:root {
    --text: #f0f4f8;
    --pink: #ff4b93;
    --accent: #f4d03f;
    --greenA: #2be77a;
    --greenB: #0fbe55;
    --radius: 12px;
    --shadow: 0 10px 28px rgba(0, 0, 0, 0.65);
    --glow: rgba(255, 75, 147, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.05);
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    display: flex;
    flex-direction: column;
    color: var(--text);
    font-family: "Noto Sans JP", "Roboto Condensed", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    background: #000 url("/static/images/images/ChatGPTImage.png") no-repeat center/cover fixed;
    overflow-x: hidden;
}

.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.65));
}

header {
    text-align: center;
    padding: 30px 10px;
    font-size: 2rem;
    font-weight: 900;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 75, 147, 0.25);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 10;
    background: linear-gradient(45deg, var(--pink), var(--text));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 3px 10px var(--glow);
}

.wrap {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    width: 100%;
    box-sizing: border-box;
}

main {
    position: relative;
    z-index: 1;
}

.recruitment-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.recruitment-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 75, 147, 0.25);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.recruitment-card:hover {
    transform: translateY(-8px) scale(1.04);
    box-shadow: 0 0 20px var(--glow), 0 14px 40px rgba(0, 0, 0, 0.75);
}

.recruitment-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 25%, rgba(255, 75, 147, 0.25), transparent 75%);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 0;
}

.recruitment-card:hover::before {
    opacity: 1;
}

.recruitment-card h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 900;
    background: linear-gradient(90deg, var(--text), #d1d9e6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    z-index: 1;
}

.recruitment-card p {
    line-height: 1.6;
    margin: 6px 0;
    color: #d1d9e6;
    font-size: 14px;
    position: relative;
    z-index: 1;
}

.recruitment-card .salary {
    color: var(--accent);
    font-weight: bold;
}

.apply-btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--pink), var(--accent));
    border: none;
    color: white;
    font-weight: bold;
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    z-index: 1;
}

.apply-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 10px var(--glow);
}

.application-form {
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 75, 147, 0.25);
    border-radius: var(--radius);
    padding: 20px;
    display: none;
    animation: slideUp 0.5s ease;
    position: relative;
    z-index: 1;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 6px;
    color: #d1d9e6;
    font-size: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid rgba(255, 75, 147, 0.25);
    border-radius: 6px;
    padding: 8px;
    font-size: 0.95rem;
    box-sizing: border-box;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #d1d9e6;
    opacity: 0.7;
}

.triple-group div {
    display: flex;
    gap: 10px;
}

.form-buttons {
    text-align: right;
    margin-top: 10px;
}

.confirm-btn {
    background: linear-gradient(90deg, var(--pink), var(--accent));
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.confirm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 10px var(--glow);
}

footer {
    text-align: center;
    padding: 25px;
    font-size: 0.9rem;
    color: #d1d9e6;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255, 75, 147, 0.25);
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 5;
}

@media (max-width: 768px) {
    .wrap {
        padding: 20px 15px;
    }

    header {
        font-size: 1.6rem;
    }

    .recruitment-card h2 {
        font-size: 1.3rem;
    }

    .recruitment-card p {
        font-size: 13px;
    }

    .apply-btn, .confirm-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .form-group label {
        font-size: 14px;
    }

    .form-group input,
    .form-group textarea {
        font-size: 0.9rem;
    }
}

@media (max-width: 540px) {
    .recruitment-list {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    header {
        font-size: 1.4rem;
    }

    .recruitment-card h2 {
        font-size: 1.2rem;
    }

    .recruitment-card p {
        font-size: 12px;
    }

    .apply-btn, .confirm-btn {
        padding: 6px 14px;
        font-size: 12px;
    }

    .form-group label {
        font-size: 13px;
    }

    .form-group input,
    .form-group textarea {
        font-size: 0.85rem;
    }
}