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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.landing-container {
    width: 100%;
    max-width: 440px;
}

.landing-card {
    background: white;
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.landing-logo {
    text-align: center;
    margin-bottom: 36px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 16px;
    margin-bottom: 16px;
}

.landing-logo h1 {
    font-size: 1.6rem;
    color: #1a1a2e;
    font-weight: 700;
    margin-bottom: 4px;
}

.landing-subtitle {
    color: #6b7280;
    font-size: 0.9rem;
}

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

.landing-form label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
}

.landing-form input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1.1rem;
    letter-spacing: 1px;
    font-weight: 600;
    color: #1a1a2e;
    transition: border-color 0.2s;
    text-align: center;
}

.landing-form input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.landing-form input::placeholder {
    font-weight: 400;
    color: #9ca3af;
    letter-spacing: 0;
    text-transform: none;
}

.landing-form button {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    margin-top: 4px;
}

.landing-form button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.landing-form button:active {
    transform: translateY(0);
}

.landing-error {
    background: #fef2f2;
    color: #dc2626;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    border: 1px solid #fecaca;
}

.landing-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #f3f4f6;
}

.landing-footer p {
    color: #9ca3af;
    font-size: 0.8rem;
}

@media (max-width: 480px) {
    .landing-card {
        padding: 32px 24px;
    }
}