/* ==========================
   RESET
========================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background: #0d0d0d;
    color: #ffffff;
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.8;
    overflow-x: hidden;
}

/* ==========================
   COMMON
========================== */

.container {
    width: min(92%, 1200px);
    margin: 0 auto;
}

section {
    padding: clamp(90px, 10vw, 120px) 0;
}

h2 {
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    letter-spacing: 0.3em;
    margin-bottom: 60px;
}

p {
    color: #cfcfcf;
}

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

/* ==========================
   HEADER
========================== */

.header {

    position: fixed;
    top: 0;
    left: 0;

    width: 100%;

    z-index: 9999;

    background: rgba(13,13,13,.85);

    backdrop-filter: blur(12px);

    border-bottom: 1px solid rgba(255,255,255,.08);

    opacity: 0;
    transform: translateY(-100%);

    transition: .4s;

}

.header.show {

    opacity: 1;
    transform: translateY(0);

}

.header-inner {

    height: 80px;

    display: flex;
    justify-content: space-between;
    align-items: center;

}

.header-logo {

    font-family: 'Montserrat', sans-serif;
    font-size: 24px;
    font-weight: 700;

    letter-spacing: .2em;

}

.nav {

    display: flex;
    gap: 40px;

}

.nav a {

    font-family: 'Montserrat', sans-serif;

    font-size: 14px;

    letter-spacing: .15em;

    transition: .3s;

}

.nav a:hover {

    color: #c9a76b;

}

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

.hero {

    min-height: 100svh;

    display: flex;
    align-items: center;
    justify-content: center;

    text-align: center;

    background:
        radial-gradient(
            circle at center,
            rgba(255,255,255,.04),
            transparent 60%
        ),
        #0d0d0d;

}

.logo {

    width: clamp(180px, 22vw, 280px);

    margin-bottom: 40px;

}

.hero h1 {

    font-family: 'Montserrat', sans-serif;

    font-size: clamp(2rem,6vw,4.5rem);

    font-weight: 700;

    line-height: 1.3;

    letter-spacing: .15em;

    margin-bottom: 20px;

}

.tagline {

    color: #c9a76b;

    font-size: clamp(1rem,2vw,1.3rem);

    margin-bottom: 30px;

    font-family: 'Montserrat';

}

.hero-text {

    max-width: 700px;

    margin: auto;

    font-size: clamp(1rem,2vw,1.1rem);

}

/* ==========================
   ABOUT
========================== */

.about {

    background: #141414;

}

.about-text {

    max-width: 800px;

    margin: auto;

    text-align: center;

}

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

.service-grid {

    display: grid;

    grid-template-columns: repeat(3,1fr);

    gap: 30px;

}

.card {

    background: #171717;

    padding: 40px 30px;

    border: 1px solid rgba(255,255,255,.08);

    transition: .3s;

}

.card:hover {

    transform: translateY(-6px);

    border-color: #c9a76b;

}

.card h3 {

    font-family: 'Montserrat';

    font-size: 1.2rem;

    margin-bottom: 20px;

    letter-spacing: .15em;

}

.card p {

    color: #bdbdbd;

}

/* ==========================
   CONTACT
========================== */

.contact {

    background: #141414;

}

form {

    max-width: 700px;

    margin: auto;

}

input,
textarea {

    width: 100%;

    padding: 18px;

    margin-bottom: 20px;

    background: #1b1b1b;

    border: 1px solid transparent;

    color: #fff;

    font-size: 16px;

    transition: .3s;

}

input:focus,
textarea:focus {

    outline: none;

    border-color: #c9a76b;

}

textarea {

    min-height: 180px;

    resize: vertical;

}

button {

    width: 100%;

    padding: 18px;

    border: none;

    background: #c9a76b;

    color: #000;

    font-weight: bold;

    cursor: pointer;

    transition: .3s;

}

button:hover {

    opacity: .9;

}

/* ==========================
   FOOTER
========================== */

footer {

    padding: 40px 20px;

    text-align: center;

    color: #666;

    font-size: 14px;

}

/* ==========================
   TABLET
========================== */

@media (max-width:1024px){

    .service-grid {

        grid-template-columns: 1fr;

        max-width: 700px;

        margin: auto;

    }

}

/* ==========================
   MOBILE
========================== */

@media (max-width:768px){

    .header-inner {

        height: 70px;

        flex-direction: column;

        justify-content: center;

        gap: 10px;

    }

    .nav {

        gap: 20px;

    }

    .nav a {

        font-size: 12px;

    }

    .hero {

        min-height: auto;

        padding: 120px 0 100px;

    }

    .hero h1 {

        letter-spacing: .08em;

    }

}

/* ==========================
   SMALL MOBILE
========================== */

@media (max-width:480px){

    .container {

        width: 90%;

    }

    .card {

        padding: 30px 20px;

    }

}