:root {
    --primary-color: #00ff00; /* Terminal Green */
    --secondary-color: #33ff33;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #333;
    --alert-error: #ff5555;
    --alert-warning: #ffb86c;
    --alert-info: #8be9fd;
    --font-mono: "Fira Code", "Courier New", Courier, monospace;
}

body {
    font-family: var(--font-mono);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

header {
    text-align: left;
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

header h1::before {
    content: "> ";
}

header p {
    color: #888;
    font-size: 1rem;
}

.editor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

section h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

section h2::before {
    content: "[ ";
}
section h2::after {
    content: " ]";
}

textarea {
    width: 100%;
    height: 450px;
    padding: 1rem;
    background-color: var(--surface-color);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-mono);
    resize: vertical;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.markdown-output {
    background-color: #000;
    color: #f0f0f0;
    margin-bottom: 2rem;
}

button {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 0.75rem;
    margin-top: 1rem;
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover:not(:disabled) {
    background-color: rgba(0, 255, 0, 0.1);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.2);
}

button:disabled {
    border-color: #444;
    color: #444;
    cursor: not-allowed;
}

.spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0, 255, 0, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s linear infinite;
    margin-right: 12px;
}

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

button.loading .spinner {
    display: inline-block;
}

.preview {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    height: 450px;
    overflow-y: auto;
    color: #ccc;
}

.preview .placeholder {
    color: #555;
    font-style: italic;
    text-align: center;
    margin-top: 2rem;
}

.flashes {
    margin-bottom: 1.5rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.alert.error { background-color: rgba(255, 85, 85, 0.1); color: var(--alert-error); border: 1px solid var(--alert-error); }
.alert.warning { background-color: rgba(255, 184, 108, 0.1); color: var(--alert-warning); border: 1px solid var(--alert-warning); }
.alert.info { background-color: rgba(139, 233, 253, 0.1); color: var(--alert-info); border: 1px solid var(--alert-info); }

/* Markdown Preview Styles */
.preview h1, .preview h2, .preview h3 { color: var(--primary-color); border-bottom: none; padding-bottom: 0; }
.preview h1 { font-size: 1.4rem; }
.preview h2 { font-size: 1.2rem; }
.preview blockquote { border-left: 2px solid var(--primary-color); padding-left: 1rem; color: #888; font-style: italic; margin-left: 0; }
.preview pre { background-color: #000; padding: 1rem; border-radius: 4px; border: 1px solid #333; overflow-x: auto; }
.preview code { font-family: var(--font-mono); background-color: #222; padding: 0.2rem 0.4rem; border-radius: 3px; color: #ff79c6; }

@media (max-width: 992px) {
    .editor-grid {
        grid-template-columns: 1fr;
    }
}