/* css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

@import "theme.css";
@import "layout.css";
@import "components.css";
@import "pages.css";

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

html {
    min-height: 100%;
    background: #172536;
}

body {
    font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--white);
    color: var(--dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

h1,
h2,
h3 {
    font-weight: 500;
    letter-spacing: -0.02em;
}

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

.scroll-top-btn {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border: none;
    border-radius: 999px;
    background: var(--green);
    color: var(--white);
    font-size: 1.35rem;
    line-height: 1;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.18);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, background 0.2s ease;
    z-index: 1000;
}

.scroll-top-btn:hover {
    background: var(--green-dark);
}

.scroll-top-btn.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 640px) {
    .scroll-top-btn {
        right: 16px;
        bottom: 16px;
        width: 42px;
        height: 42px;
    }
}