:root {
    --bg-color: #121212;
    --sidebar-bg: #1e1e1e;
    --pane-bg: #252526;
    --border-color: #333333;
    --text-primary: #cccccc;
    --text-secondary: #808080;
    --accent-color: #007acc;
    --accent-hover: #0098ff;
    --success-color: #4caf50;
    --error-color: #f44336;
    --code-font: 'Fira Code', monospace;

}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    padding: 0 20px 30px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.nav-tabs {
    display: flex;
    flex-direction: column;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 15px 20px;
    text-align: left;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tab-btn:hover {
    background-color: rgba(255,255,255,0.05);
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: rgba(0, 122, 204, 0.1);
    color: #ffffff;
    border-left-color: var(--accent-color);
}

.mt-auto {
    margin-top: auto;
}


/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 15px 25px;
    overflow-y: auto;
}

.content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 500px; /* Ensure space for layout */
}

.tool-section {
    display: none;
    height: 100%;
    flex-direction: column;
    animation: fadeIn 0.3s ease;
}

.tool-section.active {
    display: flex;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    color: #ffffff;
    font-weight: 500;
}

.status-indicator {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    background-color: #333;
    color: #fff;
}

.status-indicator.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success-color);
}

.status-indicator.error {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error-color);
}

.split-pane {
    display: flex;
    flex: 1;
    gap: 15px;
}

.pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--pane-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.pane-header {
    background-color: #1e1e1e;
    padding: 10px 15px;
    font-size: 0.9rem;
    color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pane-actions {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}

textarea {
    flex: 1;
    width: 100%;
    background-color: transparent;
    border: none;
    color: var(--text-primary);
    padding: 15px;
    font-family: var(--code-font);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: none;
    outline: none;
}

textarea[readonly] {
    background-color: rgba(0,0,0,0.1);
}

/* Buttons */
.btn {
    padding: 10px 15px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
}

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

.btn-secondary {
    background-color: #333333;
    color: white;
}
.btn-secondary:hover { background-color: #444444; }

.btn-danger {
    background-color: transparent;
    color: var(--error-color);
    border: 1px solid var(--border-color);
}
.btn-danger:hover {
    background-color: rgba(244, 67, 54, 0.1);
    border-color: var(--error-color);
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    transition: color 0.2s;
}
.btn-icon:hover { color: #ffffff; }

/* Toast */
.toast {
    position: fixed;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 500;
    transition: bottom 0.3s ease;
    z-index: 1000;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.toast.show {
    bottom: 30px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 900px) {
    .split-pane {
        flex-direction: column;
    }
    .pane-actions {
        flex-direction: row;
        justify-content: center;
    }
}
@media (max-width: 600px) {
    .app-container {
        flex-direction: column;
        height: auto;
    }
    .sidebar {
        width: 100%;
        flex-direction: row;
        padding: 10px 20px;
        align-items: center;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .logo {
        padding: 0;
        margin-right: 20px;
    }
    .nav-tabs {
        flex-direction: row;
        gap: 10px;
    }
    .tab-btn {
        padding: 10px;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    .tab-btn.active {
        border-left: none;
        border-bottom-color: var(--accent-color);
    }

    .main-content {
        overflow-y: visible;
    }
}