:root {
    --black: #08100d;
    --black-soft: #101a16;
    --green: #9bdc28;
    --green-dark: #6fa817;
    --white: #ffffff;
    --gray: #a8b0ab;
    --gray-light: #eef2ef;
    --border: rgba(255, 255, 255, 0.12);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius: 20px;
}


/* ==============================
   RESET
============================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
}

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

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

button,
input,
select {
    font: inherit;
}


/* ==============================
   CONTAINER
============================== */

.container {
    width: min(1180px, 90%);
    margin: 0 auto;
}


/* ==============================
   HEADER
============================== */

.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    color: var(--white);
}

.nav {
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.logo span {
    color: var(--green);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    transition: 0.3s ease;
}

.nav-menu a:hover {
    color: var(--green);
}

.nav-button {
    padding: 12px 20px;
    border: 1px solid var(--green);
    border-radius: 50px;
    color: var(--green);
    font-size: 0.9rem;
    font-weight: 700;
    transition: 0.3s ease;
}

.nav-button:hover {
    background: var(--green);
    color: var(--black);
}


/* ==============================
   BUTTONS
============================== */

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 52px;
    padding: 0 25px;
    border-radius: 50px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: 0.3s ease;
}

.btn-primary {
    background: var(--green);
    color: var(--black);
}

.btn-primary:hover {
    background: var(--white);
    transform: translateY(-2px);
}

.btn-secondary {
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.45);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--black);
}


/* ==============================
   HERO
============================== */

.hero {
    min-height: 90vh;
    position: relative;
    display: flex;
    align-items: center;
    background-image: url("../images/hero.jpg");
    background-size: cover;
    background-position: center;
    color: var(--white);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            90deg,
            rgba(0, 0, 0, 0.78) 0%,
            rgba(0, 0, 0, 0.5) 55%,
            rgba(0, 0, 0, 0.2) 100%
        );
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-top: 80px;
    max-width: 800px;
}

.hero-tag,
.section-heading > span,
.benefits-content > span,
.installation-content > span,
.contact-content > span {
    display: inline-block;
    color: var(--green);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 18px;
}

.hero h1 {
    max-width: 760px;
    font-size: clamp(3rem, 6vw, 5.6rem);
    line-height: 1.02;
    letter-spacing: -3px;
    margin-bottom: 25px;
}

.hero p {
    max-width: 650px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.15rem;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}


/* ==============================
   SECTION HEADING
============================== */

.section-heading {
    max-width: 720px;
    margin-bottom: 55px;
}

.section-heading h2,
.benefits-content h2,
.installation-content h2,
.contact-content h2 {
    font-size: clamp(2.2rem, 4vw, 3.8rem);
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 18px;
}

.section-heading p,
.benefits-content > p,
.installation-content > p,
.contact-content > p {
    color: #68716c;
    font-size: 1.05rem;
}


/* ==============================
   CALCULATOR
============================== */

.calculator-section {
    padding: 120px 0;
    background: var(--gray-light);
}

.calculator {
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--black);
    color: var(--white);
    box-shadow: var(--shadow);
}

.calculator-content {
    padding: 55px;
}

.calculator-content h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.calculator-content > p {
    color: var(--gray);
    margin-bottom: 35px;
}

.calculator-content label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 700;
}

.input-money {
    display: flex;
    align-items: center;
    background: #18231e;
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 22px;
}

.input-money span {
    padding-left: 18px;
    color: var(--green);
    font-weight: 700;
}

.input-money input,
.calculator-content select {
    width: 100%;
    height: 52px;
    padding: 0 15px;
    background: #18231e;
    color: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    outline: none;
}

.input-money input {
    border: none;
}

.calculator-content select {
    margin-bottom: 22px;
}

.input-money:focus-within,
.calculator-content select:focus {
    border-color: var(--green);
}

.calculator-content .btn {
    width: 100%;
    margin-top: 8px;
}

.calculator-result {
    min-height: 100%;
    padding: 55px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    background:
        linear-gradient(
            145deg,
            #18251e,
            #0c130f
        );
}

.result-icon {
    width: 65px;
    height: 65px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(155, 220, 40, 0.12);
    color: var(--green);
    font-size: 1.8rem;
    margin-bottom: 25px;
}

.calculator-result h3 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.calculator-result p {
    color: var(--gray);
}


/* ==============================
   SOLUTIONS
============================== */

.solutions-section {
    padding: 120px 0;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.solution-card {
    overflow: hidden;
    border-radius: var(--radius);
    background: #f5f7f5;
    transition: 0.35s ease;
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
}

.solution-image {
    height: 360px;
    overflow: hidden;
}

.solution-image img {
    height: 100%;
    object-fit: cover;
    transition: 0.5s ease;
}

.solution-card:hover .solution-image img {
    transform: scale(1.04);
}

.solution-content {
    padding: 35px;
}

.solution-number {
    color: var(--green-dark);
    font-size: 0.8rem;
    font-weight: 800;
}

.solution-content h3 {
    font-size: 2rem;
    margin: 10px 0;
}

.solution-content p {
    color: #68716c;
    margin-bottom: 22px;
}

.solution-content a {
    color: var(--green-dark);
    font-weight: 800;
}


/* ==============================
   BENEFITS
============================== */

.benefits-section {
    padding: 120px 0;
    background: var(--black);
    color: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.benefits-image {
    height: 600px;
    border-radius: var(--radius);
    overflow: hidden;
}

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

.benefits-content > p {
    color: var(--gray);
    margin-bottom: 40px;
}

.benefit-list {
    display: grid;
    gap: 25px;
}

.benefit-item {
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border);
}

.benefit-item strong {
    display: block;
    font-size: 1.15rem;
    margin-bottom: 5px;
}

