/* Document Conversion API - Styles */

/* Import Pretendard Korean Font */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

:root {
    /* Colors - Deep Navy/Charcoal theme */
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-card: #1e293b;
    --color-bg-card-hover: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    /* Accent colors */
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-primary-glow: rgba(99, 102, 241, 0.3);
    --color-secondary: #8b5cf6;

    /* Status colors */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Borders */
    --border-color: #334155;
    --border-radius: 12px;
    --border-radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);

    /* Typography - Pretendard for Korean */
    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

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

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-card);
}

/* Main Content */
.main-content {
    padding: 32px 0;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 40px 20px 48px;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.3;
}

.highlight-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px 12px;
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.feature-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 24px 16px 32px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .feature-card {
        padding: 20px 16px;
    }

    .feature-icon {
        font-size: 2rem;
    }
}

/* Upload Section - Prominent Design */
.upload-section {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 20px;
}

.upload-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.upload-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(99, 102, 241, 0.1), transparent 30%);
    animation: rotate 8s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

.upload-zone {
    border: 3px dashed var(--color-primary);
    border-radius: var(--border-radius);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: rgba(15, 23, 42, 0.8);
    position: relative;
    z-index: 1;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: #818cf8;
    background: rgba(99, 102, 241, 0.15);
    transform: scale(1.02);
}

.upload-zone.drag-over {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.upload-icon {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.upload-icon svg {
    width: 64px;
    height: 64px;
}

.upload-main {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.upload-sub {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

/* File Info */
.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    padding: 16px;
    background: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.file-details {
    display: flex;
    align-items: center;
    gap: 12px;
}

.file-icon {
    font-size: 1.5rem;
}

.file-meta {
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 500;
    color: var(--color-text);
}

.file-size {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.btn-remove {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 8px;
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

.btn-remove:hover {
    color: var(--color-error);
}

/* Convert Button */
.btn-convert {
    width: 100%;
    margin-top: 24px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-convert:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-convert:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Progress Section */
.progress-section {
    max-width: 600px;
    margin: 24px auto 0;
}

.progress-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.progress-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--color-info);
    color: white;
}

.status-badge.processing {
    background: var(--color-warning);
}

.status-badge.completed {
    background: var(--color-success);
}

.status-badge.failed {
    background: var(--color-error);
}

.progress-bar-container {
    height: 8px;
    background: var(--color-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-message {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Result Section */
.result-section {
    max-width: 600px;
    margin: 24px auto 0;
}

.result-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 48px 32px;
    text-align: center;
}

.result-card.success {
    border-color: var(--color-success);
}

.result-card.error {
    border-color: var(--color-error);
}

.result-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 24px;
    font-size: 2rem;
    font-weight: bold;
}

.success-icon {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.error-icon {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.result-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.result-files {
    background: var(--color-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    margin: 24px 0;
    text-align: left;
}

.result-file {
    padding: 8px 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-file:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.btn-download,
.btn-preview,
.btn-new,
.btn-retry {
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-download {
    background: var(--color-success);
    color: white;
}

.btn-download:hover {
    background: #059669;
    transform: translateY(-2px);
}

.btn-preview {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--border-color);
}

.btn-preview:hover {
    background: var(--color-bg-card-hover);
}

.btn-new {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-new:hover {
    background: rgba(99, 102, 241, 0.1);
}

.btn-retry {
    background: var(--color-primary);
    color: white;
}

.btn-retry:hover {
    background: var(--color-primary-hover);
}

.error-message {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    z-index: 1000;
}

.modal-content {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 800px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.preview-content {
    background: var(--color-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}

/* Formats Section */
.formats-section {
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 48px;
}

.formats-section h2 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 32px;
    color: var(--color-text-secondary);
}

.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.format-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.format-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.format-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.format-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.format-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* API Documentation Section */
.api-docs-section {
    max-width: 800px;
    margin: 60px auto 0;
    padding: 0 20px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
    text-align: center;
}

.api-doc-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 16px;
}

.api-doc-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.api-doc-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.api-doc-card code {
    background: var(--color-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--color-primary);
}

.endpoint-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: monospace;
    margin-bottom: 12px;
}

.code-block {
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: 8px;
    padding: 16px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    color: #c9d1d9;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    margin: 12px 0;
}

.response-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 16px;
    margin-bottom: 8px;
}

.format-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.format-tag {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.format-tag.hwp {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
}

.format-tag.pdf {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.format-tag.office {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.format-tag.other {
    background: rgba(107, 114, 128, 0.2);
    color: #9ca3af;
}

@media (max-width: 768px) {
    .api-docs-section {
        margin-top: 40px;
        padding: 0 16px;
    }

    .section-title {
        font-size: 1.25rem;
    }

    .api-doc-card {
        padding: 16px;
    }

    .code-block {
        font-size: 0.75rem;
        padding: 12px;
    }
}

/* Footer */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 48px;
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Sticky Header - using fixed for better mobile support */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Body padding to account for fixed header */
body {
    padding-top: 80px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        padding: 0 16px;
    }

    body {
        padding-top: 70px;
    }

    .header {
        padding: 12px 0;
    }

    .header-content {
        position: relative;
    }

    .logo h1 {
        font-size: 1rem;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: -16px;
        right: -16px;
        background: var(--color-bg-secondary);
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px;
        gap: 8px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px 16px;
    }

    .upload-card {
        padding: 20px;
    }

    .upload-zone {
        padding: 24px 16px;
    }

    .upload-main {
        font-size: 1rem;
    }

    .upload-sub {
        font-size: 0.8rem;
    }

    .formats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        padding: 24px 0;
    }

    .btn-convert {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 0.9rem;
    }

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

    .upload-card {
        padding: 16px;
    }
}