:root {
    --border-radius: 12px;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --container-bg: rgba(30, 30, 30, 0.8);
    --text-color: #e0e0e0;
    --accent-color: #bb86fc;
    --error-color: #cf6679;
    --input-bg: rgba(45, 45, 45, 0.9);
}

[data-theme="light"] {
    --bg-color: #f0f2f5;
    --container-bg: rgba(255, 255, 255, 0.9);
    --text-color: #1a1a1a;
    --accent-color: #6200ee;
    --error-color: #b00020;
    --input-bg: rgba(240, 240, 240, 1);
}

[data-theme="twitch"] {
    --bg-color: #0e0e10;
    --container-bg: rgba(24, 24, 27, 0.9);
    --text-color: #efeff1;
    --accent-color: #9147ff;
    --error-color: #eb0400;
    --input-bg: rgba(31, 31, 35, 1);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

.hud-container {
    width: 90%;
    max-width: 1000px;
    background: var(--container-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

h1 {
    margin: 0;
    font-size: 1.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

h1 .to {
    color: var(--accent-color);
    font-style: italic;
    text-transform: lowercase;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
}

.input-section, .output-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-weight: bold;
    font-size: 0.9rem;
    color: var(--accent-color);
}

textarea {
    width: 100%;
    height: 300px;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-color);
    padding: 1rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    resize: none;
    outline: none;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

textarea:focus {
    border-color: var(--accent-color);
}

.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    min-height: 1.2rem;
}

footer {
    display: flex;
    justify-content: center;
}

button {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

button:hover {
    background: var(--accent-color);
    color: #000;
}