:root {
    --color-primary: #0d4f78;
    --color-primary-dark: #083a59;
    --color-primary-light: #eaf4fa;

    --color-accent: #ef7622;
    --color-accent-dark: #cf5d12;

    --color-green: #26824a;
    --color-red: #b21f2d;

    --color-text: #27313a;
    --color-text-light: #66717c;

    --color-white: #ffffff;
    --color-background: #f6f8fa;
    --color-border: #dfe5e9;

    --shadow-small: 0 10px 30px rgba(19, 45, 64, 0.08);
    --shadow-medium: 0 20px 50px rgba(19, 45, 64, 0.14);

    --radius-small: 10px;
    --radius-medium: 18px;
    --radius-large: 28px;

    --container-width: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", sans-serif;
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.7;
}

body.menu-open {
    overflow: hidden;
}

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

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

button,
input,
select,
textarea {
    font: inherit;
}

button {
    border: none;
    cursor: pointer;
}

.container {
    width: min(100% - 40px, var(--container-width));
    margin-inline: auto;
}

.section {
    padding: 100px 0;
}

.section-label {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 55px;
    text-align: center;
}

.section-heading h2,
.about-content h2,
.contact-information h2 {
    margin-bottom: 20px;
    font-family: "Montserrat", sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
}

.section-heading p,
.about-content p,
.contact-information p {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 12px 24px;
    border: 2px solid transparent;
    border-radius: 999px;
    font-weight: 700;
    transition:
        transform 0.25s ease,
        background-color 0.25s ease,
        color 0.25s ease,
        border-color 0.25s ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button-primary {
    color: var(--color-white);
    background-color: var(--color-accent);
}

.button-primary:hover {
    background-color: var(--color-accent-dark);
}

.button-secondary {
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.6);
    background-color: rgba(255, 255, 255, 0.08);
}

.button-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary-dark);
}

.button-full {
    width: 100%;
}

.header {
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid rgba(13, 79, 120, 0.08);
    backdrop-filter: blur(12px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 82px;
}

.logo {
    width: 98px;
    max-height: 68px;
    object-fit: contain;
}

.navigation {
    display: flex;
    align-items: center;
    gap: 28px;
}

.navigation > a:not(.button) {
    position: relative;
    font-weight: 600;
}

.navigation > a:not(.button)::after {
    position: absolute;
    bottom: -7px;
    left: 0;
    width: 0;
    height: 2px;
    content: "";
    background-color: var(--color-accent);
    transition: width 0.25s ease;
}

.navigation > a:not(.button):hover::after {
    width: 100%;
}

.button-header {
    min-height: 44px;
    padding: 9px 20px;
    color: var(--color-white);
    background-color: var(--color-primary);
}

.button-header:hover {
    background-color: var(--color-primary-dark);
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    background: transparent;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 6px 0;
    background-color: var(--color-primary-dark);
    transition: transform 0.25s ease;
}

.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 760px;
    padding-top: 100px;
    overflow: hidden;
    color: var(--color-white);
    background:
        linear-gradient(
            90deg,
            rgba(4, 41, 65, 0.96) 0%,
            rgba(7, 58, 88, 0.88) 52%,
            rgba(7, 58, 88, 0.35) 100%
        ),
        url("https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=1800&q=85")
        center / cover no-repeat;
}

.hero::after {
    position: absolute;
    right: -180px;
    bottom: -260px;
    width: 560px;
    height: 560px;
    content: "";
    border: 90px solid rgba(239, 118, 34, 0.16);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.hero-tag {
    display: inline-flex;
    margin-bottom: 24px;
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 999px;
    color: #ffd0ad;
    background-color: rgba(255, 255, 255, 0.08);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 760px;
    margin-bottom: 25px;
    font-family: "Montserrat", sans-serif;
    font-size: clamp(2.8rem, 6vw, 5.2rem);
    line-height: 1.02;
}

.hero p {
    max-width: 660px;
    margin-bottom: 36px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 1.14rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.services {
    background-color: var(--color-background);
}

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

.service-card {
    padding: 34px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background-color: var(--color-white);
    box-shadow: var(--shadow-small);
    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        border-color 0.25s ease;
}

.service-card:hover {
    transform: translateY(-7px);
    border-color: rgba(239, 118, 34, 0.45);
    box-shadow: var(--shadow-medium);
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 62px;
    height: 62px;
    margin-bottom: 24px;
    border-radius: 18px;
    color: var(--color-white);
    background:
        linear-gradient(
            135deg,
            var(--color-primary),
            var(--color-primary-dark)
        );
    font-family: "Montserrat", sans-serif;
    font-size: 0.85rem;
    font-weight: 800;
}

.service-card:nth-child(2) .service-icon,
.service-card:nth-child(6) .service-icon {
    background:
        linear-gradient(
            135deg,
            var(--color-accent),
            var(--color-accent-dark)
        );
}

.service-card:nth-child(3) .service-icon {
    background:
        linear-gradient(
            135deg,
            var(--color-green),
            #17653a
        );
}

