:root {
    --bg: #0f172a;
    --card: #111827;
    --card-soft: #1f2937;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #38bdf8;
    --danger: #ef4444;
    --success: #10b981;
    --border: #374151;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Inter", Tahoma, Geneva, Verdana, sans-serif;
    background: radial-gradient(circle at top, #1e293b, var(--bg));
    color: var(--text);
}

.container {
    width: min(1000px, 92%);
    margin: 0 auto;
}

.site-header {
    border-bottom: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.brand {
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 14px;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: 8px;
}

.nav-links a:hover {
    color: var(--text);
    background: #1e293b;
}

.page-content {
    padding: 28px 0 44px;
}

.hero-card,
.card,
.auth-card,
.post-card {
    background: linear-gradient(160deg, var(--card), var(--card-soft));
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.hero-card {
    margin-bottom: 20px;
}

.hero-card h1,
.auth-card h1,
.card h1 {
    margin-top: 0;
}

.search-bar {
    margin-top: 14px;
    display: flex;
    gap: 10px;
}

input,
button {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.95rem;
}

input {
    background: #0b1220;
    color: var(--text);
    flex: 1;
}

button {
    background: var(--accent);
    color: #062534;
    font-weight: 700;
    cursor: pointer;
}

button:hover {
    filter: brightness(1.05);
}

.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}

.post-card h2 {
    margin-top: 0;
    font-size: 1.05rem;
}

.post-card p {
    color: var(--muted);
    line-height: 1.5;
}

.auth-card,
.profile-card {
    max-width: 540px;
    margin: 0 auto;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-form label {
    color: var(--muted);
    font-size: 0.92rem;
}

.message {
    border-radius: 10px;
    padding: 10px 12px;
    margin: 8px 0 14px;
}

.message.error {
    border: 1px solid rgba(239, 68, 68, 0.4);
    background: rgba(239, 68, 68, 0.12);
}

.message.success {
    border: 1px solid rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.14);
}

.message.block p {
    margin: 6px 0;
}

.error-card p {
    margin: 7px 0;
    color: #fecaca;
}

.profile-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    margin-bottom: 16px;
}

.profile-grid h3 {
    margin: 6px 0 4px;
    color: var(--muted);
    font-size: 0.9rem;
}

.profile-grid p {
    margin: 0;
}

.token {
    word-break: break-all;
    font-family: Consolas, Monaco, monospace;
    color: #bae6fd;
}

@media (max-width: 680px) {
    .search-bar {
        flex-direction: column;
    }
}