/* Markdown Tool Styles - Premium Minimalist Design */

:root {
    --primary-color: #20c997;
    --primary-light: #e6fcf5;
    --primary-hover: #12b886;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --radius-lg: 16px;
    --radius-md: 10px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.05);
}

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

body {
    background-color: var(--bg-body);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

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

.app-header {
    height: 60px;
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    flex-shrink: 0;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.app-logo i {
    font-size: 1.5rem;
}

.header-actions {
    display: flex;
    gap: 12px;
}

.app-main {
    flex: 1;
    display: flex;
    padding: 16px;
    gap: 16px;
    overflow: hidden;
}

/* Cards */
.editor-card {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.editor-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.card-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fafafa;
}

.card-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-body {
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* Textarea */
.editor-textarea {
    width: 100%;
    height: 100%;
    border: none;
    padding: 20px;
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    color: #334155;
    background: transparent;
}

/* Preview */
.preview-content {
    height: 100%;
    overflow-y: auto;
    padding: 30px;
    background: #fff;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

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

.btn-outline {
    background: #fff;
    border-color: var(--border-color);
    color: var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-xs {
    padding: 4px 10px;
    font-size: 0.75rem;
}

/* Markdown Preview Styling */
.preview-content h1,
.preview-content h2,
.preview-content h3 {
    margin: 1.5em 0 0.5em;
    color: #0f172a;
}

.preview-content h1 {
    font-size: 2.25rem;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 0.3em;
}

.preview-content h2 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3em;
}

.preview-content h3 {
    font-size: 1.25rem;
}

.preview-content p {
    margin-bottom: 1.25em;
    color: #334155;
}

.preview-content code {
    background: #f1f5f9;
    color: #e11d48;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

.preview-content pre {
    background: #1e293b;
    color: #f8fafc;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 1.5em;
    overflow-x: auto;
}

.preview-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.preview-content blockquote {
    border-left: 4px solid var(--primary-color);
    background: var(--primary-light);
    padding: 16px 20px;
    margin: 1.5em 0;
    border-radius: 0 8px 8px 0;
    color: #0f766e;
}

.preview-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
}

.preview-content th,
.preview-content td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
}

.preview-content th {
    background: #f8fafc;
    font-weight: 600;
}

.preview-content ul,
.preview-content ol {
    margin-bottom: 1.5em;
    padding-left: 1.5em;
}

.preview-content li {
    margin-bottom: 0.5em;
}

/* Footer */
.app-footer {
    height: 40px;
    background: #fff;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.app-footer a {
    color: var(--primary-color);
    text-decoration: none;
    margin: 0 4px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Responsive */
@media (max-width: 1024px) {
    .app-main {
        flex-direction: column;
        overflow-y: auto;
    }

    .editor-card {
        min-height: 400px;
    }
}