:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f7fa;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
    --line-numbers-bg: #f0f0f0;
    --line-numbers-text: #888888;
    --editor-bg: #f8f9fc;
    --toast-bg: rgba(0, 0, 0, 0.8);
    --toast-text: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #3a3a3a;
    --accent-color: #6366f1;
    --accent-hover: #818cf8;
    --line-numbers-bg: #2a2a2a;
    --line-numbers-text: #777777;
    --editor-bg: #2d2d2d;
    --toast-bg: rgba(255, 255, 255, 0.8);
    --toast-text: #1a1a1a;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    box-shadow: 0 1px 3px var(--shadow-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-color);
}

.logo i {
    font-size: 1.75rem;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.25rem;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

main {
    padding: 30px 0;
}

.editor-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.editor-header h2 {
    font-weight: 600;
    color: var(--text-primary);
}

.editor-wrapper {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px var(--shadow-color);
    position: relative;
    height: 500px;
}

.line-numbers {
    background-color: var(--line-numbers-bg);
    color: var(--line-numbers-text);
    padding: 15px 10px;
    text-align: right;
    user-select: none;
    overflow-y: hidden;
    min-width: 50px;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    border-right: 1px solid var(--border-color);
}

.editor-area {
    flex-grow: 1;
    position: relative;
    display: flex;
}

#editor {
    width: 100%;
    height: 100%;
    padding: 15px;
    background-color: var(--editor-bg);
    color: var(--text-primary);
    border: none;
    resize: none;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    tab-size: 4;
    outline: none;
}

.viewer-area {
    width: 100%;
    height: 100%;
    padding: 15px;
    background-color: var(--editor-bg);
    color: var(--text-primary);
    overflow: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre;
    tab-size: 4;
}

.code-viewer {
    white-space: pre;
    tab-size: 4;
}

.code-viewer pre,
.code-viewer code {
    margin: 0;
    padding: 0;
    white-space: pre;
    overflow-x: auto;
    width: 100%;
    font-family: 'Fira Code', monospace;
}

/* Ensure highlight.js doesn't add extra space */
.hljs {
    padding: 0 !important;
    background: transparent !important;
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

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

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

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

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    background-color: var(--toast-bg);
    color: var(--toast-text);
    border-radius: 6px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
}

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

.url-container {
    display: flex;
    flex-direction: row; /* Ensure horizontal layout */
    align-items: stretch; /* Make items same height */
    margin-top: 20px;
    width: 100%;
}

.url-display {
    flex: 1; /* Take up available space */
    padding: 12px 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-right: none; /* Remove right border to connect with button */
    border-radius: 6px 0 0 6px;
    color: var(--text-primary);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-btn {
    flex: 0 0 auto; /* Don't grow or shrink */
    padding: 12px 15px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background-color: var(--accent-hover);
}

footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 30px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .editor-wrapper {
        height: 400px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Custom styling for highlight.js themes */
[data-theme="light"] .hljs {
    background: var(--editor-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .hljs {
    background: var(--editor-bg);
    color: var(--text-primary);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

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