:root {
    --bg-primary: #121214;
    --bg-secondary: #1a1a1e;
    --text-main: #e1e1e6;
    --text-muted: #a8a8b3;
    --accent: #6c5ce7;
    --accent-hover: #5b4bc4;
    --border: #29292e;
    --success: #00b894;
    --error: #d63031;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
}

.brand {
    color: var(--text-main);
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-main);
}

.nav-highlight {
    background-color: var(--accent);
    color: #fff !important;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-highlight:hover {
    background-color: var(--accent-hover);
}

.main-content {
    flex: 1;
    max-width: 1000px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: auto;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.auth-container {
    max-width: 450px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 2.5rem;
    border-radius: 8px;
    margin: 4rem auto;
}

form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

form input[type="text"],
form input[type="email"],
form input[type="password"],
form textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    font-family: inherit;
}

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

.btn {
    background-color: var(--accent);
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

.error {
    color: var(--error);
    background-color: rgba(214, 48, 49, 0.1);
    border: 1px solid var(--error);
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

.success {
    color: var(--success);
    background-color: rgba(0, 184, 148, 0.1);
    border: 1px solid var(--success);
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

.post-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.post-card h3 a {
    color: var(--text-main);
    text-decoration: none;
}

.post-meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0.5rem 0 1rem;
}

.profile-card {
    display: flex;
    gap: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.captcha-box {
    background: var(--bg-primary);
    padding: 0.5rem;
    border: 1px dashed var(--border);
    text-align: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}