@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

:root {
    --bg-img: url("Background.jpg");
    --text: #fff;
    --surface: rgba(255, 255, 255, 0.06);
    --stroke: rgba(255, 255, 255, 0.12);
    --maxw: 1600px;
}

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

body {
    font-family: "Inter", sans-serif;
    background:
        radial-gradient(
            1200px 600px at 80% -10%,
            rgba(255, 255, 255, 0.25),
            transparent 60%
        ),
        linear-gradient(180deg, rgba(11, 14, 19, 0.4), rgba(11, 14, 19, 0.85)),
        var(--bg-img) center/cover no-repeat fixed;
    min-height: 100vh;
    color: var(--text);
    line-height: 1.45;
    overflow: hidden;
}

.nav {
    position: sticky;
    top: 0;
    background: linear-gradient(
        180deg,
        rgba(8, 10, 14, 0.55),
        rgba(8, 10, 14, 0.35)
    );
    padding: clamp(0.5rem, 1vw + 0.2rem, 1rem) clamp(1rem, 2vw + 0.5rem, 3rem);
    border-bottom: 1px solid var(--stroke);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.nav-inner {
    max-width: var(--maxw);
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-img {
    width: clamp(100px, 20vw, 200px);
    height: auto;
}

.menu {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 1vw, 1.5rem);
    list-style: none;
}

.menu a {
    text-decoration: none;
    padding: 0.5rem 0.75rem 0.2rem 0.75rem;
    font-size: clamp(0.9rem, 0.9vw, 1.05rem);
    font-weight: 500;
    color: var(--text);
    transition: 0.2s;
}

/* Modified */
.menu a {
    /* border: none; */
    position: relative;
    display: inline-block;
}
.menu a::after {
    content: ""; position: absolute; bottom: 0; left: 11%;
    width: 80%; height: 2px; background: var(--text);
    transform: scaleX(0);
    transform-origin: center;
    transition: all 0.3s ease;
}
.menu a:hover::after {
    transform: scaleX(1);
}
/* Modified */

.menu a:hover {
    text-shadow: 0 0 10px var(--text);
}

.search {
    position: relative;
}

.search input {
    width: 100%;
    padding: 0.6rem 2.5rem 0.6rem 0.75rem;
    font-size: 0.8rem;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--stroke);
    border-radius: 12px;
    outline: none;
}

.search input::placeholder {
    color: #b6c0c9;
}

.search button {
    position: absolute;
    right: 0.6rem;
    top: 60%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    color: var(--text);
}

.search svg {
    width: clamp(18px, 2vw, 24px);
    height: clamp(18px, 2vw, 24px);
    opacity: 0.8;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--text);
    border: none;
    outline: none;
    border-radius: 12px;
    transition:
        transform 0.15s,
        box-shadow 0.2s;
}

.nav-btn .btn {
    padding: 0.6rem 1rem;
    font-size: clamp(0.9rem, 0.9vw, 1rem);
    font-weight: 700;
    color: #111;
    cursor: pointer;
    text-decoration: none;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px -8px rgba(255, 255, 255, 0.55);
}

.menu-toggle {
    display: none;
}

.hamburger {
    display: none;
    width: clamp(40px, 6vw, 45px);
    height: clamp(40px, 6vw, 45px);
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    cursor: pointer;
}

.hamburger span,
.hamburger span::before,
.hamburger span::after {
    display: block;
    width: 10px;
    height: 2px;
    background: #fff;
    position: relative;
    content: "";
    transition:
        transform 0.25s ease,
        top 0.2s ease,
        background 0.25s ease;
    transform-origin: center;
}

.hamburger span::before {
    position: absolute;
    top: -6px;
}

.hamburger span:after {
    position: absolute;
    top: 6px;
}

@media (max-width: 600px) {
    .menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        background: rgba(8, 10, 14, 0.9);
        backdrop-filter: blur(12px);
        max-height: 0;
        padding: 0;
        opacity: 0;
        pointer-events: none;
        overflow: hidden;
        transition:
            max-height 0.4s ease,
            opacity 0.4s ease,
            padding 0.4s ease;
    }

    .menu li {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 90%;
        border-bottom: 1px solid #b6c0c9;
    }

    .menu li a {
        padding: 10px 0;
    }

    .menu .search,
    .menu .nav-btn {
        width: 90%;
        margin-top: 1rem;
    }

    .menu-toggle:checked ~ .menu {
        max-height: 100vh;
        height: 100vh;
        padding: 1.5rem 0;
        opacity: 1;
        pointer-events: auto;
    }

    .hamburger {
        display: flex;
    }

    .menu-toggle:checked ~ .hamburger span {
        background: transparent;
    }

    .menu-toggle:checked ~ .hamburger span::before {
        top: 0;
        transform: rotate(45deg);
    }

    .menu-toggle:checked ~ .hamburger span::after {
        top: 0;
        transform: rotate(-45deg);
    }
}

.hero {
    display: flex;
    justify-content: center;
    /* align-items: center; */
    margin-top: 20vh;
    min-height: 100vh; /* 佔滿整個螢幕高度 */
    color: #fff;
    font-family: "Inter";
    text-align: center;
    padding: 0 20px;
}

.hero-inner h1 {
    margin-bottom: 1rem;
}

.hero-inner p {
    margin-bottom: 2rem;
    opacity: 0.8;
}

.hero-btns {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.btn_cta {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    color: #fff;
    position: relative; /* 配合 top 屬性位移 */
    white-space: nowrap; /* 確保手機版文字不換行 */
    width: 30vw; /* 寬度佔視窗 30% */
    max-width: 220px; /* 避免在大螢幕上過寬 */
    min-width: 120px; /* 避免在極小螢幕縮得太小 */
    border: 1px solid #fff; /* 1px 白色實線邊框 */
    border-radius: 12px;
    padding: 14px 0; /* 上下內距 */

    /* 你要求的過渡效果 (修正單位錯誤) */
    transition:
        transform 0.25s ease,
        top 0.2s ease,
        background 0.25s ease;
}

.btn_cta:hover {
    background: rgba(255, 255, 255, 0.15); /* 輕微變亮 */
    transform: scale(1.05); /* 微微放大 */
    top: -3px; /* 向上微移 */
}

@media (max-width: 600px) {
    .btn-cta {
        font-size: 14px;
        padding: 10px 0;
    }
}