/* ============================================
   RISON COPY CHECKER - GITHUB DARK THEME
   ============================================ */

/* CSS Variables - GitHub Dark Colors */
:root {
    /* Background colors */
    --color-canvas-default: #0d1117;
    --color-canvas-subtle: #161b22;
    --color-canvas-inset: #010409;
    
    /* Border colors */
    --color-border-default: #30363d;
    --color-border-muted: #21262d;
    --color-border-subtle: rgba(240, 246, 252, 0.1);
    
    /* Text colors */
    --color-text-primary: #c9d1d9;
    --color-text-secondary: #8b949e;
    --color-text-muted: #6e7681;
    --color-text-link: #58a6ff;
    
    /* Accent colors */
    --color-accent-fg: #58a6ff;
    --color-accent-emphasis: #1f6feb;
    --color-success-fg: #3fb950;
    --color-success-emphasis: #238636;
    --color-warning-fg: #d29922;
    --color-danger-fg: #f85149;
    --color-danger-emphasis: #da3633;
    
    /* Button colors */
    --color-btn-primary-bg: #238636;
    --color-btn-primary-hover-bg: #2ea043;
    --color-btn-secondary-bg: #21262d;
    --color-btn-secondary-hover-bg: #30363d;
    
    /* Shadows */
    --shadow-small: 0 1px 0 rgba(27, 31, 35, 0.04);
    --shadow-medium: 0 3px 6px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.25);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-canvas-default);
    min-height: 100vh;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
    background: linear-gradient(180deg, var(--color-canvas-subtle) 0%, var(--color-canvas-default) 100%);
    border-bottom: 1px solid var(--color-border-default);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-success-fg);
}

.app-header h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.header-subtitle {
    color: var(--color-text-secondary);
    font-size: 16px;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-xl);
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   SECTIONS
   ============================================ */
.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.section-icon {
    width: 24px;
    height: 24px;
    color: var(--color-accent-fg);
}

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
}

/* ============================================
   UPLOAD SECTION
   ============================================ */
.upload-section {
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Upload Card */
.upload-card {
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.upload-card:hover {
    border-color: var(--color-border-muted);
}

.upload-card.has-file {
    border-color: var(--color-success-fg);
}

.upload-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
}

.upload-label {
    font-weight: 600;
    color: var(--color-text-primary);
}

.required-badge {
    font-size: 11px;
    font-weight: 500;
    color: var(--color-danger-fg);
    background-color: rgba(248, 81, 73, 0.1);
    padding: 2px 8px;
    border-radius: 20px;
}

.optional-badge {
    font-size: 11px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--color-canvas-subtle);
    padding: 2px 8px;
    border-radius: 20px;
    border: 1px solid var(--color-border-default);
}

/* Dropzone */
.upload-dropzone {
    position: relative;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.upload-dropzone:hover {
    background-color: var(--color-canvas-subtle);
}

.upload-dropzone.dragover {
    background-color: rgba(88, 166, 255, 0.1);
    border: 2px dashed var(--color-accent-fg);
}

.upload-dropzone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.upload-icon {
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
}

.dropzone-text {
    color: var(--color-text-secondary);
    font-size: 13px;
}

.file-name {
    color: var(--color-text-muted);
    font-size: 12px;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

.file-name.selected {
    color: var(--color-success-fg);
    font-weight: 500;
}

/* ============================================
   BUTTONS
   ============================================ */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background-color: var(--color-btn-primary-bg);
    color: #ffffff;
    flex: 1;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-btn-primary-hover-bg);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--color-btn-secondary-bg);
    color: var(--color-text-primary);
    border-color: var(--color-border-default);
}

.btn-secondary:hover {
    background-color: var(--color-btn-secondary-hover-bg);
    border-color: var(--color-text-muted);
}

.btn-icon {
    padding: var(--spacing-sm);
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-default);
}

.btn-icon:hover {
    color: var(--color-text-primary);
    background-color: var(--color-btn-secondary-bg);
}

/* ============================================
   STATUS SECTION
   ============================================ */
.status-section {
    position: sticky;
    top: var(--spacing-lg);
    height: fit-content;
}

.status-card {
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.status-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-default);
}

.status-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent-fg);
}

.status-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.status-content {
    text-align: center;
}

#statusText {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: var(--spacing-md);
}

#statusText.success {
    color: var(--color-success-fg);
}

#statusText.error {
    color: var(--color-danger-fg);
}

#statusText.processing {
    color: var(--color-accent-fg);
}

/* Progress Bar */
.progress-container {
    margin-top: var(--spacing-md);
}

.progress-bar {
    height: 8px;
    background-color: var(--color-canvas-default);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

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

.progress-text {
    font-size: 12px;
    color: var(--color-text-muted);
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

/* ============================================
   RESULTS SECTION
   ============================================ */
.results-section {
    grid-column: 1 / -1;
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-canvas-default);
    border-bottom: 1px solid var(--color-border-default);
}

.results-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.results-title h2 {
    font-size: 16px;
    font-weight: 600;
}

.results-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.results-content {
    padding: var(--spacing-lg);
    max-height: 600px;
    overflow-y: auto;
}

/* Markdown Styling */
.results-content h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border-default);
}

.results-content h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.results-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.results-content strong {
    color: var(--color-text-primary);
}

.results-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    font-size: 13px;
}

.results-content th,
.results-content td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-default);
    text-align: left;
}

.results-content th {
    background-color: var(--color-canvas-default);
    color: var(--color-text-primary);
    font-weight: 600;
}

.results-content tr:nth-child(even) {
    background-color: var(--color-canvas-inset);
}

.results-content tr:hover {
    background-color: var(--color-canvas-default);
}

.results-content hr {
    border: none;
    border-top: 1px solid var(--color-border-default);
    margin: var(--spacing-lg) 0;
}

.results-content em {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(1, 4, 9, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border-default);
    border-top-color: var(--color-accent-fg);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

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

.loading-text {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.loading-subtext {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ============================================
   FOOTER
   ============================================ */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border-default);
    background-color: var(--color-canvas-subtle);
}

.app-footer p {
    color: var(--color-text-muted);
    font-size: 12px;
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-canvas-default);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-default);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 600px) {
    .app-header {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .app-header h1 {
        font-size: 22px;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .upload-section,
    .status-card,
    .results-section {
        padding: var(--spacing-md);
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .results-content {
        max-height: 400px;
    }
    
    .results-content table {
        font-size: 11px;
    }
    
    .results-content th,
    .results-content td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-large);
    z-index: 1001;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-color: var(--color-success-fg);
}

.toast.error {
    border-color: var(--color-danger-fg);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}