:root {
    --bg-main: #f4efe3;
    --surface: #fff7ec;
    --surface-strong: #fffaf0;
    --text-main: #241b11;
    --text-soft: #5d4a37;
    --text-muted: #7a6853;
    --accent: #2c8b4b;
    --accent-hover: #236f3c;
    --accent-warm: #efde9f;
    --accent-cool: #d8ecd8;
    --line: rgba(36, 27, 17, 0.18);
    --shadow: 0 18px 45px rgba(21, 14, 8, 0.2);
    --page-bg-image: url("./background.png");
}

body.dark {
    --bg-main: #11151a;
    --surface: #161d24;
    --surface-strong: #1a2129;
    --text-main: #ebf2f8;
    --text-soft: #97a8b9;
    --text-muted: #7f93a7;
    --accent: #46be72;
    --accent-hover: #37a55f;
    --accent-warm: #4f4731;
    --accent-cool: #23372c;
    --line: rgba(235, 242, 248, 0.2);
    --shadow: 0 20px 44px rgba(2, 4, 8, 0.45);
}

* {
    box-sizing: border-box;
}

*::-webkit-scrollbar {
    display: none;
}

html,
body {
    margin: 0;
    min-height: 100%;
    scrollbar-width: none;
    -ms-overflow-style: none;
    color: var(--text-main);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-main);
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    display: none;
}

body {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
    background-image: var(--page-bg-image);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: scroll;
    transition: color 0.25s ease, background-color 0.25s ease;
}

.bg-overlay {
    position: fixed;
    inset: -2px;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(circle at 18% 18%, rgba(250, 222, 160, 0.36), transparent 45%),
        linear-gradient(135deg, rgba(21, 16, 10, 0.58), rgba(16, 14, 20, 0.48));
}

.navbar {
    margin: 1.2rem auto 0;
    width: min(96%, 1050px);
    padding: 0.75rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: linear-gradient(135deg, var(--accent-warm), var(--accent-cool) 42%, var(--surface) 100%);
    backdrop-filter: blur(6px);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
}

.nav-links {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 0.6rem;
    flex-wrap: wrap;
}

button {
    border: 1px solid var(--line);
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface-strong) 86%, #ffffff 14%), var(--surface-strong));
    color: var(--text-main);
    border-radius: 10px;
    padding: 0.65rem 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.15s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(21, 14, 8, 0.12);
}

button:active {
    transform: translateY(1px);
}

.btn-dark {
    width: 46px;
    padding: 0.62rem 0;
    font-size: 1rem;
    flex: 0 0 auto;
    margin-left: auto;
}

.head {
    width: min(96%, 1050px);
    margin: 1.25rem auto 0;
    padding: 1.4rem 1.2rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--accent-warm) 40%, var(--surface) 60%), color-mix(in srgb, var(--accent-cool) 28%, var(--surface) 72%) 38%, var(--surface) 100%);
    backdrop-filter: blur(4px);
    box-shadow: var(--shadow);
    text-align: center;
}

.head h1 {
    margin: 0;
    font-size: clamp(1.6rem, 3.7vw, 2.3rem);
    color: color-mix(in srgb, var(--text-main) 90%, var(--accent) 10%);
}

.head p {
    margin: 0.5rem auto 0;
    color: var(--text-soft);
    max-width: 38rem;
}

.footer {
    width: min(96%, 1050px);
    margin: 1.1rem auto 1.2rem;
    padding: 0.8rem 0.95rem;
    border-radius: 13px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, color-mix(in srgb, var(--accent-cool) 24%, var(--surface) 76%), color-mix(in srgb, var(--accent-warm) 18%, var(--surface) 82%));
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    gap: 0.7rem;
    flex-wrap: wrap;
}

.footer p {
    margin: 0;
    color: var(--text-soft);
}

@media (max-width: 640px) {
    .navbar,
    .head,
    .footer {
        width: min(94%, 1050px);
    }

    .head {
        padding: 1.15rem 0.95rem;
    }
}