:root {
    --bg-color: #ffffff;
    --bg-accent: #fafafa;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --brand-navy: #20333F;
    --brand-gold: #937A46;
    --border-color: rgba(0, 0, 0, 0.06);
    --max-width: 1100px;
    --transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Typography Consistency */
h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 6vw;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: background 0.4s ease, border 0.4s ease;
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.8rem 6vw;
    transition: padding 0.4s ease;
}

header.scrolled nav {
    padding: 1rem 6vw;
}

.header-logo-wrapper {
    height: 44px;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
    pointer-events: none;
}

header.scrolled .header-logo-wrapper {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.header-logo {
    height: 100%;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* Burger Button - Fixed Logic */
.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 2000; /* Higher than menu */
    position: relative;
}

.burger span {
    display: block;
    width: 24px;
    height: 1.5px;
    background-color: var(--brand-navy);
    transition: 0.3s ease;
    position: absolute;
}

.burger span:first-child { transform: translateY(-4px); }
.burger span:last-child { transform: translateY(4px); }

.burger.active span:first-child { transform: rotate(45deg); }
.burger.active span:last-child { transform: rotate(-45deg); }

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #ffffff;
    z-index: 1500;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateY(-100%);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    visibility: hidden;
}

.mobile-menu.active {
    transform: translateY(0);
    visibility: visible;
}

.mobile-nav-links {
    list-style: none;
    text-align: center;
}

.mobile-nav-links li {
    margin-bottom: 2.5rem;
}

.mobile-nav-links a {
    color: var(--brand-navy);
    font-size: 2.2rem;
    font-family: 'Playfair Display', serif;
}

/* Hero Section */
.hero {
    padding: 12rem 0 8rem;
    text-align: center;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-logo-container {
    margin-bottom: 3.5rem;
}

.hero-logo {
    height: clamp(120px, 15vw, 180px);
    width: auto;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    margin-bottom: 1.5rem;
    color: var(--brand-navy);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-secondary);
    margin: 0 auto 3.5rem;
    max-width: 600px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Section Common Styling */
.section { padding: 10rem 0; }

.section-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--brand-gold);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 5rem;
    color: var(--brand-navy);
}

/* Cases Styling */
.case-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    padding-bottom: 5rem;
    margin-bottom: 5rem;
    border-bottom: 1px solid var(--border-color);
}

.case-info h3 { font-size: clamp(1.6rem, 3vw, 2rem); margin-bottom: 1.2rem; }
.case-info p { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 1.8rem; font-weight: 300; }
.case-value { font-size: 0.85rem; font-weight: 700; color: var(--brand-gold); text-transform: uppercase; }

/* Expertise */
.expertise-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 10vw;
}

.expertise-text p {
    font-size: 1.4rem;
    color: var(--text-secondary);
    font-weight: 300;
    line-height: 1.5;
}

.expertise-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.exp-card {
    background: white;
    padding: 3rem 2rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    aspect-ratio: 1 / 1;
}

.exp-card:hover {
    border-color: var(--brand-gold);
    transform: translateY(-5px);
}

.exp-card h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 1.1rem 2.2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: var(--transition);
}

.btn-primary { background: var(--brand-navy); color: #fff; }
.btn-secondary { border: 1px solid var(--brand-navy); color: var(--brand-navy); }

/* Form */
.clean-form { background: #fff; padding: 3rem; border: 1px solid var(--border-color); }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
input, textarea { width: 100%; padding: 1.2rem; border: none; border-bottom: 1px solid var(--border-color); font-size: 1rem; outline: none; }

/* Mobile Adjustments - Fixed Focal Logic */
@media (max-width: 768px) {
    header { background: transparent !important; border: none !important; }
    header.scrolled { background: rgba(255, 255, 255, 0.95) !important; border-bottom: 1px solid var(--border-color) !important; }
    
    /* Header logo stays hidden until scrolled on mobile too */
    .header-logo-wrapper { opacity: 0; transform: translateY(10px); }
    header.scrolled .header-logo-wrapper { opacity: 1; transform: translateY(0); }

    nav { padding: 1.2rem 6vw !important; }
    .nav-links { display: none; }
    .burger { display: flex; }
    
    .hero { padding-top: 8rem; }
    .hero-logo { height: 110px; }
    .hero-actions { flex-direction: column; }
    
    .section { padding: 6rem 0; }
    .case-item { grid-template-columns: 1fr; gap: 1rem; }
    
    .expertise-grid { grid-template-columns: 1fr; gap: 4rem; }
    .expertise-list { grid-template-columns: 1fr; gap: 1.5rem; }
    .clean-form { padding: 2rem 1.2rem; }
    .input-row { grid-template-columns: 1fr; }
}

/* Modal System */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    background: #fff;
    width: 90%;
    max-width: 650px;
    padding: 3.5rem;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.15);
    transform: translateY(30px);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2.2rem;
    color: var(--brand-navy);
    cursor: pointer;
    transition: 0.3s;
}

.modal-close:hover { color: var(--brand-gold); }

/* Quiz Integration */
.quiz-container { width: 100%; }
.progress-container { width: 100%; height: 2px; background: var(--border-color); margin-bottom: 2.5rem; }
#quizProgress { height: 100%; background: var(--brand-gold); width: 0; transition: width 0.4s ease; }

.quiz-title { font-size: 2rem; color: var(--brand-navy); margin-bottom: 0.5rem; }
.quiz-step-info { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 2px; color: var(--text-secondary); margin-bottom: 2rem; }
.quiz-question { font-size: 1.4rem; font-weight: 500; margin-bottom: 2rem; color: var(--brand-navy); line-height: 1.4; }

.quiz-option { padding: 1.2rem; border: 1px solid var(--border-color); margin-bottom: 0.8rem; cursor: pointer; transition: 0.2s; }
.quiz-option:hover { border-color: var(--brand-navy); background: rgba(32, 51, 63, 0.02); }
.quiz-option.selected { border-color: var(--brand-gold); background: rgba(147, 122, 70, 0.05); }

.hidden { display: none !important; }
.input-group { margin-bottom: 1rem; }
.input-group input { width: 100%; padding: 1.2rem; border: none; border-bottom: 1px solid var(--border-color); outline: none; font-size: 1rem; background: transparent; }

@media (max-width: 768px) {
    .modal-content { padding: 2rem 1.5rem; }
    .quiz-title { font-size: 1.6rem; }
    .quiz-question { font-size: 1.2rem; }
}