/* Nord Theme Colors */
body[data-theme="dark"] {
    /* Polar Night */
    --nord0: #2e3440;
    --nord1: #3b4252;
    --nord2: #434c5e;
    --nord3: #4c566a;
    /* Snow Storm */
    --nord4: #d8dee9;
    --nord5: #e5e9f0;
    --nord6: #eceff4;
    /* Frost */
    --nord7: #8fbcbb;
    --nord8: #88c0d0;
    --nord9: #81a1c1;
    --nord10: #5e81ac;
    /* Aurora */
    --nord11: #bf616a;
    --nord12: #d08770;
    --nord13: #ebcb8b;
    --nord14: #a3be8c;
    --nord15: #b48ead;

    --bg-primary: var(--nord0);
    --bg-secondary: var(--nord1);
    --bg-tertiary: var(--nord2);
    --bg-hover: var(--nord3);
    --text-primary: var(--nord6);
    --text-secondary: var(--nord4);
    --border-color: var(--nord3);
    --accent-primary: var(--nord8);
    --accent-secondary: var(--nord9);
    --success: var(--nord14);
    --warning: var(--nord13);
    --error: var(--nord11);
}

body[data-theme="light"] {
    /* Snow Storm (backgrounds) */
    --nord0: #eceff4;
    --nord1: #e5e9f0;
    --nord2: #d8dee9;
    --nord3: #c2c9d6;
    /* Polar Night (text) */
    --nord4: #4c566a;
    --nord5: #434c5e;
    --nord6: #2e3440;
    /* Frost */
    --nord7: #8fbcbb;
    --nord8: #88c0d0;
    --nord9: #81a1c1;
    --nord10: #5e81ac;
    /* Aurora */
    --nord11: #bf616a;
    --nord12: #d08770;
    --nord13: #d08f5f;
    --nord14: #a3be8c;
    --nord15: #b48ead;

    --bg-primary: var(--nord0);
    --bg-secondary: var(--nord1);
    --bg-tertiary: var(--nord2);
    --bg-hover: var(--nord3);
    --text-primary: var(--nord6);
    --text-secondary: var(--nord4);
    --border-color: var(--nord3);
    --accent-primary: var(--nord9);
    --accent-secondary: var(--nord10);
    --success: var(--nord14);
    --warning: var(--nord13);
    --error: var(--nord11);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    transition: background-color 0.3s ease;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Form Controls */
.select-input {
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.select-input:hover {
    background-color: var(--bg-hover);
}

.select-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
    background-color: var(--bg-primary);
}

/* Button */
.btn-primary {
    padding: 0.5rem 1.5rem;
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    padding: 0.4rem 0.8rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-1px);
}

.btn-secondary:active {
    transform: translateY(0);
    background-color: var(--bg-secondary);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow: hidden;
    padding: 0;
}

.editor-container {
    display: flex;
    height: 100%;
    position: relative;
}

.editor-container.detached .preview-panel {
    display: none;
}

.editor-container.detached .editor-panel {
    width: 100% !important;
}

.editor-container.detached .resizer {
    display: none;
}

/* Panels */
.panel {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-secondary);
    overflow: hidden;
    transition: background-color 0.3s ease;
}

.editor-panel {
    width: 50%;
    min-width: 200px;
}

.preview-panel {
    flex: 1;
    min-width: 200px;
}

.panel-header {
    padding: 0.75rem 1rem;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.panel-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Code Editor */
.code-editor {
    flex: 1;
    padding: 1rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: none;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.code-editor::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Resizer */
.resizer {
    width: 4px;
    background-color: var(--border-color);
    cursor: col-resize;
    transition: background-color 0.2s ease;
    position: relative;
}

.resizer:hover {
    background-color: var(--accent-primary);
}

.resizer:active {
    background-color: var(--accent-secondary);
}

/* Preview Content */
.preview-content {
    flex: 1;
    padding: 1rem;
    background-color: var(--bg-primary);
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    text-align: center;
}

.preview-placeholder svg {
    opacity: 0.5;
}

.preview-placeholder p {
    font-size: 0.875rem;
}

.preview-content img,
.preview-content svg {
    max-width: 100%;
    height: auto;
}

.preview-content.loading {
    opacity: 0.6;
}

.preview-error {
    color: var(--error);
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    border-left: 4px solid var(--error);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: background-color 0.3s ease;
}

.copyleft {
    display: inline-block;
    font-size: 1.2rem;
    margin-left: 0.25rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .control-group {
        justify-content: space-between;
    }

    .editor-container {
        flex-direction: column;
    }

    .editor-panel {
        width: 100% !important;
        height: 50%;
    }

    .preview-panel {
        height: 50%;
    }

    .resizer {
        width: 100%;
        height: 4px;
        cursor: row-resize;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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