/* =========================================
   GOOGLE FONT
========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');



/* =========================================
   GLOBAL
========================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: #f5f7fb;
    color: #1d2736;
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    width: 100%;
    display: block;
    object-fit: cover;
}

section {
    padding: 110px 8%;
}

h1,
h2,
h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

h1 {
    font-size: 4rem;
    font-weight: 800;
}

h2 {
    font-size: 2.7rem;
    font-weight: 750;
}

h3 {
    font-size: 1.2rem;
    font-weight: 650;
}

p {
    color: #556070;
    font-size: 1rem;
}

.section-label {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 999px;
    background: #e8eefb;
    color: #2757c8;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    margin-bottom: 24px;
}



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

.ista-hero {
    min-height: 95vh;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    align-items: center;
    gap: 70px;
    background:
        linear-gradient(to right,
            rgba(245, 247, 251, 0.97),
            rgba(245, 247, 251, 0.92)),
        url('../images/grid-pattern.png');
}

.hero-tag {
    font-size: 0.95rem;
    font-weight: 600;
    color: #2757c8;
    margin-bottom: 22px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero-line {
    width: 110px;
    height: 5px;
    border-radius: 999px;
    background: #2757c8;
    margin: 35px 0;
}

.hero-description {
    max-width: 640px;
    font-size: 1.08rem;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-top: 45px;
}

.hero-btn {
    padding: 16px 34px;
    border-radius: 18px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.35s ease;
}

.primary-btn {
    background: #2757c8;
    color: white;
    box-shadow: 0 10px 30px rgba(39, 87, 200, 0.25);
}

.primary-btn:hover {
    transform: translateY(-4px);
    background: #1e46a7;
}

.secondary-btn {
    border: 1px solid #d6dce8;
    background: white;
    color: #243041;
}

.secondary-btn:hover {
    transform: translateY(-4px);
    border-color: #2757c8;
    color: #2757c8;
}

.hero-right img {
    border-radius: 34px;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.12);
}



/* =========================================
   INTRO
========================================= */

.intro-section {
    background: white;
    border-radius: 40px;
    margin: 0 5%;
    margin-top: -60px;
    position: relative;
    z-index: 2;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.06);
}

.intro-top {
    margin-bottom: 55px;
    max-width: 850px;
}

.intro-bottom {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
}

.intro-bottom p {
    background: #f7f9fc;
    padding: 35px;
    border-radius: 28px;
    transition: 0.35s ease;
}

.intro-bottom p:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.07);
}



/* =========================================
   SERVICES
========================================= */

.services-section {
    background: #f5f7fb;
}

.services-header {
    text-align: center;
    max-width: 900px;
    margin: auto;
    margin-bottom: 70px;
}

.services-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.service-row {
    background: white;
    padding: 30px;
    border-radius: 24px;
    font-weight: 550;
    color: #243041;
    transition: 0.35s ease;
    border: 1px solid #edf1f7;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.service-row:hover {
    transform: translateY(-6px);
    background: #2757c8;
    color: white;
}



/* =========================================
   FEATURE SECTION
========================================= */

.feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
    background: white;
}

.feature-image img {
    height: 600px;
    border-radius: 34px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.08);
}

.feature-content p {
    margin-top: 30px;
}



/* =========================================
   EQUIPMENT
========================================= */

.equipment-header {
    text-align: center;
    max-width: 850px;
    margin: auto;
    margin-bottom: 75px;
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.equipment-card {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    height: 420px;

    transition: 0.4s ease;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);

    background: transparent;
}

.equipment-card:hover {
    transform: translateY(-8px);
}



/* IMAGE */

.equipment-card img {
    width: 100%;
    height: 100%;

    object-fit: cover;

    border-radius: 32px;

    transition: 0.5s ease;
}

/* OVERLAY */

.equipment-card::before {
    content: "";
    position: absolute;
    inset: 0;

    border-radius: 32px;

    background: linear-gradient(to top,
            rgba(0, 0, 0, 0.72) 0%,
            rgba(0, 0, 0, 0.15) 40%,
            rgba(0, 0, 0, 0) 65%);

    z-index: 1;
}



/* TEXT */

.equipment-info {
    position: absolute;
    left: 0;
    bottom: 0;

    width: 100%;
    padding: 24px;

    z-index: 2;
}

.equipment-info h3 {
    color: white;

    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.2;

    max-width: 75%;
}



/* =========================================
   RELIABILITY SECTION
========================================= */

.reliability-section {
    width: 100%;
    padding: 120px 8%;
    background: #f7f9fc;

    display: flex;
    gap: 60px;
    align-items: flex-start;
}

.reliability-left {
    flex: 1;
}

.reliability-left h2 {
    font-size: 42px;
    line-height: 1.2;
    font-weight: 700;
    color: #111;
    max-width: 500px;
}

.reliability-right {
    flex: 1.2;
}

/* GRID */

.reliability-grid {
    display: grid;

    grid-template-columns: repeat(2, 1fr);

    gap: 20px;
}

/* CARD */

.reliability-item {
    background: white;

    padding: 28px;

    border-radius: 18px;

    border: 1px solid #e5e7eb;

    transition: 0.3s ease;
}

.reliability-item:hover {
    transform: translateY(-4px);

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.reliability-item h3 {
    font-size: 18px;

    font-weight: 700;

    color: #0f172a;

    margin-bottom: 10px;
}

.reliability-item p {
    font-size: 15px;

    line-height: 1.6;

    color: #475569;
}

/* RESPONSIVE */

@media (max-width: 900px) {

    .reliability-section {
        flex-direction: column;
    }

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

}


/* =========================================
   FINAL CTA
========================================= */

.final-section {
    background:
        linear-gradient(135deg,
            #1f4db5,
            #2f6ef0);

    border-radius: 40px;
    margin: 0 5% 100px;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-section::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    top: -180px;
    right: -100px;
}

.final-content {
    max-width: 850px;
    margin: auto;
    position: relative;
    z-index: 2;
}

.final-content .section-label {
    background: rgba(255, 255, 255, 0.14);
    color: white;
}

.final-content h2,
.final-content p {
    color: white;
}

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

@media(max-width:1200px) {

    h1 {
        font-size: 3.2rem;
    }

    h2 {
        font-size: 2.2rem;
    }

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

    .intro-bottom {
        grid-template-columns: 1fr;
    }
}



@media(max-width:900px) {

    section {
        padding: 90px 7%;
    }

    .ista-hero,
    .feature-section,
    .reliability-section {
        grid-template-columns: 1fr;
    }

    .hero-right {
        order: -1;
    }

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

    .navbar {
        flex-direction: column;
        gap: 20px;
    }

    .nav-links {
        gap: 22px;
        flex-wrap: wrap;
        justify-content: center;
    }

    h1 {
        font-size: 2.7rem;
    }

    h2 {
        font-size: 2rem;
    }

    .feature-image img {
        height: auto;
    }
}



@media(max-width:600px) {

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

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

    .intro-section,
    .final-section {
        margin-left: 3%;
        margin-right: 3%;
    }

    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.7rem;
    }
}