/* ============================================
   Northside Rock Sand & Gravel — Custom Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --charcoal-900: #1a1a2e;
    --charcoal-800: #2d2d44;
    --charcoal-700: #3d3d5c;
    --charcoal-600: #4a4a6a;
    --charcoal-500: #6b6b8a;
    --charcoal-400: #9494ad;
    --charcoal-300: #b8b8ca;
    --charcoal-200: #d4d4e0;
    --charcoal-100: #ececf2;
    --charcoal-50:  #f7f7fa;

    --coral-600: #a8432a;
    --coral-500: #C75A3A;
    --coral-400: #d4735a;
    --coral-300: #e09480;
    --coral-200: #eab8a4;
    --coral-100: #f5d5cc;
    --coral-50:  #fdf0ec;

    --sand-100:  #f5f0ea;
    --sand-50:   #faf8f5;

    --white: #ffffff;
    --black: #0d0d14;

    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;

    --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06), 0 1px 2px rgba(26, 26, 46, 0.04);
    --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08), 0 2px 4px rgba(26, 26, 46, 0.04);
    --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.12), 0 4px 12px rgba(26, 26, 46, 0.06);
    --shadow-xl: 0 24px 60px rgba(26, 26, 46, 0.16);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--charcoal-800);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(26, 26, 46, 0.06);
    transition: box-shadow var(--transition), background var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.97);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--charcoal-900);
}

.logo-icon {
    color: var(--coral-500);
    flex-shrink: 0;
}

.logo-light {
    color: var(--white);
}

.logo-light .logo-icon {
    color: var(--coral-300);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.935rem;
    font-weight: 500;
    color: var(--charcoal-700);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
    color: var(--coral-500);
    background: var(--coral-50);
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--coral-500) !important;
    font-weight: 600;
    background: var(--coral-50);
    margin-left: 8px;
}

.nav-phone:hover {
    background: var(--coral-100) !important;
    color: var(--coral-600) !important;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
}

.mobile-toggle:hover {
    background: var(--charcoal-100);
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--charcoal-800);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--charcoal-900);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 46, 0.88) 0%,
        rgba(45, 45, 68, 0.78) 50%,
        rgba(26, 26, 46, 0.85) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(199, 90, 58, 0.15);
    border: 1px solid rgba(199, 90, 58, 0.3);
    border-radius: 50px;
    color: var(--coral-300);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 28px;
    letter-spacing: 0.02em;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5.5vw, 3.8rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 22px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--charcoal-300);
    line-height: 1.65;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 52px;
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--charcoal-300);
    font-size: 0.9rem;
    font-weight: 500;
}

.trust-item svg {
    color: var(--coral-400);
    flex-shrink: 0;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255, 255, 255, 0.4);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--coral-500);
    color: var(--white);
    border-color: var(--coral-500);
}

.btn-primary:hover {
    background: var(--coral-600);
    border-color: var(--coral-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(199, 90, 58, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--charcoal-900);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 17px 34px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

.btn-full {
    width: 100%;
}

/* --- Section Shared --- */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--coral-500);
    margin-bottom: 14px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    color: var(--charcoal-900);
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--charcoal-600);
    line-height: 1.7;
}

/* --- Services --- */
.services {
    padding: 100px 0;
    background: var(--sand-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    border: 1px solid var(--charcoal-100);
    transition: all var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--coral-200);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--coral-50);
    border-radius: var(--radius-md);
    color: var(--coral-500);
    margin-bottom: 22px;
    transition: all var(--transition);
}

.service-card:hover .service-icon {
    background: var(--coral-500);
    color: var(--white);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--charcoal-900);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--charcoal-600);
    line-height: 1.65;
}

/* --- About --- */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-images {
    position: relative;
}

.about-img-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-img-main img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.about-img-secondary {
    position: absolute;
    bottom: -32px;
    right: -24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--white);
}

.about-img-secondary img {
    width: 220px;
    height: 160px;
    object-fit: cover;
}

.about-stat {
    position: absolute;
    top: -20px;
    left: -20px;
    background: var(--coral-500);
    color: var(--white);
    padding: 18px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.about-stat .stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.about-stat .stat-label {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.85;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: 1.02rem;
    color: var(--charcoal-600);
    line-height: 1.75;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--charcoal-800);
}

.feature-check {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--coral-50);
    border-radius: 50%;
    color: var(--coral-500);
    flex-shrink: 0;
}

