:root {
    --blue: #2563eb;
    --blue-dark: #1e40af;
    --white: #ffffff;
    --black: #000000;
    --dark: #111111;
    --panel: #151515;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #2d2d2d;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--black);
    color: var(--text);
}

header {
    padding: 1.5rem 2rem;
    background: var(--dark);
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.35);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.brand-icon img {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    display: block;
}

.brand-text h1 {
    margin: 0;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
}

.brand-text p {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.hero,
.card {
    max-width: 960px;
    margin: 3rem auto;
    padding: 0 2rem;
}

.hero-card,
.card {
    background: var(--dark);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.hero-card h2,
.card h1 {
    margin-top: 0;
    font-size: 2rem;
    color: var(--white);
}

.hero-card p,
.card p,
.feature p,
.note {
    color: var(--muted);
    line-height: 1.75;
    margin: 1rem 0;
}

.features {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
}

.feature {
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #0f172a;
}

.feature h3 {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
    color: var(--white);
}

.button-row,
.buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.button,
.link-button {
    border: none;
    border-radius: 999px;
    padding: 0.95rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.button-primary {
    background: var(--blue);
    color: var(--white);
}

.button-secondary {
    background: var(--border);
    color: var(--white);
}

input[type="text"] {
    width: 100%;
    padding: 1rem 1.15rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: #0b1120;
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

footer {
    text-align: center;
    color: var(--muted);
    padding: 2rem 1rem;
    font-size: 0.9rem;
}

.dark-bg {
    background: var(--black);
}