/* ============================================
   Townsend Bros Construction Co Ltd
   Forestry Road Construction Website
   ============================================ */

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

:root {
    --color-dark: #1a1a1a;
    --color-body: #2c2c2c;
    --color-mid: #555;
    --color-light: #999;
    --color-border: #ddd;
    --color-bg: #fff;
    --color-bg-alt: #f5f4f0;
    --color-accent: #3d6b4f;
    --color-accent-dark: #2d5039;
    --color-accent-light: #4a8c63;
    --color-overlay: rgba(26, 26, 26, 0.55);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --nav-height: 72px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-body);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    color: var(--color-dark);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-mid);
    max-width: 540px;
    font-weight: 300;
}

.section-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 3rem;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: background var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 1px 0 var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    transition: opacity var(--transition);
}

.nav-logo:hover {
    opacity: 0.7;
}

.logo-text {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-dark);
}

.nav .logo-text {
    color: #fff;
}

.nav.scrolled .logo-text {
    color: var(--color-dark);
}

.logo-sub {
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
}

.nav.scrolled .logo-sub {
    color: var(--color-light);
}

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

.nav-links a {
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    padding: 0.25rem 0;
}

.nav.scrolled .nav-links a {
    color: var(--color-mid);
}

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

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

.nav-links a:hover {
    color: #fff;
}

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

/* Mobile toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 28px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    position: absolute;
    left: 0;
    transition: var(--transition);
}

.nav.scrolled .nav-toggle span {
    background: var(--color-dark);
}

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

.nav-toggle.active span:nth-child(1) {
    top: 9px;
    transform: rotate(45deg);
    background: var(--color-dark);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    top: 9px;
    transform: rotate(-45deg);
    background: var(--color-dark);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-slideshow {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    transform: scale(1.05);
}

.hero-slide.active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 1.5s ease-in-out, transform 8s ease-out;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.35) 0%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding: 0 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    color: #fff;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s 0.3s forwards;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    letter-spacing: 0.04em;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 1s 0.6s forwards;
    color: rgba(255, 255, 255, 0.85);
}

.hero-cta {
    display: inline-block;
    margin-top: 2.5rem;
    padding: 0.85rem 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.5);
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #fff;
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 1s 0.9s forwards;
}

.hero-cta:hover {
    background: #fff;
    color: var(--color-dark);
    border-color: #fff;
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { top: -100%; }
    100% { top: 100%; }
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Projects Grid --- */
.projects {
    padding: 6rem 0 4rem;
    background: var(--color-bg);
}

.projects-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.project-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    display: block;
    cursor: pointer;
}

.project-card--wide {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
}

.project-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-slow);
}

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0) 60%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
    color: #fff;
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.project-name {
    font-size: 1.3rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0.25rem;
}

.project-location {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 300;
}

/* --- Profile Section --- */
.profile {
    padding: 6rem 0;
    background: var(--color-bg-alt);
}

.profile-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.profile-image {
    position: relative;
    overflow: hidden;
}

.profile-image img {
    width: 100%;
    height: auto;
    display: block;
}

.profile-content .section-title {
    margin-bottom: 1.5rem;
}

.profile-lead {
    font-size: 1.15rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-dark);
    margin-bottom: 1.25rem;
}

.profile-content p {
    font-size: 0.95rem;
    color: var(--color-mid);
    margin-bottom: 1rem;
    font-weight: 300;
}

.profile-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.35rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-light);
}

/* --- Services Section --- */
.services {
    padding: 6rem 0;
    background: var(--color-bg);
}

.services-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    padding: 2.5rem 2rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.05rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.service-card p {
    font-size: 0.88rem;
    color: var(--color-mid);
    font-weight: 300;
    line-height: 1.7;
}

/* --- Parallax Break --- */
.parallax-break {
    position: relative;
    height: 50vh;
    min-height: 350px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
}

.parallax-overlay {
    position: absolute;
    inset: 0;
    background: rgba(26, 26, 26, 0.6);
}

.parallax-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 2rem;
}

.parallax-content blockquote {
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 300;
    color: #fff;
    line-height: 1.5;
    max-width: 700px;
    font-style: italic;
}

/* --- Clients Section --- */
.clients {
    padding: 6rem 0;
    background: var(--color-bg-alt);
}

.clients-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.client-item {
    padding: 2rem 1.5rem;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--color-mid);
    letter-spacing: 0.02em;
    border: 1px solid transparent;
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition);
}

.client-item:nth-child(-n+4) {
    border-top: 1px solid var(--color-border);
}

.client-item:nth-child(4n+1) {
    border-left: 1px solid var(--color-border);
}

.client-item:nth-child(4n) {
    border-right: 1px solid var(--color-border);
}

.client-item:hover {
    color: var(--color-accent);
    background: rgba(61, 107, 79, 0.04);
}

/* --- Contact Section --- */
.contact {
    padding: 6rem 0;
    background: var(--color-bg);
}

.contact-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info .section-title {
    margin-bottom: 1rem;
}

.contact-lead {
    font-size: 1.1rem;
    color: var(--color-mid);
    font-weight: 300;
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item h4 {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: 0.4rem;
}

.contact-item p {
    font-size: 0.95rem;
    color: var(--color-mid);
    font-weight: 300;
    line-height: 1.7;
}

.contact-item a:hover {
    color: var(--color-accent);
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-body);
    transition: border-color var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-light);
}

.btn-submit {
    align-self: flex-start;
    padding: 0.85rem 2.5rem;
    background: var(--color-accent);
    color: #fff;
    border: none;
    font-family: var(--font-primary);
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-submit:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(61, 107, 79, 0.3);
}

/* --- Footer --- */
.footer {
    padding: 3rem 0;
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.5);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.footer-brand .logo-text {
    color: #fff;
    font-size: 1rem;
}

.footer-brand .logo-sub {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.62rem;
}

.footer-copy {
    font-size: 0.78rem;
    font-weight: 300;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-size: 0.78rem;
    font-weight: 300;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: #fff;
}

/* --- Scroll Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .project-card--wide {
        grid-column: span 2;
    }

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

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

    .client-item:nth-child(4n+1) {
        border-left: none;
    }

    .client-item:nth-child(4n) {
        border-right: none;
    }

    .client-item:nth-child(3n+1) {
        border-left: 1px solid var(--color-border);
    }

    .client-item:nth-child(3n) {
        border-right: 1px solid var(--color-border);
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition);
    }

    .nav-links.active {
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        color: var(--color-dark) !important;
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .profile-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

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

    .project-card--wide {
        grid-column: span 1;
    }

    .project-card {
        aspect-ratio: 16 / 10;
    }

    .project-overlay {
        opacity: 1;
    }

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

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

    .client-item:nth-child(3n+1) {
        border-left: none;
    }

    .client-item:nth-child(3n) {
        border-right: none;
    }

    .client-item:nth-child(2n+1) {
        border-left: 1px solid var(--color-border);
    }

    .client-item:nth-child(2n) {
        border-right: 1px solid var(--color-border);
    }

    .contact-inner {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .parallax-break {
        background-attachment: scroll;
    }

    .footer-inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .profile-stats {
        gap: 2rem;
    }

    .hero-scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    .section-header {
        padding: 0 1.5rem 2.5rem;
    }

    .profile-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

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

    .client-item {
        border-left: 1px solid var(--color-border) !important;
        border-right: 1px solid var(--color-border) !important;
    }
}