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

body {
    background: #0d1117;
    color: #c9d1d9;
    font-family: 'Courier New', Courier, monospace;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.card {
    background: #161b22;
    border: 1px solid #21262d;
    border-radius: 8px;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 580px;
    box-shadow: 0 0 40px rgba(0,255,160,0.04);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #00ffa0, #0080ff);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: #0d1117;
    font-weight: bold;
}

h1 {
    font-size: 1.4rem;
    font-weight: bold;
    color: #e6edf3;
    letter-spacing: 0.15em;
}

.tagline {
    font-size: 0.72rem;
    color: #484f58;
    margin-bottom: 2rem;
    letter-spacing: 0.03em;
}

.badges {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    letter-spacing: 0.05em;
    font-weight: bold;
}

.badge-green { background: rgba(0,255,160,0.08); color: #00ffa0; border: 1px solid rgba(0,255,160,0.2); }
.badge-blue  { background: rgba(0,128,255,0.08); color: #58a6ff; border: 1px solid rgba(0,128,255,0.2); }
.badge-gray  { background: rgba(255,255,255,0.04); color: #8b949e; border: 1px solid #30363d; }

label {
    display: block;
    font-size: 0.72rem;
    color: #8b949e;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

textarea {
    width: 100%;
    height: 160px;
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: 6px;
    color: #c9d1d9;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.88rem;
    padding: 0.9rem;
    resize: vertical;
    margin-bottom: 1.4rem;
    transition: border-color 0.2s;
    outline: none;
}

textarea:focus { border-color: #00ffa0; box-shadow: 0 0 0 2px rgba(0,255,160,0.08); }

.file-section { margin-bottom: 1.8rem; }

.file-label {
    display: inline-block;
    background: #21262d;
    border: 1px solid #30363d;
    border-radius: 6px;
    color: #8b949e;
    font-size: 0.78rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

.file-label:hover { border-color: #58a6ff; color: #58a6ff; }

#file { display: none; }

#filename {
    font-size: 0.72rem;
    color: #58a6ff;
    margin-left: 0.6rem;
    vertical-align: middle;
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #00ffa0 0%, #0080ff 100%);
    border: none;
    border-radius: 6px;
    color: #0d1117;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    font-weight: bold;
    letter-spacing: 0.1em;
    padding: 0.85rem;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
    text-transform: uppercase;
}

.submit-btn:hover { opacity: 0.9; }
.submit-btn:active { transform: scale(0.99); }

#status {
    margin-top: 1rem;
    font-size: 0.78rem;
    min-height: 1.2rem;
    text-align: center;
    color: #00ffa0;
}

#status.error { color: #f85149; }

.divider {
    border: none;
    border-top: 1px solid #21262d;
    margin: 2rem 0 1.2rem;
}

.notice {
    font-size: 0.68rem;
    color: #3d444d;
    line-height: 1.7;
}

.notice span { color: #484f58; }

.footer {
    margin-top: 1.5rem;
    font-size: 0.62rem;
    color: #21262d;
    text-align: center;
    letter-spacing: 0.05em;
}