:root {
    --bg: #0f172a;
    --card: #111827;
    --accent: #3b82f6;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --error: #f87171;
}

* {
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    margin: 0;
    background: radial-gradient(circle at 20% 20%, rgba(59,130,246,0.08), transparent 25%),
                radial-gradient(circle at 80% 0%, rgba(56,189,248,0.08), transparent 25%),
                var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--card);
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.05);
}

.logo h1 {
    margin: 0 0 4px;
    font-size: 26px;
    letter-spacing: -0.5px;
}

.logo p {
    margin: 0 0 20px;
    color: var(--muted);
}

form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

label {
    font-weight: 600;
    font-size: 14px;
}

input {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.02);
    color: var(--text);
}

input:focus {
    outline: 2px solid var(--accent);
    border-color: transparent;
}

button {
    margin-top: 4px;
    padding: 12px 14px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 30px rgba(59,130,246,0.25);
}

.error {
    min-height: 18px;
    color: var(--error);
    font-size: 14px;
}

.hint {
    color: var(--muted);
    text-align: center;
    margin-top: 16px;
    font-size: 14px;
}