:root {
    --brand-green: #01894d;
    --brand-orange: #f39800;
    --bg-color: #f8fafb;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-sub: #666666;
    --border-color: #e5e7eb;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --font-family: 'Inter', 'Noto Sans JP', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Header */
.main-header {
    background-color: var(--brand-green);
    border-bottom: 2px solid var(--brand-orange);
    padding: 15px 0;
    color: #ffffff;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-header-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.brand-logo {
    font-weight: 800;
    font-size: 1.3rem;
    color: #ffffff;
}

.title-icon {
    width: 24px;
    height: 24px;
    color: #ffffff;
}

nav {
    display: flex;
    gap: 10px;
}

.btn-home,
.btn-print {
    background-color: rgba(255, 255, 255, 0.15);
    color: #fff;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.4);
    transition: all 0.2s;
    cursor: pointer;
}

.btn-home:hover,
.btn-print:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: #fff;
}

/* Info Section (Collapsible) */
.info-section {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.info-header {
    padding: 15px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background-color: #f8fafb;
    border-bottom: 1px solid transparent;
}

.info-header:hover {
    background-color: #f1f3f5;
}

.info-header h2 {
    font-size: 1.1rem;
    color: var(--brand-green);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
    fill: #666;
}

.info-content {
    padding: 24px;
    border-top: 1px solid var(--border-color);
}

.info-section.collapsed .info-content {
    display: none;
}

.info-section.collapsed .toggle-icon {
    transform: rotate(-180deg);
}

.usage-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.usage-step {
    flex: 1;
    min-width: 250px;
    background-color: #f8fafb;
    padding: 15px;
    border-radius: 6px;
    position: relative;
    padding-left: 45px;
}

.usage-step::before {
    content: attr(data-step);
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    background-color: var(--brand-green);
    color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 700;
}

/* Card Style */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 1px solid var(--border-color);
}

.card h2 {
    font-size: 1.25rem;
    color: var(--text-main);
    padding-bottom: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid var(--border-color);
}

.section-number {
    background-color: var(--brand-green);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 700;
}

/* Upload Area */
.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    background-color: #f8fafc;
    cursor: pointer;
    transition: all 0.2s;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--brand-orange);
    background-color: #fff7ed;
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--brand-green);
    margin-bottom: 16px;
}

.upload-text {
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.upload-subtext {
    font-size: 0.85rem;
    color: var(--text-sub);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background-color: #f0fdf4;
    padding: 12px;
    border-radius: 8px;
    color: var(--brand-green);
    font-weight: 600;
}

.remove-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #ef4444;
}

/* Result Display Wrapper for multiple items */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-sub);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    background-color: #fcfcfc;
}

.result-display {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-bottom: 48px;
    border-bottom: 2px dashed var(--border-color);
}

.result-display:last-child {
    padding-bottom: 0;
    border-bottom: none;
}

.result-item-header {
    background-color: var(--accent-color);
    padding: 10px 15px;
    border-radius: 6px;
    border-left: 4px solid var(--brand-green);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-download-text {
    background-color: var(--brand-green);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-download-text:hover {
    opacity: 0.8;
}

.result-item-name {
    font-size: 1rem;
    color: var(--brand-green);
    margin: 0;
    word-break: break-all;
}

.result-cols {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.image-preview-container {
    width: 100%;
    max-height: 400px;
    display: flex;
    justify-content: center;
    background-color: #f1f5f9;
    border-radius: 8px;
    overflow: hidden;
}

.image-preview-container img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.metadata-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.metadata-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.section-title {
    font-weight: 700;
    color: var(--brand-green);
    font-size: 0.95rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.text-area {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 40px;
    line-height: 1.6;
}

.raw-text {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-sub);
    max-height: 200px;
    overflow-y: auto;
}

.btn-copy {
    background-color: #f1f5f9;
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy:hover {
    background-color: var(--brand-green);
    color: white;
    border-color: var(--brand-green);
}

.params-table-container {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.params-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.params-table th,
.params-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.params-table tr:last-child td {
    border-bottom: none;
}

.params-table td:first-child {
    font-weight: 600;
    background-color: #f8fafc;
    width: 130px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: #ef4444;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    font-weight: 600;
}

.toast.success {
    background-color: var(--brand-green);
}

.hidden {
    display: none !important;
}

@media (min-width: 768px) {
    .result-cols {
        flex-direction: row;
        align-items: flex-start;
    }

    .image-preview-container {
        width: 300px;
        flex-shrink: 0;
        position: sticky;
        top: 100px;
    }

    .metadata-content {
        flex-grow: 1;
    }
}