:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --input-bg: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #ef4444;
    --accent-hover: #dc2626;
    --border: #334155;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border);
}

.logo-container h1 {
    font-size: 1.5rem;
    color: white;
}

.tagline {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-back {
    color: var(--text-main);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-weight: bold;
    transition: background 0.2s;
}

.btn-back:hover {
    background-color: var(--card-bg);
}

/* Form Container */
.container {
    max-width: 600px;
    margin: 3rem auto 4rem auto;
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

.instructions {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
}

.instructions h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.instructions p {
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.normal-label {
    font-weight: normal;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.help-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
    display: block;
}

input[type="text"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 0.85rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
    color: var(--text-main);
    transition: border-color 0.2s;
}

input::placeholder,
textarea::placeholder {
    color: #475569;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-group input {
    margin-top: 0.3rem;
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

button {
    width: 100%;
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 1rem;
}

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

button:disabled {
    background-color: #fca5a5;
    cursor: not-allowed;
}

#statusMessage {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
    display: none;
}

.success {
    background-color: rgba(34, 197, 94, 0.2);
    color: #4ade80;
    border: 1px solid #22c55e;
}

.error {
    background-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
    border: 1px solid #ef4444;
}