/* =========================
   RESET & BASE
========================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        "Noto Sans JP",
        sans-serif;
    background: #050505;
    color: #ffffff;
    overflow-x: hidden;
    line-height: 1.7;
}

/* =========================
   BACKGROUND
========================= */

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(0, 255, 200, 0.08), transparent 30%),
        radial-gradient(circle at 80% 60%, rgba(0, 100, 255, 0.08), transparent 35%),
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: auto, auto, 50px 50px, 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* =========================
   NAVIGATION
========================= */

header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.75);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    padding: 18px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 3px;
    color: #fff;
}

.logo span {
    color: #00f5c4;
}

nav ul {
    display: flex;
    gap: 28px;
    list-style: none;
}

nav a {
    color: #aaa;
    text-decoration: none;
    font-size: 14px;
    transition: 0.3s;
}

nav a:hover {
    color: #00f5c4;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 30px 80px;
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: auto;
}

.hero-tag {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid rgba(0,245,196,0.4);
    border-radius: 50px;
    color: #00f5c4;
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 25px;
    background: rgba(0,245,196,0.05);
}

.hero h1 {
    font-size: clamp(55px, 9vw, 120px);
    line-height: 1;
    letter-spacing: -4px;
    font-weight: 900;
    margin-bottom: 30px;
}

.hero h1 .gradient {
    background: linear-gradient(
        90deg,
        #ffffff,
        #00f5c4,
        #4d7cff
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text {
    max-width: 650px;
    color: #aaa;
    font-size: 18px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 28px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.btn-primary {
    background: #00f5c4;
    color: #000;
}

.btn-primary:hover {
    background: #fff;
    transform: translateY(-3px);
}

.btn-outline {
    border: 1px solid #444;
    color: #fff;
}

.btn-outline:hover {
    border-color: #00f5c4;
    color: #00f5c4;
}

/* =========================
   SECTION
========================= */

section {
    padding: 120px 30px;
}

.container {
    max-width: 1200px;
    margin: auto;
}

.section-label {
    color: #00f5c4;
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(38px, 5vw, 65px);
    margin-bottom: 60px;
    letter-spacing: -2px;
}

/* =========================
   PROFILE
========================= */

.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.profile-image {
    aspect-ratio: 1/1;
    background:
        linear-gradient(
            135deg,
            rgba(0,245,196,0.3),
            rgba(77,124,255,0.2)
        );
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    border-radius: 10px;
    overflow: hidden;
}

.profile-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.profile-content p {
    color: #aaa;
    margin-bottom: 20px;
}

.profile-info {
    margin-top: 30px;
}

.profile-info div {
    padding: 15px 0;
    border-bottom: 1px solid #222;
}

.profile-info span {
    color: #00f5c4;
    display: inline-block;
    width: 120px;
}

/* =========================
   WORKS
========================= */

.works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.work-card {
    position: relative;
    aspect-ratio: 16/10;
    background: #111;
    border: 1px solid #222;
    overflow: hidden;
    transition: 0.4s;
    cursor: pointer;
}

.work-card:hover {
    transform: translateY(-8px);
    border-color: #00f5c4;
}

.work-image {
    width: 100%;
    height: 100%;
    background:
        linear-gradient(
            135deg,
            rgba(0,245,196,0.2),
            rgba(77,124,255,0.2)
        );
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    transition: 0.4s;
}

.work-card:hover .work-image {
    transform: scale(1.08);
}

.work-overlay {
    position: absolute;
    inset: 0;
    padding: 25px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background:
        linear-gradient(
            transparent,
            rgba(0,0,0,0.95)
        );
}

.work-category {
    color: #00f5c4;
    font-size: 12px;
    letter-spacing: 2px;
}

.work-title {
    font-size: 20px;
    font-weight: bold;
}

/* =========================
   TOOLS
========================= */

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

.tool-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid #222;
    padding: 35px 25px;
    text-align: center;
    transition: 0.3s;
}

.tool-card:hover {
    border-color: #00f5c4;
    background: rgba(0,245,196,0.05);
}

.tool-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.tool-card h3 {
    font-size: 16px;
}

.tool-card p {
    color: #777;
    font-size: 13px;
    margin-top: 8px;
}

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

.contact-box {
    padding: 70px;
    border: 1px solid #222;
    background:
        linear-gradient(
            135deg,
            rgba(0,245,196,0.08),
            rgba(77,124,255,0.08)
        );
    text-align: center;
}

.contact-box h2 {
    font-size: clamp(35px, 5vw, 60px);
    margin-bottom: 20px;
}

.contact-box p {
    color: #aaa;
    margin-bottom: 35px;
}

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

footer {
    padding: 40px 30px;
    border-top: 1px solid #222;
    text-align: center;
    color: #666;
    font-size: 13px;
}

/* =========================
   ANIMATION
========================= */

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: 0.8s ease;
}

.fade-up.show {
    opacity: 1;
    transform: translateY(0);
}

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

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

@media (max-width: 900px) {

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

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

    .profile-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 700px) {

    .nav-container {
        padding: 15px 20px;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #080808;
        display: none;
        border-top: 1px solid #222;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        padding: 25px;
        gap: 20px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    section {
        padding: 80px 20px;
    }

    .works-grid {
        grid-template-columns: 1fr;
    }

    .contact-box {
        padding: 50px 25px;
    }

    .profile-info span {
        width: 90px;
    }
}