:root {
    --bg-color: #f5f5f7;
    --card-bg: #ffffff;
    --text-main: #1d1d1f;
    --text-secondary: #86868b;
    --primary-color: #1d1d1f;
    --primary-hover: #333336;
    --success-color: #34c759;
    --error-color: #ff3b30;
    --info-color: #0a84ff;
    --border-color: #d2d2d7;
    --drag-bg-hover: #fbfbfd;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

    body.i18n-loading {
        visibility: hidden;
    }

    body.i18n-ready {
        visibility: visible;
    }

.container {
    max-width: 1500px;
    margin: 80px auto;
    padding: 0 20px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand-logo {
    height: 48px;
    width: auto;
    margin-bottom: 24px;
    object-fit: contain;
}

.header h1 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 16px;
}

.intro-text {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 1000px;
    margin: 0 auto;
    line-height: 1.7;
}

    .intro-text strong {
        color: var(--text-main);
        font-weight: 600;
    }

.card {
    background-color: var(--card-bg);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.03);
    text-align: center;
}

.privacy-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: rgba(52, 199, 89, 0.1);
    color: #248a3d;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 30px;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 60px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #fafafa;
    position: relative;
}

    .drop-zone.dragover {
        border-color: var(--primary-color);
        background-color: var(--drag-bg-hover);
        transform: scale(1.02);
    }

.drop-icon {
    color: var(--text-secondary);
    margin-bottom: 16px;
    transition: color 0.2s;
}

.drop-zone.dragover .drop-icon {
    color: var(--primary-color);
}

.drop-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.drop-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

#fileInput {
    display: none;
}

.process-box {
    margin-top: 30px;
    display: none;
    flex-direction: column;
    gap: 16px;
    animation: fadeIn 0.4s ease;
}

.process-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.file-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: left;
    word-break: break-all;
}

.status-text {
    flex-shrink: 0;
    font-size: 14px;
    color: var(--info-color);
    text-align: right;
}

.hash-display {
    background-color: #f5f5f7;
    padding: 16px;
    border-radius: 12px;
    font-family: Consolas, monospace;
    font-size: 13px;
    color: var(--text-main);
    word-break: break-all;
    border: 1px solid var(--border-color);
    text-align: left;
}

.hash-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: bold;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.result-box {
    padding: 20px;
    border-radius: 12px;
    font-weight: 500;
    display: none;
    word-break: break-word;
    text-align: left;
}

.result-success {
    background-color: rgba(52, 199, 89, 0.1);
    color: #248a3d;
    border: 1px solid rgba(52, 199, 89, 0.2);
}

.result-error {
    background-color: rgba(255, 59, 48, 0.05);
    color: var(--error-color);
    border: 1px solid rgba(255, 59, 48, 0.15);
}

.result-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.result-desc {
    font-size: 14px;
    line-height: 1.7;
}

.record-panel {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.record-grid {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 8px 12px;
    font-size: 14px;
}

.record-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.record-value {
    color: var(--text-main);
    word-break: break-all;
}

.btn-reset {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    text-decoration: underline;
    margin-top: 10px;
    transition: color 0.2s;
}

    .btn-reset:hover {
        color: var(--text-main);
    }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pulsate {
    animation: pulsate 1.5s infinite ease-in-out;
}

@keyframes pulsate {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.6;
    }
}

@media (max-width: 640px) {
    .container {
        margin: 30px auto;
    }

    .card {
        padding: 24px;
    }

    .header h1 {
        font-size: 26px;
    }

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

@media (max-width: 640px) {
    .page-language-switch {
        top: 12px;
        left: 12px;
    }
}

.page-language-switch {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-switch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.language-button {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
}

    .language-button:hover {
        color: var(--text-main);
    }

    .language-button.active {
        background-color: var(--primary-color);
        color: #ffffff;
    }

@media (max-width: 640px) {
    .page-language-switch {
        top: 12px;
        right: 12px;
    }
}