.service-card:nth-child(5) .service-icon {
    background:
        linear-gradient(
            135deg,
            var(--color-red),
            #7c111e
        );
}

.service-card h3 {
    margin-bottom: 14px;
    font-family: "Montserrat", sans-serif;
    font-size: 1.25rem;
}

.service-card p {
    margin-bottom: 22px;
    color: var(--color-text-light);
}

.service-card a {
    color: var(--color-primary);
    font-weight: 700;
}

.service-card a:hover {
    color: var(--color-accent);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 70px;
}

.about-content p {
    margin-bottom: 18px;
}

.check-list {
    display: grid;
    gap: 13px;
    margin: 30px 0 34px;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 34px;
    font-weight: 600;
}

.check-list li::before {
    position: absolute;
    top: 1px;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    content: "✓";
    border-radius: 50%;
    color: var(--color-white);
    background-color: var(--color-green);
    font-size: 0.75rem;
}

.about-card {
    padding: 46px;
    border-radius: var(--radius-large);
    color: var(--color-white);
    background:
        linear-gradient(
            145deg,
            var(--color-primary),
            var(--color-primary-dark)
        );
    box-shadow: var(--shadow-medium);
}

.about-card-label {
    display: inline-block;
    margin-bottom: 18px;
    color: #ffbf8d;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.about-card h3 {
    margin-bottom: 18px;
    font-family: "Montserrat", sans-serif;
    font-size: 2rem;
    line-height: 1.2;
}

.about-card > p {
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.78);
}

.about-stat {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.about-stat strong {
    color: var(--color-accent);
    font-family: "Montserrat", sans-serif;
    font-size: 1.55rem;
}

.process {
    color: var(--color-white);
    background-color: var(--color-primary-dark);
}

.section-heading-light h2 {
    color: var(--color-white);
}

.section-heading-light p {
    color: rgba(255, 255, 255, 0.7);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.process-step {
    position: relative;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-medium);
    background-color: rgba(255, 255, 255, 0.05);
}

.process-step span {
    display: block;
    margin-bottom: 28px;
    color: var(--color-accent);
    font-family: "Montserrat", sans-serif;
    font-size: 2rem;
    font-weight: 800;
}

.process-step h3 {
    margin-bottom: 12px;
    font-family: "Montserrat", sans-serif;
}

.process-step p {
    color: rgba(255, 255, 255, 0.7);
}

.contact {
    background-color: var(--color-background);
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 70px;
}

.contact-information > p {
    margin-bottom: 38px;
}

.contact-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-item strong,
.contact-item span {
    display: block;
}

.contact-item strong {
    margin-bottom: 4px;
    color: var(--color-primary-dark);
}

.contact-item span {
    color: var(--color-text-light);
}

.contact-form {
    padding: 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    background-color: var(--color-white);
    box-shadow: var(--shadow-small);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 0.92rem;
    font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    outline: none;
    color: var(--color-text);
    background-color: var(--color-white);
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.form-group textarea {
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(13, 79, 120, 0.1);
}

.form-message {
    min-height: 24px;
    margin-top: 14px;
    color: var(--color-green);
    text-align: center;
    font-weight: 600;
}

.footer {
    padding-top: 70px;
    color: rgba(255, 255, 255, 0.78);
    background-color: #062d45;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 55px;
}

.footer-logo {
    width: 125px;
    margin-bottom: 20px;
    border-radius: 8px;
}

.footer h3 {
    margin-bottom: 18px;
    color: var(--color-white);
    font-family: "Montserrat", sans-serif;
    font-size: 1rem;
}

.footer a,
.footer p {
    display: block;
    margin-bottom: 10px;
}

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

.footer-bottom {
    padding: 22px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    text-align: center;
}

@media (max-width: 980px) {
    .navigation {
        position: fixed;
        top: 82px;
        right: 0;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        width: min(350px, 100%);
        height: calc(100vh - 82px);
        padding: 30px;
        background-color: var(--color-white);
        box-shadow: -20px 20px 40px rgba(0, 0, 0, 0.15);
        transform: translateX(110%);
        transition: transform 0.3s ease;
    }

    .navigation.active {
        transform: translateX(0);
    }

    .menu-toggle {
        display: block;
    }

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

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

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

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

@media (max-width: 650px) {
    .container {
        width: min(100% - 28px, var(--container-width));
    }

    .section {
        padding: 75px 0;
    }

    .header-container {
        min-height: 72px;
    }

    .navigation {
        top: 72px;
        height: calc(100vh - 72px);
    }

    .logo {
        width: 82px;
        max-height: 58px;
    }

    .hero {
        min-height: 690px;
        padding-top: 110px;
        background-position: 62% center;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

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

    .hero-buttons .button {
        width: 100%;
    }

    .services-grid,
    .process-grid,
    .footer-grid,
    .form-row {
        grid-template-columns: 1fr;
    }

    .service-card,
    .about-card,
    .contact-form {
        padding: 28px;
    }

    .footer-grid {
        gap: 30px;
    }
}