.benefit-item span {
    color: var(--gray);
}


/* ==============================
   PROCESS
============================== */

.process-section {
    padding: 120px 0;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.process-item {
    padding: 35px 0;
    border-top: 2px solid var(--black);
}

.process-item > span {
    color: var(--green-dark);
    font-size: 0.8rem;
    font-weight: 800;
}

.process-item h3 {
    font-size: 1.6rem;
    margin: 18px 0 10px;
}

.process-item p {
    color: #68716c;
}


/* ==============================
   INSTALLATION
============================== */

.installation-section {
    padding: 120px 0;
    background: #f1f4f1;
}

.installation-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 70px;
    align-items: center;
}

.installation-content p {
    margin-bottom: 30px;
}

.installation-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.installation-images img {
    height: 430px;
    object-fit: cover;
    border-radius: var(--radius);
}

.installation-images img:last-child {
    margin-top: 70px;
}


/* ==============================
   CONTACT
============================== */

.contact-section {
    padding: 130px 0;
    background:
        linear-gradient(
            135deg,
            #17231d,
            #07100c
        );
    color: var(--white);
}

.contact-content {
    max-width: 780px;
    text-align: center;
}

.contact-content h2 {
    margin-bottom: 20px;
}

.contact-content p {
    color: var(--gray);
    margin-bottom: 35px;
}


/* ==============================
   FOOTER
============================== */

.footer {
    padding: 40px 0;
    background: #050907;
    color: var(--gray);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
}

.footer-logo {
    color: var(--white);
    font-weight: 800;
    letter-spacing: 2px;
}

.footer p {
    font-size: 0.9rem;
}

.footer span {
    font-size: 0.8rem;
}


/* ==============================
   RESPONSIVE
============================== */

@media (max-width: 900px) {

    .nav-menu {
        display: none;
    }

    .calculator,
    .benefits-grid,
    .installation-grid {
        grid-template-columns: 1fr;
    }

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

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

    .benefits-image {
        height: 450px;
    }

    .installation-images img {
        height: 350px;
    }

    .installation-images img:last-child {
        margin-top: 40px;
    }

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


@media (max-width: 600px) {

    .container {
        width: min(92%, 1180px);
    }

    .nav {
        min-height: 75px;
    }

    .nav-button {
        display: none;
    }

    .hero {
        min-height: 780px;
    }

    .hero h1 {
        font-size: 3.1rem;
        letter-spacing: -2px;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .calculator-section,
    .solutions-section,
    .benefits-section,
    .process-section,
    .installation-section {
        padding: 85px 0;
    }

    .calculator-content,
    .calculator-result {
        padding: 35px 25px;
    }

    .solution-image {
        height: 280px;
    }

    .benefits-image {
        height: 350px;
    }

    .installation-images {
        grid-template-columns: 1fr;
    }

    .installation-images img {
        height: 300px;
    }

    .installation-images img:last-child {
        margin-top: 0;
    }

    .contact-section {
        padding: 90px 0;
    }
}
/* ==============================
   CALCULATOR RESULT
============================== */

.result-number {
    margin-top: 20px;
    color: var(--green);
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    line-height: 1;
    font-weight: 800;
    letter-spacing: -2px;
}

.result-period {
    display: block;
    margin-top: 8px;
    color: var(--gray);
    font-size: 0.9rem;
}

.result-detail {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 35px;
}

.result-detail > div {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
}

.result-detail strong {
    display: block;
    color: var(--white);
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.result-detail span {
    display: block;
    color: var(--gray);
    font-size: 0.78rem;
    line-height: 1.4;
}

.calculator-result small {
    display: block;
    margin-top: 25px;
    color: #7f8983;
    font-size: 0.72rem;
    line-height: 1.5;
}


/* ==============================
   CALCULATOR RESULT MOBILE
============================== */

@media (max-width: 600px) {

    .result-number {
        font-size: 3rem;
    }

    .result-detail {
        grid-template-columns: 1fr;
    }

}
.result-whatsapp {
    margin-top: 25px;
}
/* ==============================
   HERO TRUST
============================== */

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 28px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.82rem;
}

.hero-trust span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

@media (max-width: 600px) {

    .hero-trust {
        flex-direction: column;
        gap: 10px;
    }

}
/* ==============================
   SOLUTION FEATURES
============================== */

.solution-features {
    list-style: none;
    display: grid;
    gap: 9px;
    margin: 0 0 25px;
    padding: 0;
}

.solution-features li {
    color: #56605a;
    font-size: 0.88rem;
}

.solution-features li::first-letter {
    color: var(--green-dark);
}
/* ==============================
   PREMIUM MICRO ANIMATIONS
============================== */

.solution-card,
.process-item,
.benefit-item {
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
}

.process-item:hover {
    transform: translateY(-5px);
}

.benefit-item:hover {
    transform: translateX(5px);
}

.hero-content {
    animation: heroFade 0.9s ease forwards;
}

@keyframes heroFade {

    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

}
/* ==============================
   WHATSAPP CTA
============================== */

#whatsapp-btn {
    box-shadow: 0 10px 30px rgba(155, 220, 40, 0.18);
}

#whatsapp-btn:hover {
    box-shadow: 0 15px 40px rgba(155, 220, 40, 0.28);
}
/* ==============================
   MOBILE POLISH
============================== */

@media (max-width: 600px) {

    .section-heading {
        margin-bottom: 40px;
    }

    .section-heading h2,
    .benefits-content h2,
    .installation-content h2,
    .contact-content h2 {
        font-size: 2.35rem;
    }

    .calculator-result h3 {
        font-size: 1.7rem;
    }

    .result-whatsapp {
        width: 100%;
        text-align: center;
    }

    .contact-content .btn {
        width: 100%;
    }

}