* {
    box-sizing: border-box;
}

body {
    background: #0f172a;
    color: #f8fafc;
    font-family: Arial, sans-serif;
    margin: 0;
}

.container {
    margin: 0 auto;
    max-width: 620px;
    padding: 70px 20px;
}

header {
    margin-bottom: 30px;
    text-align: center;
}

.brand-mark {
    align-items: center;
    background: #38bdf8;
    border-radius: 12px;
    color: #082f49;
    display: inline-flex;
    font-size: 22px;
    font-weight: bold;
    height: 46px;
    justify-content: center;
    margin-bottom: 15px;
    width: 46px;
}

h1,
h2 {
    margin: 0;
}

header p {
    color: #94a3b8;
    margin: 10px 0 0;
}

.share-card,
.result-card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 14px;
    padding: 24px;
}

.file-picker {
    align-items: center;
    border: 2px dashed #475569;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 30px 20px;
    text-align: center;
}

.file-picker:hover {
    border-color: #38bdf8;
}

.file-picker-icon {
    color: #38bdf8;
    font-size: 32px;
    font-weight: bold;
}

.file-picker span:last-child {
    color: #94a3b8;
    font-size: 14px;
    overflow-wrap: anywhere;
}

#fileInput {
    display: none;
}

button {
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    padding: 12px 18px;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.primary-button {
    background: #38bdf8;
    color: #082f49;
    margin-top: 18px;
    width: 100%;
}

.secondary-button {
    background: #334155;
    color: white;
    white-space: nowrap;
}

.status {
    font-size: 14px;
    min-height: 20px;
    text-align: center;
}

.status.success,
.success-label {
    color: #86efac;
}

.status.error {
    color: #fca5a5;
}

.status.loading {
    color: #93c5fd;
}

.result-card {
    border-color: #22c55e;
    margin-top: 18px;
}

.result-card h2 {
    font-size: 20px;
    margin: 8px 0 16px;
}

.success-label {
    font-size: 13px;
    font-weight: bold;
    text-transform: uppercase;
}

.link-row {
    align-items: center;
    display: flex;
    gap: 10px;
}

.link-row a {
    color: #7dd3fc;
    overflow-wrap: anywhere;
}

#expiration,
.privacy-note {
    color: #94a3b8;
    font-size: 14px;
}

.privacy-note {
    line-height: 1.5;
    margin: 22px auto 0;
    max-width: 520px;
    text-align: center;
}

.hidden {
    display: none;
}

@media (max-width: 520px) {
    .container {
        padding-top: 35px;
    }

    .link-row {
        align-items: stretch;
        flex-direction: column;
    }
}