:root {
    --primary: #121212;
    --secondary: #8E735B;
    --bg: #F9F7F2;
    --text: #121212;
    --text-muted: #666666;
    --white: #ffffff;
    --header-height: 100px;
    --header-height-scrolled: 80px;
    --container-width: 1400px;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Montserrat', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.menu-open {
    overflow: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    color: var(--primary);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 4rem;
}

/* Header Re-engineered */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 2000;
    transition: var(--transition);
    display: flex;
    align-items: center;
    background: transparent;
}

.main-header.scrolled {
    background-color: rgba(249, 247, 242, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    height: var(--header-height-scrolled);
    box-shadow: 0 10px 40px rgba(0,0,0,0.03);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    color: var(--primary);
    position: relative;
    z-index: 3001;
    flex-shrink: 1;
}

.logo span {
    font-weight: 400;
    font-style: italic;
    margin-left: 0.2rem;
    color: var(--secondary);
}

.desktop-nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links {
    display: flex;
    gap: 3.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-shrink: 0;
}

.btn-cta {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--primary);
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.7rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--primary);
    white-space: nowrap;
}

.btn-cta:hover {
    background-color: transparent;
    color: var(--primary);
}

/* Mobile Toggle - Improved Visibility */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    gap: 6px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 3001;
    padding: 0;
}

.mobile-toggle span {
    display: block;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-toggle span:nth-child(1) { width: 100%; }
.mobile-toggle span:nth-child(2) { width: 100%; }
.mobile-toggle span:nth-child(3) { width: 100%; }

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu Overlay - Improved */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--bg);
    z-index: 3000;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    padding: 4rem 2rem;
}

.mobile-menu.active {
    transform: translateX(-100%);
    visibility: visible;
}

.mobile-nav-links {
    text-align: center;
    width: 100%;
}

.mobile-nav-links li {
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.mobile-menu.active .mobile-nav-links li {
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav-links a {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--primary);
    display: block;
    line-height: 1.2;
}

.mobile-nav-links a:hover {
    color: var(--secondary);
    font-style: italic;
}

.mobile-menu-footer {
    position: absolute;
    bottom: 4rem;
    text-align: center;
    width: 100%;
}

.mobile-menu-email {
    font-size: 0.9rem;
    color: var(--secondary);
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    display: block;
}

.mobile-menu-copyright {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

/* Sections */
section {
    padding: 10rem 0;
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
}

.hero-content {
    max-width: 850px;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: 5.5rem;
    margin-bottom: 2.5rem;
    letter-spacing: -0.03em;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 4rem;
    max-width: 600px;
    font-weight: 300;
}

.hero-image {
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Grids & Cards */
.grid {
    display: grid;
    gap: 5rem;
}

.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
    transition: var(--transition);
}

.card-img-wrapper {
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.card:hover .card-img {
    transform: scale(1.05);
}

.card-title {
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Insights Special */
.insights-intro {
    max-width: 700px;
    margin-bottom: 6rem;
}

.calculator-box {
    background-color: var(--white);
    padding: 4rem;
    box-shadow: 0 30px 60px rgba(0,0,0,0.03);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e2e2e2;
    background: #fafafa;
    font-family: inherit;
    font-size: 1rem;
}

.calc-result {
    padding: 2rem;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.calc-result h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.yield-value {
    font-size: 3.5rem;
    font-family: var(--font-serif);
    color: var(--secondary);
}

/* Footer Re-engineered */
.main-footer {
    background-color: var(--primary);
    color: var(--white);
    padding: 8rem 0 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 8rem;
    margin-bottom: 6rem;
}

.footer-brand .logo {
    color: var(--white);
    font-size: 2.2rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: #999;
    max-width: 450px;
    font-size: 0.95rem;
}

.footer-nav-title {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    margin-bottom: 2rem;
    color: var(--secondary);
}

.footer-links li {
    margin-bottom: 1.2rem;
}

.footer-links a {
    color: #bbb;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: 3rem;
    border-top: 1px solid #2a2a2a;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: #666;
}

/* Responsive Overhaul */
@media (max-width: 1200px) {
    .container { padding: 0 3rem; }
    .hero-title { font-size: 4rem; }
    .desktop-nav { display: none; }
    .mobile-toggle { display: flex; }
}

@media (max-width: 900px) {
    .hero {
        padding-top: 150px;
        text-align: center;
        flex-direction: column;
    }
    .hero-content {
        max-width: 100%;
        margin-bottom: 4rem;
    }
    .hero-image {
        position: relative;
        width: 100%;
        height: 500px;
        right: auto;
    }
    .hero-tagline { margin: 0 auto 4rem; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .calc-grid { grid-template-columns: 1fr; }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .header-actions {
        gap: 1rem;
    }
    .btn-cta {
        padding: 0.6rem 1.2rem;
        font-size: 0.65rem;
    }
    .container { padding: 0 2rem; }
}

@media (max-width: 600px) {
    .container { padding: 0 1.2rem; }
    .hero-title { font-size: 2.8rem; }
    .logo { font-size: 1.2rem; }
    .header-actions { gap: 0.8rem; }
}