/* --- Materials --- */
.materials {
    padding: 100px 0;
    background: var(--sand-50);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.material-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--charcoal-100);
    transition: all var(--transition);
}

.material-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--coral-200);
}

.material-img {
    overflow: hidden;
}

.material-img img {
    width: 100%;
    height: 100%;
    min-height: 220px;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.material-info {
    padding: 28px 26px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.material-info h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--charcoal-900);
    margin-bottom: 8px;
}

.material-info p {
    font-size: 0.935rem;
    color: var(--charcoal-600);
    line-height: 1.65;
}

.materials-cta {
    text-align: center;
    font-size: 1.05rem;
    color: var(--charcoal-600);
}

.materials-cta a {
    color: var(--coral-500);
    font-weight: 600;
    border-bottom: 2px solid var(--coral-200);
    padding-bottom: 2px;
    transition: border-color var(--transition), color var(--transition);
}

.materials-cta a:hover {
    color: var(--coral-600);
    border-color: var(--coral-500);
}

/* --- CTA Banner --- */
.cta-banner {
    padding: 80px 0;
    background: var(--charcoal-900);
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(199, 90, 58, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-text {
    flex: 1;
    min-width: 280px;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 14px;
}

.cta-desc {
    font-size: 1.05rem;
    color: var(--charcoal-400);
    line-height: 1.7;
}

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

/* --- Contact --- */
.contact {
    padding: 100px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    padding: 24px;
    background: var(--sand-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--charcoal-100);
    transition: all var(--transition);
}

.contact-card:hover {
    border-color: var(--coral-200);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--coral-50);
    border-radius: var(--radius-sm);
    color: var(--coral-500);
    flex-shrink: 0;
}

.contact-card h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--charcoal-500);
    margin-bottom: 6px;
    font-weight: 600;
}

.contact-card p,
.contact-card a {
    font-size: 1rem;
    color: var(--charcoal-800);
    line-height: 1.6;
}

.contact-card a:hover {
    color: var(--coral-500);
}

/* --- Contact Form --- */
.contact-form-wrapper {
    background: var(--sand-50);
    border-radius: var(--radius-xl);
    padding: 40px;
    border: 1px solid var(--charcoal-100);
}

.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--charcoal-900);
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--charcoal-700);
    margin-bottom: 7px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--charcoal-900);
    background: var(--white);
    border: 1.5px solid var(--charcoal-200);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--charcoal-400);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--coral-400);
    box-shadow: 0 0 0 3px rgba(199, 90, 58, 0.1);
}

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

.form-success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--coral-50);
    border-radius: 50%;
    color: var(--coral-500);
}

.form-success h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--charcoal-900);
    margin-bottom: 10px;
}

.form-success p {
    color: var(--charcoal-600);
    font-size: 0.95rem;
}

/* --- Map --- */
.map-section {
    border-top: 1px solid var(--charcoal-100);
}

.map-container {
    filter: saturate(0.7) contrast(1.05);
}

/* --- Footer --- */
.footer {
    background: var(--charcoal-900);
    color: var(--charcoal-400);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.935rem;
    line-height: 1.7;
    color: var(--charcoal-400);
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 18px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--charcoal-400);
    transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
    color: var(--coral-400);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-contact a {
    color: var(--charcoal-400);
}

.footer-contact a:hover {
    color: var(--coral-400);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--charcoal-500);
}

.footer-bottom a {
    color: var(--charcoal-500);
}

.footer-bottom a:hover {
    color: var(--coral-400);
}

/* --- Scroll Reveal --- */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        border-bottom: 1px solid var(--charcoal-100);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: transform var(--transition), opacity var(--transition);
        pointer-events: none;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        width: 100%;
        padding: 14px 16px;
    }

    .nav-phone {
        margin-left: 0;
        justify-content: center;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-content {
        padding: 100px 20px 60px;
    }

    .hero-trust {
        gap: 20px;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-img-secondary {
        right: 0;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

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

    .material-item {
        grid-template-columns: 1fr;
    }

    .material-img img {
        min-height: 200px;
    }

    .cta-inner {
        flex-direction: column;
        text-align: center;
    }

    .cta-actions {
        justify-content: center;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form-wrapper {
        padding: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-trust {
        flex-direction: column;
        gap: 12px;
    }

    .about-img-secondary {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: 16px;
    }

    .about-stat {
        top: auto;
        bottom: -16px;
        left: 16px;
    }

    .services, .about, .materials, .contact {
        padding: 72px 0;
    }
}