/* ========================================
   GREYSTONE PROPERTY ADVISORS
   Clean, editorial design system
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #fafaf8;
    --color-bg-alt: #f2f1ed;
    --color-bg-dark: #111111;
    --color-text: #1a1a1a;
    --color-text-secondary: #5a5a5a;
    --color-text-light: #999999;
    --color-text-on-dark: #e8e8e6;
    --color-accent: #2c3e2d;
    --color-accent-light: #3d5a3e;
    --color-border: #ddd;
    --color-border-light: #eee;

    --font-serif: 'DM Serif Display', Georgia, serif;
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 8rem;

    --nav-height: 72px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

address {
    font-style: normal;
}

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Section --- */
.section {
    padding: var(--space-2xl) 0;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 14px 32px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-accent-light);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    border-color: var(--color-text);
}

.btn-full {
    width: 100%;
    text-align: center;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
    background-color: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 var(--color-border-light);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 36px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-text);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--color-text);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 28px;
    height: 20px;
    position: relative;
    flex-direction: column;
    justify-content: space-between;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background-color: var(--color-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.active span:first-child {
    transform: translateY(9px) rotate(45deg);
}

.nav-toggle.active span:last-child {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    z-index: 99;
    padding: var(--space-lg) 24px;
    border-bottom: 1px solid var(--color-border-light);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.open {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu a {
    display: block;
    font-size: 1.25rem;
    padding: 12px 0;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-color: var(--color-bg);
    overflow: hidden;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--nav-height) + var(--space-lg)) 24px var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    width: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-visual {
    position: relative;
    width: 100%;
    height: 560px;
    z-index: 1;
    pointer-events: auto;
}

#hero-canvas {
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
}

.hero-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-lg);
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: max(24px, calc((100vw - 1200px) / 2 + 24px));
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-scroll span {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-light);
}

.hero-scroll-line {
    width: 48px;
    height: 1px;
    background-color: var(--color-border);
    position: relative;
    overflow: hidden;
}

.hero-scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--color-text);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { left: -100%; }
    50% { left: 0; }
    100% { left: 100%; }
}

/* --- Numbers --- */
.numbers {
    background-color: var(--color-bg-dark);
    padding: var(--space-xl) 0;
}

.numbers-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.number-item {
    text-align: center;
}

.number-value {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 3.5vw, 3rem);
    color: var(--color-text-on-dark);
}

.number-suffix {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    color: var(--color-text-on-dark);
    opacity: 0.7;
}

.number-label {
    display: block;
    font-size: 0.8125rem;
    color: #777;
    margin-top: 8px;
    letter-spacing: 0.02em;
}

/* --- About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-left .section-title {
    margin-bottom: var(--space-lg);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 2px solid var(--color-accent);
    padding-left: var(--space-md);
    margin-top: var(--space-sm);
}

.about-highlight {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.about-highlight:last-child {
    border-bottom: none;
}

.about-highlight-year {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-text);
    display: block;
    margin-bottom: 4px;
}

.about-highlight p {
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--color-text-secondary);
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.about-text:last-child {
    margin-bottom: 0;
}

/* --- Services --- */
.services {
    background-color: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background-color: var(--color-border);
    border: 1px solid var(--color-border);
}

.service-card {
    background-color: var(--color-bg-alt);
    padding: var(--space-lg);
    transition: background-color 0.3s ease;
}

.service-card:hover {
    background-color: var(--color-bg);
}

.service-number {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--space-md);
}

.service-title {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 400;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.service-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* --- Portfolio --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.portfolio-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.portfolio-card:hover {
    border-color: var(--color-border);
}

.portfolio-card-large {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
}

.portfolio-img {
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
}

.portfolio-card-large .portfolio-img {
    aspect-ratio: auto;
    min-height: 360px;
}

.portfolio-img-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-img-placeholder span {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.15);
    letter-spacing: 0.02em;
}

.portfolio-info {
    padding: var(--space-md) var(--space-md) var(--space-lg);
}

.portfolio-card-large .portfolio-info {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.portfolio-tag {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
    display: block;
}

.portfolio-info h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.portfolio-card-large .portfolio-info h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
}

.portfolio-info p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* --- Team --- */
.team-intro {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: var(--space-xl);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.team-photo {
    aspect-ratio: 3 / 4;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.team-initials {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.12);
}

.team-name {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.team-role {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--space-sm);
}

.team-bio {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* --- Testimonial --- */
.testimonial {
    background-color: var(--color-bg-alt);
}

.testimonial-quote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-quote p {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    line-height: 1.5;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.testimonial-author {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    font-style: normal;
    color: var(--color-text);
}

.testimonial-title {
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

/* --- Contact --- */
.contact {
    background-color: var(--color-bg-dark);
}

.contact .section-label {
    color: #666;
}

.contact .section-title {
    color: var(--color-text-on-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.contact-desc {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: #888;
    margin-bottom: var(--space-lg);
}

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

.contact-detail-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 4px;
}

.contact-detail a,
.contact-detail address {
    font-size: 0.9375rem;
    color: var(--color-text-on-dark);
    line-height: 1.6;
}

.contact-detail a:hover {
    text-decoration: underline;
}

/* --- Contact Form --- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #888;
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    padding: 12px 16px;
    background-color: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--color-text-on-dark);
    outline: none;
    transition: border-color 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #555;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group select option {
    background-color: #222;
    color: var(--color-text-on-dark);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact .btn-primary {
    margin-top: var(--space-xs);
}

/* --- Footer --- */
.footer {
    background-color: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: var(--space-xl) 0 var(--space-lg);
}

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

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    color: var(--color-text-on-dark);
    display: block;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: #666;
    line-height: 1.6;
}

.footer-links-group h4 {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: var(--space-md);
}

.footer-links-group li {
    margin-bottom: 10px;
}

.footer-links-group a {
    font-size: 0.9375rem;
    color: #999;
    transition: color 0.2s ease;
}

.footer-links-group a:hover {
    color: var(--color-text-on-dark);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: var(--space-lg);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: #555;
}

/* --- Scroll Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        padding-top: calc(var(--nav-height) + var(--space-xl));
    }

    .hero-visual {
        height: 300px;
    }

    .hero-scroll {
        left: 24px;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

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

    .portfolio-card-large {
        grid-template-columns: 1fr;
    }

    .portfolio-card-large .portfolio-img {
        min-height: 200px;
        aspect-ratio: 16 / 10;
    }

    .team-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.25rem;
    }

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

    .hero-actions .btn {
        text-align: center;
    }

    .numbers-inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
}