:root {
    --bg-color: #0f172a;
    --panel-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --border-color: #334155;
    --success-color: #22c55e;
    --warning-color: #eab308;
    --font-main: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Syntax Highlighting Colors */
    --sh-key: #f472b6;
    --sh-string: #a78bfa;
    --sh-number: #fbbf24;
    --sh-header: #38bdf8;
    --sh-bracket: #94a3b8;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.5rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
    position: relative;
}

/* Drag & Drop Overlay */
.drag-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.9);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
    border-radius: 12px;
    border: 2px dashed var(--accent-color);
    transition: opacity 0.2s ease;
}

.drag-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.drag-content {
    text-align: center;
    color: var(--accent-color);
}

.drag-content svg {
    margin-bottom: 1rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.logo .accent {
    color: var(--accent-color);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

.converter-workspace {
    display: flex;
    flex: 1;
    gap: 1.5rem;
    min-height: 0;
    /* Important for nested scrolling */
}

.panel {
    flex: 1;
    background-color: var(--panel-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.panel-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(15, 23, 42, 0.3);
}

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

.badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.editor-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

textarea,
.code-editor {
    width: 100%;
    height: 100%;
    background-color: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 1.5rem;
    resize: none;
    outline: none;
    line-height: 1.6;
    overflow: auto;
    white-space: pre;
}

.code-editor {
    cursor: text;
}

textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

.hidden {
    display: none;
}

.panel-footer {
    padding: 0.75rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(15, 23, 42, 0.3);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stats-container {
    display: flex;
    gap: 1rem;
}

.stats.highlight {
    color: var(--accent-color);
    font-weight: 600;
}

.stats.success {
    color: var(--success-color);
}

.controls {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.btn {
    cursor: pointer;
    border: none;
    border-radius: 8px;
    font-family: var(--font-main);
    font-weight: 600;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn.primary {
    background-color: var(--accent-color);
    color: var(--bg-color);
    padding: 0.75rem 1.5rem;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
}

.btn.primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.5);
}

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

.btn.secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
}

.btn.secondary:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background-color: rgba(30, 41, 59, 0.5);
}

.btn.icon-btn {
    background-color: transparent;
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 6px;
}

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

.output-actions {
    display: flex;
    gap: 0.5rem;
}

/* Syntax Highlighting Classes */
.sh-key {
    color: var(--sh-key);
}

.sh-string {
    color: var(--sh-string);
}

.sh-number {
    color: var(--sh-number);
}

.sh-header {
    color: var(--sh-header);
    font-weight: bold;
}

.sh-bracket {
    color: var(--sh-bracket);
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
    border: 2px solid var(--panel-bg);
}

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

@media (max-width: 768px) {
    .converter-workspace {
        flex-direction: column;
    }

    .controls {
        flex-direction: row;
        padding: 1rem 0;
    }

    body {
        overflow: auto;
    }

    .app-container {
        height: auto;
    }

    .panel {
        height: 400px;
    }
}

footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

footer .accent {
    color: var(--accent-color);
    font-weight: 600;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    border-bottom: 1px dashed var(--border-color);
}

footer a:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}