:root {
    color-scheme: light;
    --bg: #f8fafc;
    --bg-soft: #ffffff;
    --card: #ffffff;
    --text: #1e293b;
    --muted: #64748b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --accent: #16a34a;
    --accent-light: #dcfce7;
    --border: #e2e8f0;
    --error: #dc2626;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 40px rgba(37, 99, 235, 0.1);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.06), transparent 40%),
        radial-gradient(circle at bottom left, rgba(22, 163, 74, 0.06), transparent 40%),
        var(--bg);
    color: var(--text);
}

.page {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
    padding: 48px 0 32px;
}

.hero {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.logo-mark {
    width: auto;
    min-width: 72px;
    height: 72px;
    padding: 0 20px;
    margin: 0 auto 20px;
    border-radius: 20px;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent), #22c55e);
    box-shadow: 0 8px 20px rgba(22, 163, 74, 0.25);
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3rem);
    letter-spacing: -0.03em;
    color: var(--text);
}

.tagline {
    margin: 12px 0 28px;
    color: var(--muted);
    font-size: 1.05rem;
}

.proxy-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    max-width: 720px;
    margin: 0 auto;
}

.proxy-form input {
    width: 100%;
    padding: 16px 18px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    color: var(--text);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.proxy-form input::placeholder {
    color: #94a3b8;
}

.proxy-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.proxy-form button,
.back-link {
    padding: 16px 22px;
    border: none;
    border-radius: 14px;
    background: var(--primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
}

.proxy-form button:hover,
.back-link:hover {
    background: var(--primary-hover);
}

.error {
    margin-top: 18px;
    color: var(--error);
}

.quick-links {
    margin-top: 24px;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    justify-content: center;
    align-items: center;
}

.quick-links a {
    color: var(--text);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg);
    transition: border-color 0.2s, color 0.2s;
}

.quick-links a:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 28px;
}

.features article {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.features h2 {
    margin: 0 0 10px;
    font-size: 1.1rem;
    color: var(--text);
}

.features p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.footer {
    margin-top: 28px;
    text-align: center;
    color: var(--muted);
    font-size: 0.95rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.error-page .hero {
    max-width: 640px;
    margin: 80px auto 0;
}

.coming-soon .tagline {
    margin: 8px 0 0;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--primary);
}

.coming-text {
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 1.05rem;
}

@media (max-width: 800px) {
    .features {
        grid-template-columns: 1fr;
    }

    .proxy-form {
        grid-template-columns: 1fr;
    }
}