);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 2rem;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-brand h2 {
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    max-width: 300px;
}

.footer-nav h4 {
    color: var(--color-gold);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    font-family: var(--font-sans);
}

.footer-nav ul {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

/* Forms */
.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    color: var(--color-navy);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-white);
    border: 1px solid var(--color-stone);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-text-main);
    border-radius: 0;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-gold);
}

.contact-info-block {
    background-color: var(--color-navy);
    color: var(--color-white);
    padding: var(--spacing-lg);
}
.contact-info-block h3 { color: var(--color-white); margin-bottom: 2rem; }
.contact-info-item { margin-bottom: 1.5rem; }
.contact-info-item h4 { color: var(--color-gold); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; font-family: var(--font-sans);}
.contact-info-item p { color: rgba(255,255,255,0.8); margin:0; }

/* Utilities */
.text-center { text-align: center; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }
.max-w-md { max-width: 800px; margin-left: auto; margin-right: auto; }

/* Rich Text for Legal Pages */
.rich-text h2 { margin-top: 3rem; margin-bottom: 1rem; font-size: 1.75rem; }
.rich-text p { margin-bottom: 1.5rem; color: var(--color-text-muted); }
.rich-text ul { margin-bottom: 1.5rem; padding-left: 1.5rem; color: var(--color-text-muted); }
.rich-text li { margin-bottom: 0.5rem; }

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
    h1 { font-size: 3rem; }
}

@media (max-width: 768px) {
    .grid-2, .grid-2-asym, .grid-2-asym-rev { grid-template-columns: 1fr; gap: 3rem; }
    .grid-3 { grid-template-columns: 1fr; }
    .nav-desktop { display: none; }
    .menu-toggle { display: block; }
    
    .section-padding { padding: 4rem 0; }
    .section-padding-sm { padding: 3rem 0; }
    
    .footer-top { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 1rem; }
    
    .editorial-img { aspect-ratio: 16/9; }
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 480px) {
    .page-header { padding: 120px 0 60px; }
    h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 0.75rem; }
    .btn { width: 100%; }
}