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

html {
    overflow-x: hidden;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #17283a;
    background: #f7f9fc;
    line-height: 1.6;
}

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

img {
    max-width: 100%;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 20px 5%;
    background: white;
}

.logo {
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 900;
}

.logo span {
    display: block;
    font-size: .65rem;
    letter-spacing: 3px;
    color: #1676d2;
}

.menu-toggle {
    border: none;
    background: none;
    font-size: 1.8rem;
    cursor: pointer;
}

.main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 15px;
    padding: 20px 0;
}

.main-nav.open {
    display: flex;
}

.main-nav a {
    padding: 10px 0;
}

.emergency-btn {
    background: #e87529;
    color: white;
    padding: 12px 18px;
    font-weight: bold;
    font-size: .85rem;
}

.section-label {
    color: #1676d2;
    font-size: .75rem;
    letter-spacing: 2px;
    font-weight: 800;
}

h1,
h2,
h3 {
    line-height: 1.15;
}

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

.hero-content {
    padding: 60px 5%;
}

.hero h1 {
    font-size: clamp(2.5rem, 9vw, 5rem);
    margin: 25px 0;
}

.hero p {
    color: #596877;
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 35px;
}

.hero-actions a,
.button {
    background: #1676d2;
    color: white;
    padding: 16px 25px;
    text-align: center;
    font-weight: bold;
}

.hero-actions .secondary {
    background: #e87529;
}

.trust-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 35px;
}

.trust-points span {
    background: white;
    padding: 10px;
    font-size: .85rem;
    text-align: center;
}

.hero-image {
    min-height: 400px;
    background:
        linear-gradient(rgba(0, 0, 0, .2),
            rgba(0, 0, 0, .5)),
        url("./assets/imgs/hvac-tech.jpg");
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.emergency-card {
    background: white;
    padding: 25px;
    width: 100%;
}

.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 50px 5%;
    background: #14283d;
    color: white;
}

.stats div {
    text-align: center;
}

.stats strong {
    display: block;
    font-size: clamp(2rem, 8vw, 3rem);
}

.stats span {
    color: #cbd5df;
}

.problem-section,
.services,
.decision,
.trust-section,
.reviews,
.faq {
    padding: 70px 5%;
}

.problem-section h2,
.services h2,
.decision h2,
.trust-section h2,
.reviews h2,
.faq h2 {
    font-size: clamp(2rem, 7vw, 4rem);
    margin: 20px 0 40px;
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.problem-grid div {
    background: white;
    padding: 25px;
    border-left: 5px solid #1676d2;
    font-weight: bold;
}

.service-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.service-grid article {
    background: white;
    padding: 30px;
}

.service-grid h3 {
    font-size: 1.5rem;
}

.service-grid p {
    color: #667;
    margin: 15px 0;
}

.service-grid a {
    color: #1676d2;
    font-weight: bold;
}

.service-feature {
    display: flex;
    flex-direction: column;
    gap: 35px;
    padding: 70px 5%;
    background: white;
}

.service-feature.alternate {
    background: #eef5fc;
}

.feature-content h2 {
    font-size: clamp(2rem, 7vw, 4rem);
    margin: 20px 0;
}

.feature-content p {
    color: #667;
}

.feature-content ul {
    margin: 25px 0;
}

.feature-content li {
    list-style: none;
    margin: 12px 0;
}

.feature-image {
    width: 100%;
    aspect-ratio: 4/3;
    background-size: cover;
    background-position: center;
}

.ac-image {
    background-image: url("./assets/imgs/ac-repair.jpg");
}

.heating-image {
    background-image: url("./assets/imgs/heating-services.jpg");
}

.decision {
    text-align: center;
}

.decision-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.decision-grid div {
    background: white;
    padding: 30px;
    text-align: left;
}

.decision li {
    list-style: none;
    margin: 10px 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.trust-grid div {
    background: white;
    padding: 30px;
}

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

.team-image {
    height: 350px;
    background: url("./assets/imgs/coworkers-servicing-hvac-system.jpg");
    background-size: cover;
    background-position: center;
}

.team-content {
    padding: 60px 5%;
}

.membership {
    padding: 70px 5%;
    background: #1676d2;
    color: white;
    text-align: center;
}

.membership h2 {
    font-size: clamp(2rem, 7vw, 4rem);
}

.membership-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 40px;
}

.membership-grid div {
    background: white;
    color: #17283a;
    padding: 25px;
}

.financing {
    padding: 70px 5%;
    background: #14283d;
    color: white;
}

.financing h2 {
    font-size: clamp(2rem, 7vw, 4rem);
}

.financing a,
.final-cta a {
    display: inline-block;
    margin-top: 25px;
    background: #e87529;
    padding: 16px 30px;
    color: white;
}

.review-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.review-grid article {
    background: white;
    padding: 30px;
}

.faq article {
    background: white;
    padding: 25px;
    margin-bottom: 15px;
}

.final-cta {
    padding: 80px 5%;
    background: #e87529;
    color: white;
    text-align: center;
}

.final-cta h2 {
    font-size: clamp(2.2rem, 8vw, 5rem);
}

@media (min-width: 700px) {

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

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

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

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

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

}

@media (min-width: 1100px) {

    .site-header {
        padding: 30px 6%;
    }

    .menu-toggle {
        display: none;
    }

    .main-nav {
        display: flex;
        width: auto;
        flex-direction: row;
        padding: 0;
        gap: 25px;
    }

    .hero {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .hero-content {
        padding: 100px 8%;
    }

    .stats {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .service-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .service-feature {
        display: grid;
        grid-template-columns: 1fr 1fr;
        padding: 120px 6%;
    }

    .team {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .trust-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .membership-grid {
        grid-template-columns: repeat(4, 1fr);
    }

}